CenterPoint Energy, Inc. (CNP, NYSE)
Industry: Utilities - Regulated Electric
Annual report, fiscal year 2012


## VALUED
VISION
2012 ANNUAL REPORT



Since we became CenterPoint Energy 10 years ago, our vision has remained constant: to be recognized as America’s leading energy delivery company... and more. Additionally, our core values of integrity, accountability, initiative and respect continue to guide us. We are proud that this commitment to our vision has created value for our customers, shareholders, employees and communities.

## Electric Transmission & Distribution

Added 44,000+ customers

Completed the deployment of 2+ million smart meters

Partnered with the Department of Homeland Security and the Electric Power Research Institute to install a prototype extra-high voltage transformer

Received the Edison Electric Institute’s 2012 Emergency Assistance Award for helping restore power following major storms, including Hurricane Sandy

In 2013, customers will have the option to receive an email, text message or phone call when power is out and restored in their area

## Field Services

Acquired $273 million of gathering and processing assets in northeast Texas, giving us 100 percent ownership of Waskom Gas Processing Company

Purchased the 139-mile Amoruso gathering system, which included a 15-year agreement with Encana Oil & Gas

Began installing new volume and capacity management systems that will be placed into service by mid-2013

Continued commercial and operational optimization efforts will benefit both pipelines and field services

## Natural Gas Distribution

Added 22,000+ customers

Invested $359 million, an increase of more than 20 percent primarily for system modernization and safety-related infrastructure

On schedule to install drive-by meter reading technology across our footprint by the end of 2016

Achieved first-quartile rankings in both the Midwest and South regions in the J.D. Power and Associates annual gas utility residential customer satisfaction study

Overcame the impacts of an extremely mild winter through operating efficiencies, increased productivity and rate recovery

## ...And More

Continued to grow and expand our competitive energy services business

Acquired a group of customers in Oklahoma and expanded sales in Choice programs, which allow residential and small commercial customers to choose their natural gas supplier and pricing option

Launched TrueCost to Houston-area consumers and business owners, allowing them to compare and switch plans offered by retail electric providers

## Interstate Pipelines

Increased throughput to power generation customers by 30 percent

Started a major integration effort of our pipeline commercial operations groups and began installing state-of-the-art automation

Achieved a major pipeline integrity milestone by completing the baseline assessment of pipelines located in high consequence areas, where a pipeline failure could have significant impact

Began to pursue new rates for our two major interstate pipelines to recover increases in cost of service

Continue to take leadership roles within industry organizations that help shape appropriate regulations likely to have an industry-wide impact




Value from

## A Shared
Commitment

CenterPoint Energy’s brand promise is Always There. It’s a commitment that we strive to deliver across all of our businesses and services. We’re a company built upon a strong foundation and proud history of service.



## Financial Highlights

## YEAR ENDED DECEMBER 31

<table><tr><td>IN MILLIONS OF DOLLARS, EXCEPT PER SHARE AMOUNTS</td><td>2010</td><td>2011</td><td>2012</td></tr><tr><td>REVENUES</td><td>$ 8,785</td><td>$ 8,450</td><td>$ 7,452</td></tr><tr><td>Operating Income</td><td>1,249</td><td>1,298</td><td>1,038</td></tr><tr><td>Income Before Extraordinary Item</td><td>442</td><td>770</td><td>417</td></tr><tr><td>Extraordinary Item, Net of Tax</td><td>-</td><td>587</td><td>-</td></tr><tr><td>Net Income</td><td>442</td><td>1,357</td><td>417</td></tr><tr><td>PER SHARE OF COMMON STOCK</td><td></td><td></td><td></td></tr><tr><td>Income Before Extraordinary Item, Basic</td><td>1.08</td><td>1.81</td><td>0.98</td></tr><tr><td>Income Before Extraordinary Item, Diluted</td><td>1.07</td><td>1.80</td><td>0.97</td></tr><tr><td>Net Income, Basic</td><td>1.08</td><td>3.19</td><td>0.98</td></tr><tr><td>Net Income, Diluted</td><td>1.07</td><td>3.17</td><td>0.97</td></tr><tr><td>Book Value - Year End</td><td>7.53</td><td>9.91</td><td>10.09</td></tr><tr><td>Share Value - Year End</td><td>15.72</td><td>20.09</td><td>19.25</td></tr><tr><td>Common Dividend Declared</td><td>0.78</td><td>0.79</td><td>0.81</td></tr><tr><td>CAPITALIZATION</td><td></td><td></td><td></td></tr><tr><td>Transition and System Restoration Bonds (includes current portion)</td><td>2,805</td><td>2,522</td><td>3,847</td></tr><tr><td>Other Long-term Debt (includes current portion)</td><td>6,624</td><td>6,603</td><td>5,910</td></tr><tr><td>Common Stock Equity</td><td>3,198</td><td>4,222</td><td>4,301</td></tr><tr><td>Total Capitalization (includes current portion)</td><td>12,627</td><td>13,347</td><td>14,058</td></tr><tr><td>Total Assets</td><td>20,111</td><td>21,703</td><td>22,871</td></tr><tr><td>Capital Expenditures</td><td>$ 1,462</td><td>$ 1,191</td><td>$ 1,188</td></tr><tr><td>Common Stock Outstanding (in thousands)</td><td>424,746</td><td>426,030</td><td>427,600</td></tr><tr><td>Number of Common Shareholders (in actual numbers)</td><td>43,587</td><td>41,141</td><td>39,366</td></tr><tr><td>Number of Employees (in actual numbers)</td><td>8,843</td><td>8,827</td><td>8,720</td></tr></table>

## Stock Performance

## FIVE-YEAR CUMULATIVE TOTAL RETURN COMPARISON FOR THE FISCAL YEARS ENDED DECEMBER 31 \( ^{(1)(2)} \) 

CENTERPOINT ENERGY

S&P 500 INDEX

S&P 500 UTILITIES INDEX

Assumes that the value of the investment in the common stock and each index was $100 on December 31, 2007, and that all dividends were reinvested.

Historical stock performance is not necessarily indicative of future stock performance.






# Dear
Shareholder,

# 2012 marked another solid year, with each of CenterPoint Energy’s businesses delivering strong performances.

The year also marked our 10th anniversary as a stand-alone company. The past decade held many challenges. We experienced the collapse of credit markets for energy companies. Our service territory took direct strikes from hurricanes Katrina and Rita in 2005, and again in 2008 from Hurricane Ike. We saw natural gas prices fluctuate between $15.40 in December 2005 and $2 in April 2012. We navigated through the Great Recession, which slowed economic activity and energy consumption. And our electric true-up case, which we hoped could be resolved in 2004, slowly worked its way through the Texas courts before it was successfully concluded in 2011. The favorable outcome allowed us to reduce our debt and restructure our balance sheet.

We overcame these challenges by staying true to the vision, values and strategy that have defined us. As a result, your company has been one of the best performing investor-owned utilities over the past 10 years. It’s a remarkable achievement accomplished by remarkable employees.

## 2012 Overview

Led by the performance of our regulated utilities and field services business, we reported net income of $417 million for 2012. Though at first glance this number appears to compare unfavorably with our 2011 net income of $1.4 billion, both 2011 and 2012 included some significant, unusual items. In 2011, our results included net income of $811 million from our true-up case. Likewise, our 2012 results included two unusual, non-cash items: a $252 million goodwill impairment charge associated with our competitive energy services business and a $136 million pre-tax gain from our purchase of the remaining 50 percent interest in a gathering and processing joint venture. When you exclude these items, our 2012 net income would have been $581 million, compared with $546 million in 2011.
In January 2012, we raised our quarterly dividend from 19.75 cents per share to 20.25 cents per share. We raised it again in January 2013 to 20.75 cents per share, making this the eighth consecutive year of dividend increases. Nevertheless, for utility stock investors 2012 was an up and down year due to the uncertainty over the economy and the future dividend tax rate. Total shareholder return last year, which included stock price appreciation and annual dividends, was essentially flat, with a loss of less than 0.2 percent. This lagged the S&P 500 Utilities Index, which returned 1.3 percent, and the broader market, as measured by the S&P 500 Index, which returned 16.0 percent.

Overall, our shareholder returns have been outstanding. Since 2002, our cumulative total shareholder return has been 278.1 percent, compared with 182.1 percent for the S&P 500 Utilities average and 115.2 percent for the S&P 500 average.

## Business Segment Results

Our electric transmission and distribution business had a great year, nearly matching its record performance in 2011. Core operating income was $492 million, compared with $496 million in 2011. The Houston economy was strong, and we added more than 44,000 customers. Considering the full-year impact of our 2011 rate case results and the return of normal weather following record heat, we are very pleased.

Despite a mild heating season and reduced gas use, our natural gas distribution business matched its excellent 2011 results. Core operating income for the year was $226 million, identical to last year’s total. We added more than 22,000 customers, primarily in Houston and Minneapolis. Our rate design strategy remains focused on ensuring timely cost recovery to give us an opportunity to earn at or near our authorized rates of return.



An unseasonably warm winter, increased competition and low natural gas prices challenged our midstream business, which includes interstate pipelines and field services. Interstate pipelines, which also competes in markets with excess pipeline capacity, reported core operating income of $207 million, down from $248 million in 2011.

Field services, however, reported its third consecutive year of growth. Operating income totaled $214 million, compared with $189 million in 2011. We benefited from volume commitments and guaranteed returns, which helped mitigate the effects of declines in producer activity. We also completed two acquisitions totaling $362 million.

Finally, in our competitive natural gas sales and services business we saw growth in retail, commercial and industrial sales and benefited from the elimination of several unprofitable pipeline capacity agreements. Excluding the non-cash, goodwill charge described earlier, we reported $2 million in operating income, compared with $6 million a year ago.

## Value from Vision

As our long-term shareholders know, our company has been guided by a vision, strategy and set of core values that have remained unchanged since we became CenterPoint Energy. Our vision is “To be recognized as America’s leading energy delivery company... and more.” This has served to focus our efforts where our skills and expertise could add the most value. Our vision also emphasizes our intent to be a leading energy delivery company, and nothing illustrates that commitment more than our adoption of smart meters and intelligent grid technologies, which are transforming the electric business.

Our corporate strategy of “One Company, Get it Right, and Grow” helped bring our vision to life and still guides us today. The benefits of this strategy have been most evident in our natural gas distribution business. We improved our business model by bringing together three separate organizations into a single integrated group. Working with our regulators, we’ve also made tremendous progress in getting it right by putting into place innovative rate structures that separate the recovery of fixed operating costs from the effects of weather and the volume of natural gas consumed. These efforts, combined with customer growth, have positioned us for success.

## Values in Action

Most importantly, we remain committed to our core values and the ethical culture we have created. Guided by our principles of integrity, accountability, initiative and respect – for one another, our customers, our shareholders and for the communities we serve – we believe we have created a very special company.
Our responses to the hurricanes that struck our service territory demonstrate our company at its best. These storms inflicted severe damage on our communities and on our systems, but in each case, our employees rose to the challenge.



Their skills and dedication have not gone unnoticed. When disaster strikes, our employees are among the first to be called upon by other utilities from as far away as California and New Jersey. Over the past 10 years, we’ve received the Edison Electric Institute Emergency Assistance Award four times.

But our employees’ spirit of service is best demonstrated through community involvement. In 2012, our employees, their family members and retirees contributed more than 240,000 hours of volunteer time. Put simply, service is deeply ingrained in our culture.

## Looking Ahead

We’re looking forward to the opportunities the next decade will bring. Houston continues to be one of the fastest growing areas in the country. Both our electric and natural gas distribution utilities will be investing heavily to meet this need, and we expect to see rate base growth of approximately 5 percent for our electric operations and 7 percent in our natural gas business.

For our midstream business, the increased availability of natural gas and liquids from existing and newly developed fields presents significant growth opportunities. In particular, newer fields, especially in North Dakota, Oklahoma, Louisiana and Texas, offer opportunities to expand our field services footprint.

Finally, no company can promise that it is invulnerable. We must acknowledge the threat to critical energy infrastructure by cyber-attack or other sabotage. All of us at CenterPoint Energy take our responsibility to safeguard our assets very seriously, and we are involved in industry and government efforts to improve security.

When we first became CenterPoint Energy, we said we were building a company committed to providing a competitive dividend with growth. We said we would focus on domestic energy delivery with a balanced portfolio of electric and natural gas, regulated and competitive assets. Ten years later, we’re proud to say we are that kind of company.

Thank you for your continued confidence and investment in CenterPoint Energy.





MILTON CARROLL
Chairman

DAVID M. McCLANAHAN
President & CEO



## The Value of a Consistent Strategy

Scott M. Prochazka,
Executive Vice President and
Chief Operating Officer



Our businesses performed well in 2012, despite facing a number of challenges. I speak primarily of the continued downward pressure on natural gas prices, the warm winter across our gas operations' footprint and a return to normal weather in our electric service territory following record-breaking heat and drought in 2011. Working hard to offset these obstacles demonstrates the ongoing commitment of our employees. And no matter what, we remain committed to providing superior service to our customers.

Operational performance was exceptional throughout the year in all of our business units. For example, electric operations surpassed the reliability goal set by the state utility commission, despite an unprecedented number of outage events due to drought-stricken trees falling into our lines. In our midstream business, the implementation of new communication software has vastly improved our ability to balance the capacity in our system.

I’m especially proud of our safety accomplishments in 2012. Electric operations recorded its safest year in history in terms of its three core safety metrics. We also achieved company bests in two out of three safety goals in our natural gas business, while meeting the target on the third measurement. In 2011, our midstream business’ safety performance was better than the industry average, and in 2012 we had nearly a 50 percent improvement in recordable incidents over the previous year. Safety will always be the most important part of our job.
“One of our key goals for 2013 is to enhance the relationship we have with customers and give them the best possible experience each time they interact with us.”

Several strategic investments in our energy delivery infrastructure were also key to our success. Significant acquisitions by our midstream group expanded our gathering footprint and substantially added to our processing capacity. We continue to seek new opportunities in a number of liquids-rich areas both within and outside our traditional footprint.

One of our key goals for 2013 is to enhance the relationship we have with customers and give them the best possible experience each time they interact with us. This initiative touches several areas of the company and will be critical to how we conduct business going forward. Although we’ve done a good job of providing the services customers expect, we know those expectations are growing. Whether it’s a phone call, an email or a visit to our website, we want customers to get the help they need with ease and convenience.

But our vision of service goes beyond responding to customers' calls; when appropriate, we want to proactively reach out to customers. For example, in 2013, we'll roll out a service that gives customers the option to receive notification when their power is out and later when it is restored, and they'll be able to choose how they want to be notified: by phone call, text message or email.

Our accomplishments are possible only because of our talented and committed employees. I want to thank them for their dedication and “can do” attitude that provides the foundation for our success.



## Value from Innovation



Technology has given us many opportunities to better serve our customers and increase the efficiencies of our operations. From smart meters to pipeline capacity modeling systems, our strategic investments in state-of-the-art advancements across our businesses have provided measurable results.

Today we’re responding to power outages faster, reading natural gas meters more efficiently and accurately and receiving near real-time reports on pipeline availability. Innovating our energy delivery infrastructure and offering new tools and services to customers continues to position us as one of the country’s leading energy companies.

The intelligent grid will automatically route power around an outage, minimizing the number of customers affected.



## Value from
Disciplined
Growth



Expanding on the Experience of Success

We have taken a disciplined approach to evaluating and pursuing opportunities presented by today's technology and market environment. Building on a strong foundation, we are well positioned for success through organic growth, acquisitions and new product and service offerings.

We have added to our portfolio of natural gas gathering assets by investing in projects in or near our footprint. With financial strength, expertise, the right assets and a focus on customer service, we will continue to pursue strategic opportunities.



## Value from Being
Always There

## Answering the Call to Serve

At the heart of our company’s culture is a dedication to service. Our employees take pride in being always there, keeping the lights on and the natural gas flowing.

We are also dedicated to our communities. Our employees are making a difference by volunteering their time to education, neighborhood improvements and other worthy projects. They also donate thousands of dollars every year to charities and other local causes.

Ready to come to the aid of fellow utilities following natural disasters, such as hurricanes and ice storms, we also serve others in their time of need.



## Value & Vision for Tomorrow

## Delivering More Possibilities

As a leading energy delivery company, we are committed to providing smart, long-lasting solutions for our customers. By building an intelligent grid and implementing our strategy to improve the experience of our customers, we are making meaningful advancements to serve generations to come.

Now more than ever, businesses and consumers turn to us as a reliable source for energy management guidance. By investing in our delivery infrastructure and cutting-edge technology, we believe we are strongly positioned for success.



# Electric Transmission & Distribution

A slight decrease in operating income was driven by a return to more normal weather following record heat and rate case results the previous year. Operating income for our electric transmission and distribution business was $639 million, consisting of $492 million from the electric utility and $147 million related to transition and system restoration bonds. In 2011, operating income for the electric utility was $623 million, consisting of $496 million from the electric utility and $127 million related to transition and system restoration bonds. The steady growth pattern continued with the addition of more than 44,000 customers.

## Value from Technology

Last summer, we completed the deployment of more than 2 million smart meters throughout our Houston-area service territory, making CenterPoint Energy one of the first large American utilities to complete its advanced metering system. Smart meters have allowed us to automate millions of service orders and monthly meter readings, vastly reducing field visits and the related vehicle carbon emissions.

Smart meters also enabled us to enhance customer service by offering same-day service for move-ins and move-outs, as well as one-hour reconnection service, 24 hours a day. The system allows retail electric providers to offer new products and services in the Texas competitive retail market, such as prepaid electric service and time-of-use rates. In 2013, we will give customers the option to receive an email, text message or phone call when power is out in their area and once it has been restored.
We continued to modernize our electric infrastructure and expect to deploy intelligent grid technology to 12 percent of our service territory in 2014. In conjunction with smart meters, the intelligent grid will more accurately identify outage locations and improve service restoration. In areas where automation is in place, we have seen a significant decrease in overall outage duration. We are installing these devices in new construction and plan to complete the entire service territory over the next decade.

## Industry-leading Vision

We took an industry leadership role by participating with the Department of Homeland Security and the Electric Power Research Institute to install a prototype extra-high voltage transformer. A typical substation transformer of this type takes 12–24 months to replace, but the prototype was transported and operational in only five days. We also received the Edison Electric Institute’s 2012 Emergency Assistance Award for helping fellow utilities restore power following major storms, including Hurricane Sandy.



## Q&A

Tracy Bridge, Senior Vice President and Division President, Electric Operations

Q What is the vision for the intelligent grid, and how will it improve service reliability?

A When fully deployed, the intelligent grid will help us better manage our electric infrastructure and improve reliability. In the event of a power outage, our state-of-the-art distribution management system will be capable of automatically rerouting power so that the least number of customers are impacted. The grid’s ability to better pinpoint trouble will also allow our field crews to proceed directly to the affected area without the need to search for the trouble spot.

Q How do customers benefit from smart technologies?

A With the deployment of smart meters completed in 2012, customers can better monitor and manage electric use. Because we can now complete routine service orders remotely, consumers can relocate or switch retail electric providers more quickly. Since mid-2009, more than 5 million service orders have been automated, and today a typical order is completed in less than 30 minutes. And retail electric providers can offer new products such as pre-paid service, time-of-use rates or energy analysis tools.

Q Are any new capital projects planned to address future growth?

A In 2012, we invested $599 million in capital projects, and we plan to invest $720 million in 2013. We are forecasting an increase in capital projects for distribution, substation and transmission upgrades. The greater Houston area continues to be a thriving economic center with customer growth projected at nearly 2 percent per year.



# Natural Gas Distribution

Our natural gas distribution business turned in a solid year in 2012, despite lower natural gas usage due to a warmer-than-usual winter. Execution of our rate strategy, increased operational efficiencies and reduced bad debt all contributed to our success. As a result, operating income was $226 million, equal to 2011. We also added more than 22,000 customers, primarily in the Houston and Minneapolis areas.

Last year, we raised our rates by $18 million, the majority through annual rate adjustments, including regulatory approval for a $6.2 million annual base rate increase in our East Texas/Beaumont jurisdiction in the fourth quarter.

Low natural gas prices, reduced usage and consistent disconnection practices contributed to decreasing our bad debt expense by $7 million.

## Value from Investments

Capital investments totaled $359 million, an increase of more than 20 percent from the previous year. The majority of this increase was spent on system modernization and safety-related infrastructure, such as replacing cast iron and bare steel pipe.

We made significant progress in the deployment of our drive-by meter reading technology, completing more than 1 million installations in Houston and South Texas. This technology not only enhances customer satisfaction by eliminating the need to enter yards to obtain monthly readings, it also improves the productivity of our meter readers by allowing a single employee in a vehicle to read up to 10,000 meters per day. To improve productivity and more efficiently serve our six-state territory, we opened a 122,000 square-foot facility in Houston. This new building combines operations from three leased facilities and includes space for training, warehousing and other aspects of our business.

## Customer Service Vision

We remain committed to enhancing our customer self-service experience. In addition to our online service appointment scheduled and other self-service tools, we introduced email and text message reminders for bill due dates.

We also continued to provide energy usage advice and conservation improvement program rebates in Arkansas, Minnesota and Oklahoma. These types of efforts helped us achieve first-quartile rankings in both the Midwest and South regions in the J.D. Power and Associates annual gas utility residential customer satisfaction study.



## Q&A

Joe McGoldrick, Senior Vice President and Division President, Gas Operations

Q Why is it important to improve the customer experience?

A Emerging technologies and higher customer expectations have changed our view of customer service, and we are investing in customer service technologies. These include enhanced self-service options for our website and phone system as well as our new option of automated calls to customers when service technicians are en route to the home.

Q What is the company doing to ensure its natural gas infrastructure is safe and reliable?
A Safety and reliability are both priorities. We continuously modernize our system by replacing segments of pipe. We spend millions of dollars annually to protect our pipelines from corrosion and perform leak surveys. To help the public identify the presence of a leak, we odorize the natural gas in our pipelines. And we have a comprehensive public awareness program for customers who live near pipelines as well as emergency responders, public officials and excavators. Our program exceeds the federal public awareness requirements.

Q Explain your rate strategy and its success.

A We have been successful at implementing innovative rate designs that separate revenues from gas usage and recover much of our incremental capital investment through annual adjustments, allowing us to earn our authorized rate of return. These steps are consistent with our strategy to move to more transparent and predictable regulatory methods that rely on accounting and auditing-based rate processes. This promotes efficient regulation by reducing the frequency of rate cases and associated expenses that are passed on to consumers.



# Interstate Pipelines & Field Services

Our midstream business was challenged by a mild winter, lower natural gas prices, an oversupply of pipeline capacity and increased competition, yet posted solid results. We completed two strategic transactions, increased our capabilities and more efficiently managed operations.

## Interstate Pipelines

For the year, operating income was $207 million, down from $248 million in 2011. Equity income from our 50 percent interest in the Southeast Supply Header totaled $26 million, up from $21 million.

We continue to execute our long-term strategy of securing power generation business. Last year, throughput to our generation customers increased 30 percent to more than 101 billion cubic feet.

## Value from Integrating

We began a major integration effort that will consolidate our pipeline commercial operations groups. This investment will allow us to serve customers more effectively and optimize our assets, giving us the flexibility to adapt quickly to changes in the industry and regulatory environment. State-of-the-art automation will provide our employees and customers with greater access to near real-time operational data, such as pipeline flows and available capacity. This will improve our ability to identify and take advantage of new service opportunities that will drive growth. We expect to complete the integration in the third quarter of 2013.
By completing the baseline assessment of our pipelines located in high consequence areas, we achieved a major safety milestone. These are areas where a natural gas pipeline failure could have significant impact on public safety or the environment. The 10-year project included more than 400 evaluations on over 180 miles of interstate pipeline, as well as reviewing an additional 2,600 miles of pipeline in non-high consequence areas. As part of our ongoing commitment to safety, we will continue to enhance our strong pipeline integrity management program.

Our two major interstate pipelines have both begun to pursue new rates to recover increases in the cost of service and mechanisms for recovering additional expenses associated with security, safety and environmental requirements. The Mississippi River Transmission pipeline request for an increase in rates is expected to be finalized in the third quarter of 2013. CenterPoint Energy Gas Transmission (CEGT) pipeline is in pre-filing discussions with customers about a new rate structure.

We worked to shape legislation as a company and through industry organizations such as the Interstate Natural Gas Association of America. The Pipeline Safety Reauthorization Act, which was signed into law in early 2012, is critical to maintaining the safety of our nation’s natural gas pipelines and increasing public confidence in our energy infrastructure. With INGAA, we will continue to take a leadership role in helping ensure any future regulations are prudent and supportive of our industry.

## Field Services

For the third consecutive year, operating income increased in our field services business. However, well connects were down due to lower natural gas prices and decreased drilling activity in our footprint. Operating income was $214 million, compared with $189 million in 2011.

Volume commitments and guaranteed returns negotiated into our major contracts provided a boost to income. A track record of exceptional customer service has provided us with opportunities to pursue new projects.

## Value from Growth

Closing on two major transactions in north-east Texas also helped us grow in a highly competitive market and expanded our capabilities in a liquids-rich production area.

We completed a $273 million acquisition of gathering and processing assets, including a 50 percent interest in the Waskom Gas Processing Company, giving us 100 percent ownership of the business. Waskom provides customers with several natural gas transportation options, including our CEGT and Carthage-to-Perryville pipelines. Also, the rail loading facility gives customers increased access to premium natural gas liquids markets. This acquisition positions us as a primary operator of key processing assets in the region.




The company also acquired the 139-mile Amoruso gathering system in connection with a 15-year natural gas gathering agreement with Encana Oil & Gas. Amoruso establishes a long-term position for us in a prolific production basin.

By mid-2013, we will place into service new volume and capacity management systems, which will improve our operating efficiency. In addition, we are working on more optimization opportunities that will benefit both pipelines and field services.

Our commercial and operation initiatives evolve with market dynamics and customer relationships. We strive to provide best-in-market services especially as it relates to delivering projects on time and on budget. As a result of our track record, we are working to secure a number of potential projects where our customers are expanding in the Bakken, Mississippi Lime, Tuscaloosa Marine and other shale plays.
Q What is the company’s growth strategy for the midstream business?

A Our strategy is to continue to build on the reputation that we’ve established through superior customer service and tailored product offerings. In both our pipelines and field services businesses, we are actively pursuing opportunities in and around our footprint.

Our pipelines are well-positioned to capture opportunities from power generation customers. There are 22 gas-fired power plants currently attached to our system, of which more than half are under contract for firm services in excess of 800 million cubic feet per day. In addition, we continue to develop rate strategies for our two interstate pipelines.

Field services is pursuing liquids-rich opportunities within reach of our gathering and processing footprint. We are finding that the current low gas price environment is presenting opportunities to acquire producer-owned gathering systems or partner with producers as they conduct initial development.

Q How does the Waskom/Prims acquisition provide a foundation for more growth?

A We are strategically positioned as a key gathering, processing and transportation service provider in East Texas and northwest Louisiana.

We now own 100 percent of Waskom with the purchase of the 50 percent interest in the Waskom joint venture that consists of a major gathering and processing system and three smaller gathering systems. The majority of the throughput from these gathering systems is connected to the Waskom processing plant, which has access to

## Q&A

Greg Harper, Senior Vice President and Group President, Midstream Operations

extensive natural gas liquids markets in the Gulf Coast and to the mid-continent pipeline infrastructure. This acquisition positions us as an operator of key processing assets and will provide a significant boost to our commercial efforts in the area. We have already seen an increase in producer activity in the Cotton Valley field as well as other nearby formations. These are expected to enhance the inlet stream into the Waskom plant, providing opportunities for future growth.

Q What are your top priorities as chairman of INGAA, the Interstate Natural Gas Association of America?

A In response to new mandates in the reauthorization of the Pipeline Safety Act, one of my primary goals is to help shape the supporting regulations in a way that ensures pipeline safety and minimizes customer disruptions. This also accomplishes Congress’ intent while being prudent and cost effective.

We also plan to advocate for electric power market rules that are needed to facilitate gas supply and pipeline transportation contracts tailored to meet the growing use of natural gas to reliably generate electricity.

Our other key priorities are to ensure that the statutory and regulatory framework remains positive for natural gas pipelines and to promote the benefits of natural gas and the important role of natural gas pipelines.



## ...And More

## In addition to our regulated businesses, we offer a variety of competitive services to meet residential and commercial customers’ unique energy needs.

CenterPoint Energy Services completed its strategic shift from wholesale markets and long-term pipeline capacity contracts to focus on value-added services for commercial, industrial and mass market customers. These services include physical gas supply, risk management, mobile gas supply and intrastate pipeline transportation. With the acquisition of a group of customers in Oklahoma, we now serve more than 16,000 commercial and industrial customers, an increase of 34 percent over the last three years. We also increased total commercial sales of natural gas to more than 550 billion cubic feet.

We expanded our participation in mass market Choice programs, which allow residential and small commercial customers to choose their natural gas supplier and pricing option. We now serve nearly 13,000 mass market customers. Our future growth plans will target commercial and industrial markets as well as Choice programs in the central United States.

## Value through Technology

We launched new services to help consumers receive greater value and use energy more wisely. TrueCost, a free, easy-to-use shopping website for electric plans, offers Houston-area residential consumers and business owners the ability to compare and switch plans offered by retail electric providers.

We have taken a disciplined approach to evaluating and pursuing opportunities presented by today’s technology and market environment. We will continue to maintain strong customer relationships and respond to changing market trends to ensure that our businesses are ready to capitalize on new opportunities as they arise.



## Board of Directors



MILTON CARROLL



DAVID M. MCLAHANAN



DONALD R. CAMPBELL



O. HOLCOMBE CROSSWELL MICHAEL P. JOHNSON



JANIECE M. LONGCORIA



SUSAN O. RHENEY



R.A. WALKER

PETER S. WAREING



SHERMAN M. WOLFF

MILTON CARROLL, 62
Chairman of the Board,
CenterPoint Energy;
Chairman and Founder,
Instrument Products, Inc.,
an oilfield equipment
manufacturing company

DAVID M. McCLANAHAN, 63
President and Chief Executive Officer,
CenterPoint Energy
DONALD R. CAMPBELL, 72
Former Chief Financial Officer,
Sanders Morris Harris Group, Inc.,
a NASDAQ-listed regional investment
banking firm

O. HOLCOMBE CROSSWELL, 72
President, Griggs Corporation,
a real estate and investment company

MICHAEL P. JOHNSON, 65
President and Chief Executive Officer,
J&A Group, LLC,
a management and business
consulting company
JANIECE M. LONGCORIA, 60
Partner, law firm of Ogden, Gibson,
Broocks, Longoria & Hall, L.L.P.



SUSAN O. RHENEY, 53
Private investor and former
Principal with The Sterling Group,
a private financial and investment
organization

R.A. WALKER, 56
President and Chief Executive Officer,
Anadarko Petroleum Corporation
PETER S. WAREING, 61
Co-founder and Partner,
Wareing, Athon & Company,
a private equity firm



SHERMAN M. WOLFF, 72
Former Executive Vice President and
Chief Operating Officer,
Health Care Service Corporation,
a customer-owned health benefits
company



## Corporate Officers



DAVID M. McCLANAHAN



GARY L. WHITLOCK



SCOTT E. ROZZELL



THOMAS R. STANDISH



SCOTT M. PROCHAZKA



TRACY B. BRIDGE



C. GREGORY HARPER



JOSEPH B. McGOLDRICK

## Executive Committee

DAVID M. McCLANAHAN, 63
President and Chief Executive Officer

SCOTT M. PROCHAZKA, 47
Executive Vice President
and Chief Operating Officer

SCOTT E. ROZZELL, 63
Executive Vice President,
General Counsel and
Corporate Secretary

THOMAS R. STANDISH, 63
Executive Vice President
and Group President,
Corporate and Energy Services

GARY L. WHITLOCK, 63
Executive Vice President
and Chief Financial Officer

## Other Corporate
Officers

C.H. ALBRIGHT, JR., 63
Senior Vice President,
Policy and Government Affairs

CHRISTOPHER J. ARNTZEN, 42
Vice President,
Deputy General Counsel
and Assistant Corporate Secretary

JEFF W. BONHAM, 50
Vice President, Government Relations

JAMES M. DUMLER, 52
Senior Vice President,
Strategic Planning and
Business Development

WALTER L. FITZGERALD, 55
Senior Vice President and
Chief Accounting Officer

KELLY C. GAUGER, 50
Vice President, Audit Services

CAROL R. HELLIKER, 52
Senior Vice President,
Deputy General Counsel
and Chief Ethics and
Compliance Officer

KIMBERLY A. JOHNSTON, 45
Vice President, Tax

MARC KILBRIDE, 60
Vice President and Treasurer

CARLA A. KNEIPP, 41
Vice President, Investor Relations

FL OYD J. LeBLANC, 53
Vice President,
Corporate Communications

MARK C. SCHROEDER, 56
Senior Vice President
and Deputy General Counsel

C. DEAN WOODS, 61
Vice President, Human Resources

## Company Leadership

C. GREGORY HARPER, 48 \( ^{*} \) 
Senior Vice President
and Group President,
Midstream Operations

WALTER L. FERGUSON, 57
Division Senior Vice President,
Midstream Field Operations,
Engineering and Construction

DAVID R. JEWELL, 60
Division Senior Vice President,
Midstream Capacity Operations,
Optimization and Gas Systems

PETER M. KIRSCH, 49
Division Senior Vice President,
Midstream Technical and
Compliance Services
WILLIAM H. MAY, JR., 55
Division Senior Vice President and
Chief Commercial Officer,
Field Services

R. POE REED, 57
Division Senior Vice President and
Chief Commercial Officer, Pipelines

TRACY B. BRIDGE, 54 \( ^{*} \) 
Senior Vice President
and Division President,
Electric Operations

JOHN C. HOUSTON, 62
Division Senior Vice President,
Compliance and High Voltage
Power Delivery

KENNETH M. MERCADO, 50
Division Senior Vice President,
Grid and Market Operations

JOSEPH B. McGOLDRICK, 59 \( ^{*} \) 
Senior Vice President
and Division President,
Gas Operations

RICK ZAPALAC, 59
Division Senior Vice President,
Gas Distribution Operations
and Engineering

ERIC W. SULLIVAN, 56
Division Senior Vice President,
CenterPoint Energy Services

 \( ^{*} \) CORPORATE OFFICER



# UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

Form 10-K

(Mark One)

☑ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

FOR THE FISCAL YEAR ENDED DECEMBER 31, 2012

□ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

FOR THE TRANSITION PERIOD FROM ___ TO ___

Commission File Number 1-31447

CenterPoint Energy, Inc.

(Exact name of registrant as specified in its charter)

Texas

(State or other jurisdiction of incorporation or organization)

74-0694415

(I.R.S. Employer Identification No.)

1111 Louisiana

Houston, Texas 77002

(Address and zip code of principal executive offices)

(713) 207-1111

(Registrant's telephone number, including area code)

Securities registered pursuant to Section 12(b) of the Act:

Title of each class

Common Stock, $0.01 par value

Name of each exchange on which registered

New York Stock Exchange
Chicago Stock Exchange

Securities registered pursuant to Section 12(g) of the Act:

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes ☑ No ☐

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. Yes ☐ No ☑

Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ☑ No ☐

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). Yes ☑ No ☐

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein and will not be contained, to the best of the registrant's knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K. ☑

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See definitions of “large accelerated filer”, “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act. (Check one):

Large accelerated filer ☑

Accelerated filer ☐

Non-accelerated filer ☐

Smaller reporting company ☐

(Do not check if a smaller reporting company)

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ☐ No ☑

The aggregate market value of the voting stock held by non-affiliates of CenterPoint Energy, Inc. (CenterPoint Energy) was $8,760,880,387 as of June 30, 2012, using the definition of beneficial ownership contained in Rule 13d-3 promulgated pursuant to the Securities Exchange Act of 1934 and excluding shares held by directors and executive officers. As of February 14, 2013, CenterPoint Energy had 427,671,739 shares of Common Stock outstanding. Excluded from the number of shares of Common Stock outstanding are 166 shares held by CenterPoint Energy as treasury stock.

## DOCUMENTS INCORPORATED BY REFERENCE

Portions of the definitive proxy statement relating to the 2013 Annual Meeting of Shareholders of CenterPoint Energy, which will be filed with the Securities and Exchange Commission within 120 days of December 31, 2012, are incorporated by reference in Item 10, Item 11, Item 12, Item 13 and Item 14 of Part III of this Form 10-K.



THIS PAGE LEFT INTENTIONALLY BLANK



## TABLE OF CONTENTS

## PART I

Page
Item 1. Business.....1
Item 1A. Risk Factors.....17
Item 1B. Unresolved Staff Comments .....26
Item 2. Properties.....27
Item 3. Legal Proceedings .....27
Item 4. Mine Safety Disclosures.....27
PART II
Item 5. Market for Registrants' Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities .....28
Item 6. Selected Financial Data .....29
Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations.....30
Item 7A. Quantitative and Qualitative Disclosures About Market Risk .....53
Item 8. Financial Statements and Supplementary Data.....55
Item 9. Changes in and Disagreements with Accountants on Accounting and Financial Disclosure.....97
Item 9A. Controls and Procedures.....97
Item 9B. Other Information.....98
PART III
Item 10. Directors, Executive Officers and Corporate Governance.....98
Item 11. Executive Compensation.....98
Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters.....98
Item 13. Certain Relationships and Related Transactions, and Director Independence.....98
Item 14. Principal Accounting Fees and Services.....98
PART IV
Item 15. Exhibits and Financial Statement Schedules.....99



## CAUTIONARY STATEMENT REGARDING FORWARD-LOOKING INFORMATION

From time to time we make statements concerning our expectations, beliefs, plans, objectives, goals, strategies, future events or performance and underlying assumptions and other statements that are not historical facts. These statements are “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Actual results may differ materially from those expressed or implied by these statements. You can generally identify our forward-looking statements by the words “anticipate,” “believe,” “continue,” “could,” “estimate,” “expect,” “forecast,” “goal,” “intend,” “may,” “objective,” “plan,” “potential,” “predict,” “projection,” “should,” “will” or other similar words.

We have based our forward-looking statements on our management’s beliefs and assumptions based on information available to our management at the time the statements are made. We caution you that assumptions, beliefs, expectations, intentions and projections about future events may and often do vary materially from actual results. Therefore, we cannot assure you that actual results will not differ materially from those expressed or implied by our forward-looking statements.

Some of the factors that could cause actual results to differ from those expressed or implied by our forward-looking statements are described under “Risk Factors” in Item 1A and “Management’s Discussion and Analysis of Financial Condition and Results of Operations – Certain Factors Affecting Future Earnings” and “ – Liquidity and Capital Resources – Other Factors That Could Affect Cash Requirements” in Item 7 of this report, which discussions are incorporated herein by reference.

You should not place undue reliance on forward-looking statements. Each forward-looking statement speaks only as of the date of the particular statement, and we undertake no obligation to update or revise any forward-looking statements.



# PART I

## Item 1. Business

## OUR BUSINESS

## Overview

We are a public utility holding company whose indirect wholly owned subsidiaries include:

- CenterPoint Energy Houston Electric, LLC (CenterPoint Houston), which engages in the electric transmission and distribution business in a 5,000-square mile area of the Texas Gulf Coast that includes the city of Houston; and

- CenterPoint Energy Resources Corp. (CERC Corp. and, together with its subsidiaries, CERC), which owns and operates natural gas distribution systems in six states. Subsidiaries of CERC Corp. own interstate natural gas pipelines and gas gathering systems and provide various ancillary services. A wholly owned subsidiary of CERC Corp. offers variable and fixed-price physical natural gas supplies primarily to commercial and industrial customers and electric and gas utilities.

Our reportable business segments are Electric Transmission & Distribution, Natural Gas Distribution, Competitive Natural Gas Sales and Services, Interstate Pipelines, Field Services and Other Operations. From time to time, we consider the acquisition or the disposition of assets or businesses.

Our principal executive offices are located at 1111 Louisiana, Houston, Texas 77002 (telephone number: 713-207-1111).

We make available free of charge on our Internet website our annual report on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K and amendments to those reports filed or furnished pursuant to Section 13(a) or 15(d) of the Securities Exchange Act of 1934 as soon as reasonably practicable after we electronically file such reports with, or furnish them to, the Securities and Exchange Commission (SEC). Additionally, we make available free of charge on our Internet website:

• our Code of Ethics for our Chief Executive Officer and Senior Financial Officers;

• our Ethics and Compliance Code;

• our Corporate Governance Guidelines; and

• the charters of the audit, compensation, finance and governance committees of our Board of Directors.

Any shareholder who so requests may obtain a printed copy of any of these documents from us. Changes in or waivers of our Code of Ethics for our Chief Executive Officer and Senior Financial Officers and waivers of our Ethics and Compliance Code for directors or executive officers will be posted on our Internet website within five business days of such change or waiver and maintained for at least 12 months or reported on Item 5.05 of Form 8-K. Our website address is www.centerpointenergy.com. Except to the extent explicitly stated herein, documents and information on our website are not incorporated by reference herein.

## Electric Transmission & Distribution

CenterPoint Houston is a transmission and distribution electric utility that operates wholly within the state of Texas. Neither CenterPoint Houston nor any other subsidiary of CenterPoint Energy makes retail or wholesale sales of electric energy or owns or operates any electric generating facilities.

## Electric Transmission

On behalf of retail electric providers (REPs), CenterPoint Houston delivers electricity from power plants to substations, from one substation to another and to retail electric customers taking power at or above 69 kilovolts (kV) in locations throughout CenterPoint Houston's certificated service territory. CenterPoint Houston constructs and maintains transmission facilities and provides transmission services under tariffs approved by the Public Utility Commission of Texas (Texas Utility Commission).



In the Electric Reliability Council of Texas, Inc. (ERCOT), end users purchase their electricity directly from certificated REPs. CenterPoint Houston delivers electricity for REPs in its certificated service area by carrying lower-voltage power from the substation to the retail electric customer. CenterPoint Houston's distribution network receives electricity from the transmission grid through power distribution substations and delivers electricity to end users through distribution feeders. CenterPoint Houston's operations include construction and maintenance of distribution facilities, metering services, outage response services and call center operations. CenterPoint Houston provides distribution services under tariffs approved by the Texas Utility Commission. Texas Utility Commission rules and market protocols govern the commercial operations of distribution companies and other market participants. Rates for these existing services are established pursuant to rate proceedings conducted before municipalities that have original jurisdiction and the Texas Utility Commission.

## ERCOT Market Framework

CenterPoint Houston is a member of ERCOT. Within ERCOT, prices for wholesale generation and retail electric sales are unregulated, but services provided by transmission and distribution companies, such as CenterPoint Houston, are regulated by the Texas Utility Commission. ERCOT serves as the regional reliability coordinating council for member electric power systems in most of Texas. ERCOT membership is open to consumer groups, investor and municipally-owned electric utilities, rural electric cooperatives, independent generators, power marketers, river authorities and REPs. The ERCOT market includes most of the State of Texas, other than a portion of the panhandle, portions of the eastern part of the state bordering Arkansas and Louisiana and the area in and around El Paso. The ERCOT market represents approximately 85% of the demand for power in Texas and is one of the nation's largest power markets. The ERCOT market included available generating capacity of approximately 74,000 megawatts (MW) at December 31, 2012. Currently, there are only limited direct current interconnections between the ERCOT market and other power markets in the United States and Mexico.

The ERCOT market operates under the reliability standards set by the North American Electric Reliability Corporation (NERC) and approved by the Federal Energy Regulatory Commission (FERC). These reliability standards are administered by the Texas Regional Entity (TRE), a functionally independent division of ERCOT. The Texas Utility Commission has primary jurisdiction over the ERCOT market to ensure the adequacy and reliability of electricity supply across the state's main interconnected power transmission grid. The ERCOT independent system operator (ERCOT ISO) is responsible for operating the bulk electric power supply system in the ERCOT market. Its responsibilities include ensuring that electricity production and delivery are accurately accounted for among the generation resources and wholesale buyers and sellers. Unlike certain other regional power markets, the ERCOT market is not a centrally dispatched power pool, and the ERCOT ISO does not procure energy on behalf of its members other than to maintain the reliable operations of the transmission system. Members who sell and purchase power are responsible for contracting sales and purchases of power bilaterally. The ERCOT ISO also serves as agent for procuring ancillary services for those members who elect not to provide their own ancillary services.

CenterPoint Houston’s electric transmission business, along with those of other owners of transmission facilities in Texas, supports the operation of the ERCOT ISO. The transmission business has planning, design, construction, operation and maintenance responsibility for the portion of the transmission grid and for the load-serving substations it owns, primarily within its certificated area. CenterPoint Houston participates with the ERCOT ISO and other ERCOT utilities to plan, design, obtain regulatory approval for and construct new transmission lines necessary to increase bulk power transfer capability and to remove existing constraints on the ERCOT transmission grid.

## Resolution of True-Up Appeal

In 1999, the Texas legislature adopted the Texas Electric Choice Plan (Texas electric restructuring law) that led to the restructuring of certain integrated electric utilities operating within Texas. Pursuant to that legislation, integrated electric utilities operating within ERCOT were required to unbundle their integrated operations into separate retail sales, power generation and transmission and distribution companies. The legislation provided for a transition period to move to the new market structure and provided a true-up mechanism for the formerly integrated electric utilities to recover stranded and certain other costs resulting from the transition to competition. Those costs were recoverable after approval by the Texas Utility Commission either through the issuance of securitization bonds or through the implementation of a competition transition charge (CTC) as a rider to the utility's tariff.

CenterPoint Houston's integrated utility business was restructured in accordance with the Texas electric restructuring law and its generating stations were sold to third parties. In March 2004, CenterPoint Houston filed a true-up application with the Texas Utility Commission, requesting recovery of associated costs of $3.7 billion, excluding interest, as allowed under the Texas electric restructuring law. In December 2004, the Texas Utility Commission issued its final order (True-Up Order) allowing CenterPoint



Houston to recover a true-up balance of approximately $2.3 billion, which included interest through August 31, 2004, and provided for adjustment of the amount to be recovered to include interest on the balance until recovery, along with the principal portion of additional excess mitigation credits returned to customers after August 31, 2004 and certain other adjustments. To reflect the impact of the True-Up Order, in 2004 and 2005, CenterPoint Energy recorded a net after-tax extraordinary loss of $947 million.

Various parties, including CenterPoint Houston, appealed the True-Up Order. These appeals were heard first by a district court in Travis County, Texas, then by the Texas Third Court of Appeals and finally by the Texas Supreme Court. In March 2011, the Texas Supreme Court issued a unanimous ruling on such appeals in which it affirmed in part and reversed in part the decision of the Texas Utility Commission. In June 2011, the Texas Supreme Court issued a final mandate remanding the case to the Texas Utility Commission for further proceedings (the Remand Proceeding).

In September 2011, CenterPoint Houston reached an agreement in principle with the staff of the Texas Utility Commission and certain intervenors to settle the issues in the Remand Proceeding (the Settlement). In October 2011, the Texas Utility Commission approved a final order (the Final Order) in the Remand Proceeding consistent with the Settlement. The Final Order provided that (i) CenterPoint Houston was entitled to recover an additional true-up balance of $1.695 billion (the Recoverable True-Up Balance) in the Remand Proceeding, (ii) no further interest would accrue on the Recoverable True-Up Balance, and (iii) CenterPoint Houston would reimburse certain parties for their reasonable rate case expenses.

In October 2011, the Texas Utility Commission also issued a financing order (the Financing Order) that authorized the issuance of transition bonds by CenterPoint Houston to securitize the Recoverable True-Up Balance. In January 2012, CenterPoint Energy Transition Bond Company IV, LLC (Bond Company IV), a new special purpose subsidiary of CenterPoint Houston, issued $1.695 billion of transition bonds in three tranches with interest rates ranging from 0.9012% to 3.0282% and final maturity dates ranging from April 15, 2018 to October 15, 2025. Through the issuance of these transition bonds, CenterPoint Houston recovered the Recoverable True-Up Balance, less approximately $10.4 million of offering expenses. The transition bonds will be repaid through a charge imposed on customers in CenterPoint Houston's service territory.

As a result of the Final Order, in 2011 CenterPoint Houston recorded a pre-tax extraordinary gain of $921 million ($587 million after-tax) and $352 million ($224 million after-tax) of Other Income related to a portion of interest on the appealed amount. An additional $405 million ($258 million after-tax) will be recorded as an equity return over the life of the transition bonds.

## Customers

CenterPoint Houston serves nearly all of the Houston/Galveston metropolitan area. At December 31, 2012, CenterPoint Houston's customers consisted of approximately 75 REPs, which sell electricity to over two million metered customers in CenterPoint Houston's certificated service area, and municipalities, electric cooperatives and other distribution companies located outside CenterPoint Houston's certificated service area. Each REP is licensed by, and must meet minimum creditworthiness criteria established by, the Texas Utility Commission.

Sales to REPs that are affiliates of NRG Energy, Inc. (NRG) represented approximately 38%, 36% and 39% of CenterPoint Houston's transmission and distribution revenues in 2010, 2011 and 2012, respectively. Sales to REPs that are affiliates of Energy Future Holdings Corp. (Energy Future Holdings) represented approximately 12%, 11% and 10% of CenterPoint Houston's transmission and distribution revenues in 2010, 2011 and 2012, respectively. CenterPoint Houston's aggregate billed receivables balance from REPs as of December 31, 2012 was $158 million. Approximately 42% and 2% of this amount was owed by affiliates of NRG and Energy Future Holdings, respectively. CenterPoint Houston does not have long-term contracts with any of its customers. It operates using a continuous billing cycle, with meter readings being conducted and invoices being distributed to REPs each business day.

## Advanced Metering System and Distribution Grid Automation (Intelligent Grid)

In December 2008, CenterPoint Houston received approval from the Texas Utility Commission to deploy an advanced metering system (AMS) across its service territory during the following five years. CenterPoint Houston began installing advanced meters in March 2009. In May 2012, CenterPoint Houston substantially completed the deployment of the advanced metering system having installed approximately 2.2 million smart meters. This technology should encourage greater energy conservation by giving Houston-area electric consumers the ability to better monitor and manage their electric use and its cost in near real time. To recover the cost of the AMS, the Texas Utility Commission approved a monthly surcharge payable by REPs, initially over 12 years. For the first 24 months, which began in February 2009, the surcharge for residential customers was $3.24 per month. Beginning in February 2011, the surcharge was reduced to $3.05 per month. In September 2011, the surcharge duration was reduced from 12 years to approximately six years for residential customers and approximately eight years for commercial customers. The surcharge



amounts, or duration are subject to adjustment in future proceedings to reflect actual costs incurred and to address required changes in scope.

CenterPoint Houston is also pursuing deployment of an electric distribution grid automation strategy that involves the implementation of an “Intelligent Grid” (IG) which would provide on-demand data and information about the status of facilities on its system. Although this technology is still in the developmental stage, CenterPoint Houston believes it has the potential to provide an improvement in grid planning, operations, maintenance and customer service for the CenterPoint Houston distribution system. These improvements are expected to result in fewer and shorter outages, better customer service, improved operations costs, improved security and more effective use of our workforce. We expect to include the costs of the deployment in future rate proceedings before the Texas Utility Commission.

In October 2009, the U.S. Department of Energy (DOE) selected CenterPoint Houston for a $200 million grant to help fund its AMS and IG projects. As of December 31, 2011, CenterPoint Houston had received substantially all of the $200 million of grant funding from the DOE. CenterPoint Houston used $150 million of the grant funding to accelerate completion of its deployment of advanced meters to 2012, instead of 2014 as originally scheduled. CenterPoint Houston estimates that capital expenditures of approximately $660 million for the installation of the advanced meters and corresponding communication and data management systems were incurred over the advanced meter deployment period. CenterPoint Houston is using the other $50 million from the grant for an initial deployment of an IG which covers approximately 12% of its service territory. This initial deployment is expected to be completed in 2014. It is expected that the capital portion of the IG project subject to partial funding by the DOE will cost approximately $140 million.

## Competition

There are no other electric transmission and distribution utilities in CenterPoint Houston's service area. In order for another provider of transmission and distribution services to provide such services in CenterPoint Houston's territory, it would be required to obtain a certificate of convenience and necessity from the Texas Utility Commission and, depending on the location of the facilities, may also be required to obtain franchises from one or more municipalities. We know of no other party intending to enter this business in CenterPoint Houston's service area at this time. Distributed generation could result in a reduction of demand for CenterPoint Houston's electric distribution services but has not been a significant factor to date.

## Seasonality

A significant portion of CenterPoint Houston's revenues is derived from rates that it collects from each REP based on the amount of electricity it delivers on behalf of such REP. Thus, CenterPoint Houston's revenues and results of operations are subject to seasonality, weather conditions and other changes in electricity usage, with revenues generally being higher during the warmer months.

## Properties

All of CenterPoint Houston's properties are located in Texas. Its properties consist primarily of high-voltage electric transmission lines and poles, distribution lines, substations, service centers, service wires and meters. Most of CenterPoint Houston's transmission and distribution lines have been constructed over lands of others pursuant to easements or along public highways and streets as permitted by law.

All real and tangible properties of CenterPoint Houston, subject to certain exclusions, are currently subject to:

• the lien of a Mortgage and Deed of Trust (the Mortgage) dated November 1, 1944, as supplemented; and

- the lien of a General Mortgage (the General Mortgage) dated October 10, 2002, as supplemented, which is junior to the lien of the Mortgage.

As of December 31, 2012, CenterPoint Houston had approximately $2.4 billion aggregate principal amount of general mortgage bonds outstanding under the General Mortgage, including (a) $290 million held in trust to secure pollution control bonds that are not reflected in our consolidated financial statements because we are both the obligor on the bonds and the current owner of the bonds, (b) approximately $118 million held in trust to secure pollution control bonds for which we are obligated and (c) approximately $183 million held in trust to secure pollution control bonds for which CenterPoint Houston is obligated. Additionally, as of December 31, 2012, CenterPoint Houston had approximately $253 million aggregate principal amount of first mortgage bonds outstanding under the Mortgage, including approximately $151 million held in trust to secure certain pollution control bonds for which we are obligated. CenterPoint Houston may issue additional general mortgage bonds on the basis of retired bonds, 70%



of property additions or cash deposited with the trustee. Approximately $2.9 billion of additional first mortgage bonds and general mortgage bonds in the aggregate could be issued on the basis of retired bonds and 70% of property additions as of December 31, 2012. However, CenterPoint Houston has contractually agreed that it will not issue additional first mortgage bonds, subject to certain exceptions.

Electric Lines - Overhead. As of December 31, 2012, CenterPoint Houston owned 28,011 pole miles of overhead distribution lines and 3,713 circuit miles of overhead transmission lines, including 373 circuit miles operated at 69,000 volts, 2,124 circuit miles operated at 138,000 volts and 1,216 circuit miles operated at 345,000 volts.

Electric Lines - Underground. As of December 31, 2012, CenterPoint Houston owned 21,151 circuit miles of underground distribution lines and 26 circuit miles of underground transmission lines, including 2 circuit miles operated at 69,000 volts and 24 circuit miles operated at 138,000 volts.

Substations. As of December 31, 2012, CenterPoint Houston owned 233 major substation sites having a total installed rated transformer capacity of 54,325 megavolt amperes.

Service Centers. CenterPoint Houston operates 14 regional service centers located on a total of 291 acres of land. These service centers consist of office buildings, warehouses and repair facilities that are used in the business of transmitting and distributing electricity.

## Franchises

CenterPoint Houston holds non-exclusive franchises from the incorporated municipalities in its service territory. In exchange for the payment of fees, these franchises give CenterPoint Houston the right to use the streets and public rights-of-way of these municipalities to construct, operate and maintain its transmission and distribution system and to use that system to conduct its electric delivery business and for other purposes that the franchises permit. The terms of the franchises, with various expiration dates, typically range from 20 to 40 years.

## Natural Gas Distribution

CERC Corp.'s natural gas distribution business (Gas Operations) engages in regulated intrastate natural gas sales to, and natural gas transportation for, approximately 3.3 million residential, commercial and industrial customers in Arkansas, Louisiana, Minnesota, Mississippi, Oklahoma and Texas. The largest metropolitan areas served in each state by Gas Operations are Houston, Texas; Minneapolis, Minnesota; Little Rock, Arkansas; Shreveport, Louisiana; Biloxi, Mississippi; and Lawton, Oklahoma. In 2012, approximately 37% of Gas Operations' total throughput was to residential customers and approximately 63% was to commercial and industrial customers.

The table below reflects the number of natural gas distribution customers by state as of December 31, 2012:

<table><tr><td></td><td>Residential</td><td>Commercial/ Industrial</td><td>Total Customers</td></tr><tr><td>Arkansas</td><td>384,640</td><td>48,405</td><td>433,045</td></tr><tr><td>Louisiana</td><td>231,566</td><td>17,191</td><td>248,757</td></tr><tr><td>Minnesota</td><td>747,266</td><td>68,067</td><td>815,333</td></tr><tr><td>Mississippi</td><td>110,245</td><td>12,587</td><td>122,832</td></tr><tr><td>Oklahoma</td><td>91,795</td><td>10,694</td><td>102,489</td></tr><tr><td>Texas</td><td>1,493,183</td><td>89,469</td><td>1,582,652</td></tr><tr><td>Total Gas Operations</td><td>3,058,695</td><td>246,413</td><td>3,305,108</td></tr></table>

Gas Operations also provides unregulated services in Minnesota consisting of heating, ventilating and air conditioning (HVAC) equipment and appliance repair, and sales of HVAC, hearth and water heating equipment.

The demand for intrastate natural gas sales to residential customers and natural gas sales and transportation for commercial and industrial customers is seasonal. In 2012, approximately 66% of the total throughput of Gas Operations' business occurred in the first and fourth quarters. These patterns reflect the higher demand for natural gas for heating purposes during those periods.

Supply and Transportation. In 2012, Gas Operations purchased virtually all of its natural gas supply pursuant to contracts with remaining terms varying from a few months to four years. Major suppliers in 2012 included BP Energy Company/BP Canada



Energy Marketing (12.2% of supply volumes), Tenaska Marketing Ventures (9.6%), Cargill, Inc. (9.5%), Kinder Morgan Tejas Pipeline/Kinder Morgan Texas Pipeline (8.8%), Shell Energy North America (6.4%), Conoco Inc. (6.2%), Macquarie Energy (5.1%), Sequent Energy Management (4%), JP Morgan (3.8%), and Oneok Energy Services (3.3%). Numerous other suppliers provided the remaining 31.1% of Gas Operations' natural gas supply requirements. Gas Operations transports its natural gas supplies through various intrastate and interstate pipelines, including those owned by our other subsidiaries, under contracts with remaining terms, including extensions, varying from one to ten years. Gas Operations anticipates that these gas supply and transportation contracts will be renewed or replaced prior to their expiration.

Gas Operations actively engages in commodity price stabilization pursuant to annual gas supply plans presented to and/or filed with each of its state regulatory authorities. These price stabilization activities include use of storage gas and contractually establishing structured prices (e.g., fixed price, costless collars and caps) with our physical gas suppliers. Its gas supply plans generally call for 50-75% of winter supplies to be stabilized in some fashion.

Generally, the regulations of the states in which Gas Operations operates allow it to pass through changes in the cost of natural gas, including savings and costs of financial derivatives associated with the index-priced physical supply, to its customers under purchased gas adjustment provisions in its tariffs. Depending upon the jurisdiction, the purchased gas adjustment factors are updated periodically, ranging from monthly to semi-annually. The changes in the cost of gas billed to customers are subject to review by the applicable regulatory bodies.

Gas Operations uses various third-party storage services or owned natural gas storage facilities to meet peak-day requirements and to manage the daily changes in demand due to changes in weather and may also supplement contracted supplies and storage from time to time with stored liquefied natural gas and propane-air plant production.

Gas Operations owns and operates an underground natural gas storage facility with a capacity of 7.0 billion cubic feet (Bcf). It has a working capacity of 2.0 Bcf available for use during a normal heating season and a maximum daily withdrawal rate of 50 million cubic feet (MMcf). It also owns nine propane-air plants with a total production rate of 200,000 Dekatherms (DTH) per day and on-site storage facilities for 12 million gallons of propane (1.0 Bcf natural gas equivalent). It owns a liquefied natural gas plant facility with a 12 million-gallon liquefied natural gas storage tank (1.0 Bcf natural gas equivalent) and a production rate of 72,000 DTH per day.

On an ongoing basis, Gas Operations enters into contracts to provide sufficient supplies and pipeline capacity to meet its customer requirements. However, it is possible for limited service disruptions to occur from time to time due to weather conditions, transportation constraints and other events. As a result of these factors, supplies of natural gas may become unavailable from time to time, or prices may increase rapidly in response to temporary supply constraints or other factors.

Gas Operations has entered into various asset management agreements associated with its utility distribution service in Arkansas, Louisiana, Mississippi, Oklahoma and Texas. Generally, these asset management agreements are contracts between Gas Operations and an asset manager that are intended to transfer the working capital obligation and maximize the utilization of the assets. In these agreements, Gas Operations agreed to release transportation and storage capacity to other parties to manage gas storage, supply and delivery arrangements for Gas Operations and to use the released capacity for other purposes when it is not needed for Gas Operations. Gas Operations is compensated by the asset manager through payments made over the life of the agreements based in part on the results of the asset optimization. Gas Operations has received approval from the state regulatory commissions in Arkansas, Louisiana, Mississippi and Oklahoma to retain a share of the asset management agreement proceeds. The agreements have varying terms, the longest of which expires in 2016.

## Assets

As of December 31, 2012, Gas Operations owned approximately 72,000 linear miles of natural gas distribution mains, varying in size from one-half inch to 24 inches in diameter. Generally, in each of the cities, towns and rural areas served by Gas Operations, it owns the underground gas mains and service lines, metering and regulating equipment located on customers' premises and the district regulating equipment necessary for pressure maintenance. With a few exceptions, the measuring stations at which Gas Operations receives gas are owned, operated and maintained by others, and its distribution facilities begin at the outlet of the measuring equipment. These facilities, including odorizing equipment, are usually located on land owned by suppliers.



Gas Operations competes primarily with alternate energy sources such as electricity and other fuel sources. In some areas, intrastate pipelines, other gas distributors and marketers also compete directly for gas sales to end-users. In addition, as a result of federal regulations affecting interstate pipelines, natural gas marketers operating on these pipelines may be able to bypass Gas Operations' facilities and market and sell and/or transport natural gas directly to commercial and industrial customers.

## Competitive Natural Gas Sales and Services

CERC offers variable and fixed-priced physical natural gas supplies primarily to commercial and industrial customers and electric and gas utilities through CenterPoint Energy Services, Inc. (CES) and its subsidiary, CenterPoint Energy Intrastate Pipelines, LLC (CEIP).

In 2012, CES marketed approximately 562 Bcf of natural gas, related energy services and transportation to approximately 16,300 customers (including approximately 6 Bcf to affiliates) in 21 states. Not included in the 2012 customer count are approximately 12,700 natural gas customers that are served under residential and small commercial choice programs invoiced by their host utility. CES customers vary in size from small commercial customers to large utility companies in the central and eastern regions of the United States.

CES offers a variety of natural gas management services to gas utilities, large industrial customers, electric generators, smaller commercial and industrial customers, municipalities, educational institutions and hospitals. These services include load forecasting, supply acquisition, daily swing volume management, invoice consolidation, storage asset management, firm and interruptible transportation administration and forward price management. CES also offers a portfolio of physical delivery services and financial products designed to meet customers' supply and price risk management needs. These customers are served directly, through interconnects with various interstate and intrastate pipeline companies, and portably, through our mobile energy solutions business.

In addition to offering natural gas management services, CES procures and optimizes transportation and storage assets. CES currently transports natural gas on 47 interstate and intrastate pipelines within states located throughout the central and eastern United States. CES maintains a portfolio of natural gas supply contracts and firm transportation and storage agreements to meet the natural gas requirements of its customers. CES aggregates supply from various producing regions and offers contracts to buy natural gas with terms ranging from one month to over five years. In addition, CES actively participates in the spot natural gas markets in an effort to balance daily and monthly purchases and sales obligations. Natural gas supply and transportation capabilities are leveraged through contracts for ancillary services including physical storage and other balancing arrangements.

As described above, CES offers its customers a variety of load following services. In providing these services, CES uses its customers' purchase commitments to forecast and arrange its own supply purchases, storage and transportation services to serve customers' natural gas requirements. As a result of the variance between this forecast activity and the actual monthly activity, CES will either have too much supply or too little supply relative to its customers' purchase commitments. These supply imbalances arise each month as customers' natural gas requirements are scheduled and corresponding natural gas supplies are nominated by CES for delivery to those customers. CES' processes and risk control environment are designed to measure and value imbalances on a real-time basis to ensure that CES' exposure to commodity price risk is kept to a minimum. The value assigned to these imbalances is calculated daily and is known as the aggregate Value at Risk (VaR).

Our risk control policy, which is overseen by our Risk Oversight Committee, defines authorized and prohibited trading instruments and trading limits. CES is a physical marketer of natural gas and uses a variety of tools, including pipeline and storage capacity, financial instruments and physical commodity purchase contracts to support its sales. The CES business optimizes its use of these various tools to minimize its supply costs and does not engage in proprietary or speculative commodity trading. However, up to 3 Bcf of storage gas can be sold prior to purchase or purchased prior to sale for a period not to exceed 12 months. These open positions are subject to the existing VaR limits. The VaR limits within which CES operates, a $4 million maximum, are consistent with CES' operational objective of matching its aggregate sales obligations (including the swing associated with load following services) with its supply portfolio in a manner that minimizes its total cost of supply. In 2012, CES' VaR averaged $0.2 million with a high of $1.0 million.

## Assets

CEIP owns and operates approximately 233 miles of intrastate pipeline in Louisiana and Texas and contracts out approximately 2.3 Bcf of storage at its Pierce Junction facility in Texas under long-term leases. In addition, CES leases transportation capacity of approximately 0.81 Bcf per day on various interstate and intrastate pipelines and approximately 12 Bcf of storage to service its shippers and end-users.



## Competition

CES competes with regional and national wholesale and retail gas marketers, including the marketing divisions of natural gas producers and utilities. In addition, CES competes with intrastate pipelines for customers and services in its market areas.

## Interstate Pipelines

CERC's pipelines business operates interstate natural gas pipelines with gas transmission lines primarily located in Arkansas, Illinois, Louisiana, Missouri, Oklahoma and Texas. CERC's interstate pipeline operations are primarily conducted by two wholly owned subsidiaries that provide gas transportation and storage services primarily to industrial customers and local distribution companies:

- CenterPoint Energy Gas Transmission Company, LLC (CEGT) is an interstate pipeline that provides natural gas transportation, natural gas storage and pipeline services to customers principally in Arkansas, Louisiana, Oklahoma and Texas and includes the 1.9 Bcf per day pipeline from Carthage, Texas to Perryville, Louisiana, which CEGT operates as a separate line with a fixed fuel rate; and

- CenterPoint Energy-Mississippi River Transmission, LLC (MRT) is an interstate pipeline that provides natural gas transportation, natural gas storage and pipeline services to customers principally in Arkansas, Illinois and Missouri.

The rates charged by CEGT and MRT for interstate transportation and storage services are regulated by the FERC. CERC's interstate pipelines business operations may be affected by changes in the demand for natural gas, the available supply and relative price of natural gas in the Mid-continent and Gulf Coast natural gas supply regions and general economic conditions.

In 2012, approximately 18% of CEGT and MRT's total operating revenue was attributable to services provided to Gas Operations, an affiliate, and approximately 9% was attributable to services provided to Laclede Gas Company (Laclede), an unaffiliated distribution company that provides natural gas utility service to the greater St. Louis metropolitan area in Illinois and Missouri. Services to Gas Operations and Laclede are provided under several long-term firm storage and transportation agreements. The primary terms of CEGT's firm transportation and storage contracts with Gas Operations will expire in 2021. MRT's firm transportation and storage contracts with Laclede are in their evergreen period, subject to termination by either party upon one year notice.

Southeast Supply Header, LLC. CenterPoint Southeastern Pipelines Holding, LLC, a wholly owned subsidiary of CERC, owns a 50% interest in Southeast Supply Header, LLC (SESH). SESH owns a 1.0 Bcf per day, 274-mile interstate pipeline that runs from the Perryville Hub in Louisiana to Coden, Alabama. The pipeline was placed into service in the third quarter of 2008. The rates charged by SESH for interstate transportation services are regulated by the FERC. A wholly owned, indirect subsidiary of Spectra Energy Corp. owns the remaining 50% interest in SESH.

## Assets

CERC's interstate pipelines business currently owns and operates approximately 8,000 miles of natural gas transmission lines primarily located in Arkansas, Illinois, Louisiana, Missouri, Oklahoma and Texas. CERC's interstate pipeline business also owns and operates 6 natural gas storage fields with a combined daily deliverability of approximately 1.3 Bcf and a combined working gas capacity of approximately 59 Bcf. CERC's interstate pipeline business also owns a 10% interest in the Bistineau storage facility located in Bienville Parish, Louisiana, with the remaining interest owned and operated by Gulf South Pipeline Company, LP. CERC's interstate pipeline business' storage capacity in the Bistineau facility is 8 Bcf of working gas with 100 MMcf per day of deliverability. Most storage operations are in north Louisiana and Oklahoma.

## Competition

CERC's interstate pipelines business competes with other interstate and intrastate pipelines in the transportation and storage of natural gas. The principal elements of competition among pipelines are rates, terms of service, and flexibility and reliability of service. CERC's interstate pipelines business competes indirectly with other forms of energy, including electricity, coal and fuel oils. The primary competitive factor is price, but environmental considerations have grown in importance when consumers consider alternative forms of energy. Changes in the availability of energy and pipeline capacity, the level of business activity, conservation and governmental regulations, the capability to convert to alternative fuels, and other factors, including weather, affect the demand for natural gas in areas we serve and the level of competition for transportation and storage services.



## Field Services

CERC's field services business operates gas gathering, treating and processing facilities and also provides operating and technical services and remote data monitoring and communication services.

CERC's field services operations are conducted by a wholly owned subsidiary, CenterPoint Energy Field Services, LLC (CEFS), and subsidiaries of CEFS. CERC's field services business provides natural gas gathering and processing services for certain natural gas fields in the Mid-continent region of the United States that interconnect with CEGT's and MRT's pipelines, as well as other interstate and intrastate pipelines. As of the end of 2012, CERC's field services business gathered an average of approximately 2.4 Bcf per day of natural gas. In addition, CERC's field services business has the capacity available to treat up to 2.5 Bcf per day and process 625 MMcf per day of natural gas. CEFS, through its ServiceStar operating division, provides remote data monitoring and communications services to affiliates and third parties.

CERC's field services business operations may be affected by changes in the demand for natural gas and natural gas liquids (NGLs), the available supply and relative price of natural gas and NGLs in the Mid-continent and Gulf Coast natural gas supply regions and general economic conditions.

CEFS has long-term agreements with an indirect wholly owned subsidiary of Encana Corporation (Encana) and an indirect wholly owned subsidiary of Royal Dutch Shell plc (Shell) to provide gathering and treating services for their natural gas production from certain Haynesville Shale and Bossier Shale formations in Texas and Louisiana. Under the long-term agreements, Encana or Shell may elect to require CEFS to expand the capacity of its gathering systems by up to an additional 1.3 Bcf per day. CEFS estimates that the cost to expand the capacity of its gathering systems by an additional 1.3 Bcf per day would be as much as $440 million. Encana and Shell would provide incremental volume commitments in connection with an election to expand system capacity.

In May 2012, CEFS purchased the Amoruso gathering system located in east Texas and related assets from a subsidiary of Encana for approximately $89 million. In connection with this acquisition, CEFS entered into a 15-year gathering agreement with Encana to gather and treat its natural gas production from the Amoruso and Hilltop fields located in Robertson and Leon counties in east Texas. The gathering agreement includes volume commitments and an acreage dedication. As of the end of 2012, the Amoruso gathering system had nearly 200 MMcf per day of natural gas throughput primarily from the Deep Bossier and Cotton Valley Lime formations.

Waskom Gas Processing Company. Prior to July 31, 2012, CenterPoint Energy Gas Processing Company, a wholly owned, indirect subsidiary of CERC, owned a 50% general partnership interest in Waskom Gas Processing Company (Waskom), a Texas general partnership, which owns and operates a natural gas processing plant and natural gas gathering assets in east Texas. On July 31, 2012, CenterPoint Energy purchased the 50% interest that it did not already own in Waskom, as well as other gathering and related assets from a third-party for approximately $273 million. The Waskom plant is capable of processing approximately 320 MMcf per day of natural gas. The gathering assets owned by Waskom are capable of gathering approximately 75 MMcf per day of natural gas.

## Assets

CERC's field services business owns and operates approximately 4,600 miles of gathering lines and processing plants that collect, treat and process natural gas primarily from three regions located in major producing fields in Arkansas, Louisiana, Oklahoma and Texas.

## Competition

CERC's field services business competes with other companies in the natural gas gathering, treating and processing business. The principal elements of competition are rates, terms of service and reliability of services. CERC's field services business competes indirectly with alternative forms of energy, including electricity, coal and fuel oils. The primary competitive factor is price, but environmental considerations have grown in importance when consumers consider other forms of energy. Changes in the availability of energy and pipeline capacity, the level of business activity, conservation and governmental regulations, the capability to convert to alternative fuels, and other factors, including weather, affect the demand for natural gas in areas we serve and the level of competition for gathering, treating, and processing services. In addition, competition among forms of energy is affected by commodity pricing levels and influences the level of drilling activity and demand for our gathering operations.



## Other Operations

Our Other Operations business segment includes office buildings and other real estate used in our business operations and other corporate operations that support all of our business operations.

## Financial Information About Segments

For financial information about our segments, see Note 16 to our consolidated financial statements, which note is incorporated herein by reference.

## REGULATION

We are subject to regulation by various federal, state and local governmental agencies, including the regulations described below.

## Federal Energy Regulatory Commission

The FERC has jurisdiction under the Natural Gas Act and the Natural Gas Policy Act of 1978, as amended, to regulate the transportation of natural gas in interstate commerce and natural gas sales for resale in interstate commerce that are not first sales. The FERC regulates, among other things, the construction of pipeline and related facilities used in the transportation and storage of natural gas in interstate commerce, including the extension, expansion or abandonment of these facilities. The rates charged by interstate pipelines for interstate transportation and storage services are also regulated by the FERC. The FERC has authority to prohibit market manipulation in connection with FERC-regulated transactions and to impose significant civil and criminal penalties for statutory violations and violations of the FERC’s rules or orders. Our competitive natural gas sales and services subsidiary markets natural gas in interstate commerce pursuant to blanket authority granted by the FERC.

CERC's natural gas pipeline subsidiaries may periodically file applications with the FERC for changes in their generally available maximum rates and charges designed to allow them to recover their costs of providing service to customers (to the extent allowed by prevailing market conditions), including a reasonable rate of return. These rates are normally allowed to become effective after a suspension period and, in some cases, are subject to refund under applicable law until such time as the FERC issues an order on the allowable level of rates.

CenterPoint Houston is not a “public utility” under the Federal Power Act and, therefore, is not generally regulated by the FERC, although certain of its transactions are subject to limited FERC jurisdiction. The FERC has certain responsibilities with respect to ensuring the reliability of electric transmission service, including transmission facilities owned by CenterPoint Houston and other utilities within ERCOT. The FERC has designated the NERC as the Electric Reliability Organization (ERO) to promulgate standards, under FERC oversight, for all owners, operators and users of the bulk power system (Electric Entities). The ERO and the FERC have authority to (a) impose fines and other sanctions on Electric Entities that fail to comply with approved standards and (b) audit compliance with approved standards. The FERC has approved the delegation by the NERC of authority for reliability in ERCOT to the TRE. CenterPoint Houston does not anticipate that the reliability standards proposed by the NERC and approved by the FERC will have a material adverse impact on its operations. To the extent that CenterPoint Houston is required to make additional expenditures to comply with these standards, it is anticipated that CenterPoint Houston will seek to recover those costs through the transmission charges that are imposed on all distribution service providers within ERCOT for electric transmission provided.

As a public utility holding company, under the Public Utility Holding Company Act of 2005, we and our subsidiaries are subject to reporting and accounting requirements and are required to maintain certain books and records and make them available for review by the FERC and state regulatory authorities in certain circumstances.

## State and Local Regulation

## Electric Transmission & Distribution

CenterPoint Houston conducts its operations pursuant to a certificate of convenience and necessity issued by the Texas Utility Commission that covers its present service area and facilities. The Texas Utility Commission and municipalities have the authority to set the rates and terms of service provided by CenterPoint Houston under cost-of-service rate regulation. CenterPoint Houston holds non-exclusive franchises from the incorporated municipalities in its service territory. In exchange for payment of fees, these franchises give CenterPoint Houston the right to use the streets and public rights-of-way of these municipalities to construct, operate and maintain its transmission and distribution system and to use that system to conduct its electric delivery business and



for other purposes that the franchises permit. The terms of the franchises, with various expiration dates, typically range from 20 to 40 years.

CenterPoint Houston’s distribution rates charged to REPs for residential customers are primarily based on amounts of energy delivered, whereas distribution rates for a majority of commercial and industrial customers are primarily based on peak demand. All REPs in CenterPoint Houston’s service area pay the same rates and other charges for transmission and distribution services. This regulated delivery charge includes the transmission and distribution rate (which includes municipal franchise fees), a system benefit fund fee imposed by the Texas electric restructuring law, a nuclear decommissioning charge associated with decommissioning the South Texas nuclear generating facility, an energy efficiency cost recovery charge, a surcharge related to the implementation of AMS and charges associated with securitization of regulatory assets, stranded costs and restoration costs relating to Hurricane Ike. Transmission rates charged to distribution companies are based on amounts of energy transmitted under “postage stamp” rates that do not vary with the distance the energy is being transmitted. All distribution companies in ERCOT pay CenterPoint Houston the same rates and other charges for transmission services.

Resolution of True-Up Appeal. For a discussion of CenterPoint Houston’s true-up proceedings, see “— Our Business — Electric Transmission & Distribution — Resolution of True-Up Appeal” above.

Rate Proceedings. For a discussion of CenterPoint Houston’s ongoing rate proceedings, see “Management’s Discussion and Analysis of Financial Condition and Results of Operations — Liquidity and Capital Resources — Future Sources and Uses of Cash — Regulatory Matters — CenterPoint Houston” in Item 7 of this report, which discussion is incorporated herein by reference.

## Natural Gas Distribution

In almost all communities in which Gas Operations provides natural gas distribution services, it operates under franchises, certificates or licenses obtained from state and local authorities. The original terms of the franchises, with various expiration dates, typically range from 10 to 30 years, although franchises in Arkansas are perpetual. Gas Operations expects to be able to renew expiring franchises. In most cases, franchises to provide natural gas utility services are not exclusive.

Substantially all of Gas Operations is subject to cost-of-service rate regulation by the relevant state public utility commissions and, in Texas, by the Railroad Commission of Texas (Railroad Commission) and those municipalities served by Gas Operations that have retained original jurisdiction. In certain of its jurisdictions, Gas Operations has in effect annual rate adjustment mechanisms that provide for changes in rates dependent upon certain changes in invested capital, earned returns on equity or actual margins realized.

Rate Proceedings. For a discussion of Gas Operations' ongoing rate proceedings, see “Management's Discussion and Analysis of Financial Condition and Results of Operations — Liquidity and Capital Resources — Future Sources and Uses of Cash — Regulatory Matters — Gas Operations” in Item 7 of this report, which discussion is incorporated herein by reference.

## Department of Transportation

In December 2006, Congress enacted the Pipeline Inspection, Protection, Enforcement and Safety Act of 2006 (2006 Act), which reauthorized the programs adopted under the Pipeline Safety Improvement Act of 2002 (2002 Act). These programs included several requirements related to ensuring pipeline safety, and a requirement to assess the integrity of pipeline transmission facilities in areas of high population concentration. Under the 2002 Act, remediation activities are to be performed over a 10-year period. Our pipeline subsidiaries met this initial time frame for completion of the base line assessments and are currently performing reassessments as required.

Pursuant to the 2006 Act, the Pipeline and Hazardous Materials Safety Administration (PHMSA) at the Department of Transportation (DOT) issued regulations, effective February 12, 2010, requiring operators of gas distribution pipelines to develop and implement integrity management programs similar to those required for gas transmission pipelines, but tailored to reflect the differences in distribution pipelines. Operators of natural gas distribution systems were required to write and implement their integrity management programs by August 2, 2011. Our pipeline subsidiaries met this deadline.

Pursuant to the 2002 Act and the 2006 Act, PHMSA has adopted a number of rules concerning, among other things, distinguishing between gathering lines and transmission facilities, requiring certain design and construction features in new and replaced lines to reduce corrosion and requiring pipeline operators to amend existing written operations and maintenance procedures and operator qualification programs. PHMSA also updated its reporting requirements for natural gas pipelines effective January 1, 2011.



In December 2011, Congress passed the Pipeline Safety, Regulatory Certainty, and Job Creation Act of 2011 (2011 Act). This act increases the maximum civil penalties for pipeline safety administrative enforcement actions; requires the DOT to study and report on the expansion of integrity management requirements and the sufficiency of existing gathering line regulations to ensure safety; requires pipeline operators to verify their records on maximum allowable operating pressure; and imposes new emergency response and incident notification requirements.

We anticipate that compliance with PHMSA's regulations, performance of the remediation activities by CERC's interstate and intrastate pipelines and natural gas distribution companies and verification of records on maximum allowable operating pressure will require increases in both capital expenditures and operating costs. The level of expenditures will depend upon several factors, including age, location and operating pressures of the facilities. In particular, the cost of compliance with DOT's integrity management rules will depend on integrity testing and the repairs found to be necessary by such testing. Changes to the amount of pipe subject to integrity management, whether by expansion of the definition of the type of areas subject to integrity management procedures or of the applicability of such procedures outside of those defined areas, may also affect the costs we incur. Implementation of the 2011 Act by PHMSA may result in other regulations or the reinterpretation of existing regulations that could impact our compliance costs. In addition, we may be subject to DOT's enforcement actions and penalties if we fail to comply with pipeline regulations.

## ENVIRONMENTAL MATTERS

Our operations are subject to stringent and complex laws and regulations pertaining to health, safety and the environment. As an owner or operator of natural gas pipelines and distribution systems, gas gathering and processing systems, and electric transmission and distribution systems, we must comply with these laws and regulations at the federal, state and local levels. These laws and regulations can restrict or impact our business activities in many ways, such as:

• restricting the way we can handle or dispose of wastes;

• limiting or prohibiting construction activities in sensitive areas such as wetlands, coastal regions or areas inhabited by endangered species;

• requiring remedial action to mitigate environmental conditions caused by our operations or attributable to former operations;

• enjoining the operations of facilities deemed in non-compliance with permits issued pursuant to such environmental laws and regulations; and

• impacting the demand for our services by directly or indirectly affecting the use or price of natural gas, or the ability to extract natural gas in areas we serve in our interstate pipelines and field services businesses.

In order to comply with these requirements, we may need to spend substantial amounts and devote other resources from time to time to:

• construct or acquire new equipment;

• acquire permits for facility operations;

• modify, upgrade or replace existing and proposed equipment; and

• clean up or decommission waste disposal areas, fuel storage and management facilities and other locations and facilities.

Failure to comply with these laws and regulations may trigger a variety of administrative, civil and criminal enforcement measures, including the assessment of monetary penalties, the imposition of remedial actions and the issuance of orders enjoining future operations. Certain environmental statutes impose strict, joint and several liability for costs required to clean up and restore sites where hazardous substances have been disposed or otherwise released. Moreover, it is not uncommon for neighboring landowners and other third parties to file claims for personal injury and property damage allegedly caused by the release of hazardous substances or other waste products into the environment.

The recent trend in environmental regulation has been to place more restrictions and limitations on activities that may affect the environment, and thus there can be no assurance as to the amount or timing of future expenditures for environmental compliance or remediation, and actual future expenditures may be different from the amounts we currently anticipate. We try to anticipate



future regulatory requirements that might be imposed and plan accordingly to remain in compliance with changing environmental laws and regulations and to ensure the costs of such compliance are reasonable.

Based on current regulatory requirements and interpretations, we do not believe that compliance with federal, state or local environmental laws and regulations will have a material adverse effect on our business, financial position, results of operations or cash flows. In addition, we believe that our current environmental remediation activities will not materially interrupt or diminish our operational ability. We cannot assure you, however, that future events, such as changes in existing laws, the promulgation of new laws, or the development or discovery of new facts or conditions will not cause us to incur significant costs. The following is a discussion of all material current environmental and safety laws and regulations that relate to our operations. We believe that we are in substantial compliance with all of these environmental laws and regulations.

## Global Climate Change

In recent years, there has been increasing public debate regarding the potential impact on global climate change by various “greenhouse gases” (GHGs) such as carbon dioxide, a byproduct of burning fossil fuels, and methane, the principal component of the natural gas that we transport and deliver to customers. The United States Congress has, from time to time, considered adopting legislation to reduce emissions of GHGs, and there has been a wide-ranging policy debate, both nationally and internationally, regarding the impact of these gases and possible means for their regulation. Some of the proposals would require industrial sources to meet stringent new standards that would require substantial reductions in carbon emissions. In addition, efforts have been made and continue to be made in the international community toward the adoption of international treaties or protocols that would address global climate change issues, such as the United Nations Climate Change Conference in Doha, Qatar in 2012. Following a finding by the U.S. Environmental Protection Agency (EPA) that certain GHGs represent an endangerment to human health, the EPA adopted two sets of rules regulating GHG emissions under the Clean Air Act. One requires a reduction in emissions of GHGs from motor vehicles beginning January 2, 2011. The other regulates emissions of GHGs from certain large stationary sources under the Clean Air Act's Prevention of Significant Deterioration and Title V programs, commencing when the motor vehicle standards took effect on January 2, 2011. Also, the EPA adopted its “Mandatory Reporting of Greenhouse Gases Rule” that requires the annual calculation and reporting of GHG emissions from natural gas transmission, gathering, processing and distribution systems and electric distribution systems that emit 25,000 metric tons or more of  \( CO_{2} \)  equivalent per year. These additional reporting requirements began in 2012 and we are currently in compliance. These permitting and reporting requirements could lead to further regulation of GHGs by the EPA.

Although the adoption of new legislation is uncertain, action by the EPA to impose new standards and reporting requirements regarding GHG emissions continues. As a distributor and transporter of natural gas and consumer of natural gas in its pipeline and gathering businesses, CERC’s revenues, operating costs and capital requirements could be adversely affected as a result of any regulatory action that would require installation of new control technologies or a modification of its operations or would have the effect of reducing the consumption of natural gas. Our electric transmission and distribution business, in contrast to some electric utilities, does not generate electricity and thus is not directly exposed to the risk of high capital costs and regulatory uncertainties that face electric utilities that burn fossil fuels to generate electricity. Nevertheless, CenterPoint Houston’s revenues could be adversely affected to the extent any resulting regulatory action has the effect of reducing consumption of electricity by ultimate consumers within its service territory. Likewise, incentives to conserve energy or use energy sources other than natural gas could result in a decrease in demand for our services. Conversely, regulatory actions that effectively promote the consumption of natural gas because of its lower emissions characteristics would be expected to beneficially affect CERC and its natural gas-related businesses. At this point in time, however, it would be speculative to try to quantify the magnitude of the impacts from possible new regulatory actions related to GHG emissions, either positive or negative, on our businesses.

To the extent climate changes occur, our businesses may be adversely impacted, though we believe any such impacts are likely to occur very gradually and hence would be difficult to quantify. To the extent global climate change results in warmer temperatures in our service territories, financial results from our natural gas distribution businesses could be adversely affected through lower gas sales, and our gas transmission and field services businesses could experience lower revenues. On the other hand, warmer temperatures in our electric service territory may increase our revenues from transmission and distribution through increased demand for electricity for cooling. Another possible effect of climate change is more frequent and more severe weather events, such as hurricanes or tornadoes. Since many of our facilities are located along or near the Gulf Coast, increased or more severe hurricanes or tornadoes could increase our costs to repair damaged facilities and restore service to our customers. When we cannot deliver electricity or natural gas to customers, or our customers cannot receive our services, our financial results can be impacted by lost revenues, and we generally must seek approval from regulators to recover restoration costs. To the extent we are unable to recover those costs, or if higher rates resulting from our recovery of such costs result in reduced demand for our services, our future financial results may be adversely impacted.



## Air Emissions

Our operations are subject to the federal Clean Air Act and comparable state laws and regulations. These laws and regulations regulate emissions of air pollutants from various industrial sources, including our processing plants and compressor stations, and also impose various monitoring and reporting requirements. Such laws and regulations may require that we obtain pre-approval for the construction or modification of certain projects or facilities expected to produce air emissions or result in the increase of existing air emissions, obtain and strictly comply with air permits containing various emissions and operational limitations, or utilize specific emission control technologies to limit emissions. Our failure to comply with these requirements could subject us to monetary penalties, injunctions, conditions or restrictions on operations, and potentially criminal enforcement actions. We may be required to incur certain capital expenditures in the future for air pollution control equipment in connection with obtaining and maintaining operating permits and approvals for air emissions.

The EPA continues to adopt amendments to its regulations regarding maximum achievable control technology for stationary internal combustion engines (sometimes referred to as the RICE MACT rule), the most recent being January 14, 2013. Compressors and back up electrical generators used by our Interstate Pipelines, Field Services and Natural Gas Distribution segments are generally compliant. Additional rules are expected to be proposed by the EPA this year for compliance by 2016 which could require an additional $50 million to $75 million in capital expenditure over the next three years. We believe, however, that our operations will not be materially adversely affected by such requirements.

In addition, on August 16, 2012, the EPA published final rules that establish new air emission control requirements for natural gas and NGL production, processing and transportation activities, including New Source Performance Standards to address emissions of sulfur dioxide and volatile organic compounds, and National Emission Standards for Hazardous Air Pollutants (NESHAPS) to address hazardous air pollutants frequently associated with gas production and processing activities. The finalized regulations establish specific new requirements for emissions from compressors, controllers, dehydrators, storage tanks, gas processing plants and certain other equipment. The final rules under NESHAPS include maximum achievable control technology standards for “small” glycol dehydrators that are located at major sources of hazardous air pollutants and modifications to the leak detection standards for valves. Compliance with such rules is not expected to result in significant costs that would adversely impact our results of operations.

## Water Discharges

Our operations are subject to the Federal Water Pollution Control Act of 1972, as amended, also known as the Clean Water Act, and analogous state laws and regulations. These laws and regulations impose detailed requirements and strict controls regarding the discharge of pollutants into waters of the United States. The unpermitted discharge of pollutants, including discharges resulting from a spill or leak incident, is prohibited. The Clean Water Act and regulations implemented thereunder also prohibit discharges of dredged and fill material in wetlands and other waters of the United States unless authorized by an appropriately issued permit. Any unpermitted release of petroleum or other pollutants from our pipelines or facilities could result in fines or penalties as well as significant remedial obligations.

## Hazardous Waste

Our operations generate wastes, including some hazardous wastes, that are subject to the federal Resource Conservation and Recovery Act (RCRA), and comparable state laws, which impose detailed requirements for the handling, storage, treatment, transport and disposal of hazardous and solid waste. RCRA currently exempts many natural gas gathering and field processing wastes from classification as hazardous waste. Specifically, RCRA excludes from the definition of hazardous waste waters produced and other wastes associated with the exploration, development or production of crude oil and natural gas. However, these oil and gas exploration and production wastes are still regulated under state law and the less stringent non-hazardous waste requirements of RCRA. Moreover, ordinary industrial wastes such as paint wastes, waste solvents, laboratory wastes and waste compressor oils may be regulated as hazardous waste. The transportation of natural gas in pipelines may also generate some hazardous wastes that would be subject to RCRA or comparable state law requirements.

## Liability for Remediation

The Comprehensive Environmental Response, Compensation and Liability Act of 1980, as amended (CERCLA), also known as “Superfund,” and comparable state laws impose liability, without regard to fault or the legality of the original conduct, on certain classes of persons responsible for the release of hazardous substances into the environment. Such classes of persons include the current and past owners or operators of sites where a hazardous substance was released and companies that disposed or arranged for the disposal of hazardous substances at offsite locations such as landfills. Although petroleum, as well as natural gas, is excluded from CERCLA’s definition of a “hazardous substance,” in the course of our ordinary operations we generate wastes that may fall



within the definition of a “hazardous substance.” CERCLA authorizes the EPA and, in some cases, third parties to take action in response to threats to the public health or the environment and to seek to recover from the responsible classes of persons the costs they incur. Under CERCLA, we could be subject to joint and several liability for the costs of cleaning up and restoring sites where hazardous substances have been released, for damages to natural resources, and for the costs of certain health studies.

## Liability for Preexisting Conditions

Manufactured Gas Plant Sites. CERC and its predecessors operated manufactured gas plants (MGPs) in the past. In Minnesota, CERC has completed remediation on two sites, other than ongoing monitoring and water treatment. There are five remaining sites in CERC’s Minnesota service territory. CERC believes that it has no liability with respect to two of these sites.

As of December 31, 2012, CERC had recorded a liability of $14 million for remediation of these Minnesota sites. The estimated range of possible remediation costs for the sites CERC believes it has responsibility for was $6 million to $41 million based on remediation continuing for 30 to 50 years. The cost estimates are based on studies of a site or industry average costs for remediation of sites of similar size. The actual remediation costs will be dependent upon the number of sites to be remediated, the participation of other potentially responsible parties (PRPs), if any, and the remediation methods used. The Minnesota Public Utilities Commission includes approximately $285,000 annually in rates to fund normal on-going remediation costs. As of December 31, 2012, CERC had collected $5.8 million from insurance companies to be used for future environmental remediation.

In addition to the Minnesota sites, the EPA and other regulators have investigated MGP sites that were owned or operated by CERC or may have been owned by one of its former affiliates. We and CERC do not expect the ultimate outcome of these investigations will have a material adverse impact on the financial condition, results of operations or cash flows of either us or CERC.

Asbestos. Some facilities owned by us contain or have contained asbestos insulation and other asbestos-containing materials. We or our subsidiaries have been named, along with numerous others, as a defendant in lawsuits filed by a number of individuals who claim injury due to exposure to asbestos. Some of the claimants have worked at locations owned by us, but most existing claims relate to facilities previously owned by our subsidiaries. We anticipate that additional claims like those received may be asserted in the future. In 2004, we sold our generating business, to which most of these claims relate, to a company which is now an affiliate of NRG. Under the terms of the arrangements regarding separation of the generating business from us and our sale of that business, ultimate financial responsibility for uninsured losses from claims relating to the generating business has been assumed by the NRG affiliate, but we have agreed to continue to defend such claims to the extent they are covered by insurance maintained by us, subject to reimbursement of the costs of such defense by the NRG affiliate. Although their ultimate outcome cannot be predicted at this time, we intend to continue vigorously contesting claims that we do not consider to have merit and do not expect, based on our experience to date, these matters, either individually or in the aggregate, to have a material adverse effect on our financial condition, results of operations or cash flows.

Other Environmental. From time to time we identify the presence of environmental contaminants on property where we conduct or have conducted operations. Other such sites involving contaminants may be identified in the future. We have remediated and expect to continue to remediate identified sites consistent with our legal obligations. From time to time we have received notices from regulatory authorities or others regarding our status as a PRP in connection with sites found to require remediation due to the presence of environmental contaminants. In addition, we have been named from time to time as a defendant in litigation related to such sites. Although the ultimate outcome of such matters cannot be predicted at this time, we do not expect, based on our experience to date, these matters, either individually or in the aggregate, to have a material adverse effect on our financial condition, results of operations or cash flows.



## EMPLOYEES

As of December 31, 2012, we had 8,720 full-time employees. The following table sets forth the number of our employees by business segment:

<table><tr><td>Business Segment</td><td>Number</td><td>Number Represented by Unions or Other Collective Bargaining Groups</td></tr><tr><td>Electric Transmission &amp; Distribution</td><td>2,550</td><td>1,255</td></tr><tr><td>Natural Gas Distribution</td><td>3,610</td><td>1,333</td></tr><tr><td>Competitive Natural Gas Sales and Services</td><td>148</td><td>—</td></tr><tr><td>Interstate Pipelines</td><td>747</td><td>—</td></tr><tr><td>Field Services</td><td>337</td><td>—</td></tr><tr><td>Other Operations</td><td>1,328</td><td>—</td></tr><tr><td>Total</td><td>8,720</td><td>2,588</td></tr></table>

As of December 31, 2012, approximately 30% of our employees were covered by collective bargaining agreements. The collective bargaining agreement with the International Brotherhood of Electrical Workers Union Local 66, which covers approximately 14% of our employees, is scheduled to expire in May 2013. We believe we have a good relationship with this bargaining unit and expect to negotiate a new agreement in 2013.

EXECUTIVE OFFICERS
(as of February 14, 2013)

<table><tr><td>Name</td><td>Age</td><td>Title</td></tr><tr><td>David M. McClanahan</td><td>63</td><td>President and Chief Executive Officer and Director</td></tr><tr><td>Scott M. Prochazka</td><td>46</td><td>Executive Vice President and Chief Operating Officer</td></tr><tr><td>Scott E. Rozzell</td><td>63</td><td>Executive Vice President, General Counsel and Corporate Secretary</td></tr><tr><td>Thomas R. Standish</td><td>63</td><td>Executive Vice President and Group President, Corporate and Energy Services</td></tr><tr><td>Gary L. Whitlock</td><td>63</td><td>Executive Vice President and Chief Financial Officer</td></tr><tr><td>Tracy B. Bridge</td><td>54</td><td>Senior Vice President and Division President, Electric Operations</td></tr><tr><td>C. Gregory Harper</td><td>48</td><td>Senior Vice President and Division Group President, Pipelines and Field Services</td></tr><tr><td>Joseph B. McGoldrick</td><td>59</td><td>Senior Vice President and Division President, Gas Operations</td></tr></table>

David M. McClanahan has been President and Chief Executive Officer and a director of CenterPoint Energy since September 2002. He served as Vice Chairman of Reliant Energy, Incorporated (Reliant Energy) from October 2000 to September 2002 and as President and Chief Operating Officer of Reliant Energy’s Delivery Group from April 1999 to September 2002. He previously served as Chairman of the Board of Directors of ERCOT, Chairman of the Board of the University of St. Thomas in Houston and Chairman of the Board of the American Gas Association. He currently serves on the boards of the Edison Electric Institute, the American Gas Association, and as Chairman of the Greater Houston Partnership.

Scott M. Prochazka has served as Executive Vice President and Chief Operating Officer of CenterPoint Energy since July 2012. He previously served as Senior Vice President and Division President, Electric Operations from May 2011 to July 2012; as Division Senior Vice President, Electric Operations of CenterPoint Houston from February 2009 to May 2011; as Division Senior Vice President Regional Operations of CERC from February 2008 to February 2009; and as Division Vice President, Customer Service Operations from October 2006 to February 2008. He also currently serves on the Board of Directors of ERCOT.

Scott E. Rozzell has served as Executive Vice President, General Counsel and Corporate Secretary of CenterPoint Energy since September 2002. He served as Executive Vice President and General Counsel of the Delivery Group of Reliant Energy from March 2001 to September 2002. Before joining Reliant Energy in 2001, Mr. Rozzell was a senior partner in the law firm of Baker Botts L.L.P. He currently serves on the Board of Directors of the Association of Electric Companies of Texas and Powell Industries, Inc.



Thomas R. Standish has served as Executive Vice President and Group President, Corporate and Energy Services of CenterPoint Energy since May 2011. He previously served as Senior Vice President and Group President-Regulated Operations of CenterPoint Energy from August 2005 to May 2011; as Senior Vice President and Group President and Chief Operating Officer of CenterPoint Houston from June 2004 to August 2005; and as President and Chief Operating Officer of CenterPoint Houston from August 2002 to June 2004. He served as President and Chief Operating Officer for both electricity and natural gas for Reliant Energy’s Houston area from 1999 to August 2002.

Gary L. Whitlock has served as Executive Vice President and Chief Financial Officer of CenterPoint Energy since September 2002. He served as Executive Vice President and Chief Financial Officer of the Delivery Group of Reliant Energy from July 2001 to September 2002. Mr. Whitlock served as the Vice President, Finance and Chief Financial Officer of Dow AgroSciences, a subsidiary of The Dow Chemical Company, from 1998 to 2001. He currently serves on the Board of Directors of KiOR, Inc.

Tracy B. Bridge has served as Senior Vice President and Division President, Electric Operations since September 2012. He previously served as Senior Vice President and Division President, Gas Distribution Operations from May 2011 to September 2012; as Division Senior Vice President - Support Operations from February 2008 to May 2011; and as Division Vice President Regional Operations of CERC from January 2007 to February 2008. He previously served on the Board of Directors of the Southern Gas Association.

C. Gregory Harper has served as Senior Vice President and Group President, Pipelines and Field Services since December 2008. Before joining CenterPoint Energy in 2008, Mr. Harper served as President, Chief Executive Officer and as a Director of Spectra Energy Partners, LP from March 2007 to December 2008. From January 2007 to March 2007, Mr. Harper was Group Vice President of Spectra Energy Corp., and he was Group Vice President of Duke Energy from January 2004 to December 2006. Mr. Harper served as Senior Vice President of Energy Marketing and Management for Duke Energy North America from January 2003 until January 2004 and Vice President of Business Development for Duke Energy Gas Transmission and Vice President of East Tennessee Natural Gas, LLC from March 2002 until January 2003. He currently serves on the Board of Directors and as Chairman of the Interstate Natural Gas Association of America.

Joseph B. McGoldrick has served as Senior Vice President and Division President, Gas Operations since September 2012. He previously served as Senior Vice President and Division President, Energy Services from May 2011 to September 2012 and as Division President, Gas Operations from February 2007 to May 2011. He previously served on the Board of Directors of the Southern Gas Association.

## Item 1A. Risk Factors

We are a holding company that conducts all of our business operations through subsidiaries, primarily CenterPoint Houston and CERC. The following, along with any additional legal proceedings identified or incorporated by reference in Item 3 of this report, summarizes the principal risk factors associated with the businesses conducted by each of these subsidiaries:

## Risk Factors Affecting Our Electric Transmission & Distribution Business

A substantial portion of CenterPoint Houston’s receivables is concentrated in a small number of REPs, and any delay or default in payment could adversely affect CenterPoint Houston’s cash flows, financial condition and results of operations.

CenterPoint Houston’s receivables from the distribution of electricity are collected from REPs that supply the electricity CenterPoint Houston distributes to their customers. As of December 31, 2012, CenterPoint Houston did business with approximately 75 REPs. Adverse economic conditions, structural problems in the market served by ERCOT or financial difficulties of one or more REPs could impair the ability of these REPs to pay for CenterPoint Houston’s services or could cause them to delay such payments. CenterPoint Houston depends on these REPs to remit payments on a timely basis. Applicable regulatory provisions require that customers be shifted to a provider of last resort if a REP cannot make timely payments. Applicable Texas Utility Commission regulations significantly limit the extent to which CenterPoint Houston can apply normal commercial terms or otherwise seek credit protection from firms desiring to provide retail electric service in its service territory, and thus remains at risk for payments not made prior to the shift to the provider of last resort. The Texas Utility Commission revised its regulations in 2009 to (i) increase the financial qualifications required of REPs that began selling power after January 1, 2009, and (ii) authorize utilities to defer bad debts resulting from defaults by REPs for recovery in a future rate case. A significant portion of CenterPoint Houston’s billed receivables from REPs are from affiliates of NRG and affiliates of Energy Future Holdings. CenterPoint Houston’s aggregate billed receivables balance from REPs as of December 31, 2012 was $158 million. Approximately 42% of this amount was owed by affiliates of NRG. Any delay or default in payment by REPs could adversely affect CenterPoint Houston’s cash flows, financial condition and results of operations. If a REP were unable to meet its obligations, it could consider, among various



options, restructuring under the bankruptcy laws, in which event such REP might seek to avoid honoring its obligations, and claims might be made by creditors involving payments CenterPoint Houston had received from such REP.

Rate regulation of CenterPoint Houston’s business may delay or deny CenterPoint Houston’s ability to earn a reasonable return and fully recover its costs.

CenterPoint Houston’s rates are regulated by certain municipalities and the Texas Utility Commission based on an analysis of its invested capital and its expenses in a test year. Thus, the rates that CenterPoint Houston is allowed to charge may not match its expenses at any given time. The regulatory process by which rates are determined may not always result in rates that will produce full recovery of CenterPoint Houston’s costs and enable CenterPoint Houston to earn a reasonable return on its invested capital.

Disruptions at power generation facilities owned by third parties could interrupt CenterPoint Houston’s sales of transmission and distribution services.

CenterPoint Houston transmits and distributes to customers of REPs electric power that the REPs obtain from power generation facilities owned by third parties. CenterPoint Houston does not own or operate any power generation facilities. If power generation is disrupted or if power generation capacity is inadequate, CenterPoint Houston’s sales of transmission and distribution services may be diminished or interrupted, and its results of operations, financial condition and cash flows could be adversely affected.

CenterPoint Houston’s revenues and results of operations are seasonal.

A significant portion of CenterPoint Houston’s revenues is derived from rates that it collects from each REP based on the amount of electricity it delivers on behalf of such REP. Thus, CenterPoint Houston’s revenues and results of operations are subject to seasonality, weather conditions and other changes in electricity usage, with revenues generally being higher during the warmer months.

CenterPoint Houston could be subject to higher costs and fines or other sanctions as a result of mandatory reliability standards.

The FERC has jurisdiction with respect to ensuring the reliability of electric transmission service, including transmission facilities owned by CenterPoint Houston and other utilities within ERCOT. The FERC has designated the NERC as the ERO to promulgate standards, under FERC oversight, for all owners, operators and users of the bulk power system. The FERC has approved the delegation by the NERC of authority for reliability in ERCOT to the TRE, a functionally independent division of ERCOT. Compliance with the mandatory reliability standards may subject CenterPoint Houston to higher operating costs and may result in increased capital expenditures. In addition, if CenterPoint Houston were to be found to be in noncompliance with applicable mandatory reliability standards, it could be subject to sanctions, including substantial monetary penalties.

The AMS deployed throughout CenterPoint Houston’s service territory may experience unexpected problems with respect to the timely receipt of accurate metering data.

CenterPoint Houston has deployed an AMS throughout its service territory. The deployment consisted, among other elements, of replacing existing meters with new electronic meters that record metering data at 15-minute intervals and wirelessly communicate that information to CenterPoint Houston over a bi-directional communications system installed for that purpose. The AMS integrates equipment and computer software from various vendors in order to eliminate the need for physical meter readings to be taken at consumers' premises, such as monthly readings for billing purposes and special readings associated with a customer's change in REPs or the connection or disconnection of electric service. Unanticipated difficulties could be encountered during the operation of the AMS, including failures or inadequacy of equipment or software, difficulties in integrating the various components of the AMS, changes in technology, cyber-security issues and factors outside the control of CenterPoint Houston, which could result in delayed or inaccurate metering data that might lead to delays or inaccuracies in the calculation and imposition of delivery or other charges, which could have a material adverse affect on CenterPoint Houston's results of operations, financial condition and cash flows.



Risk Factors Affecting Our Natural Gas Distribution, Competitive Natural Gas Sales and Services, Interstate Pipelines and Field Services Businesses

Rate regulation of CERC’s business may delay or deny CERC’s ability to earn a reasonable return and fully recover its costs.

CERC’s rates for Gas Operations are regulated by certain municipalities and state commissions, and for its interstate pipelines by the FERC, based on an analysis of its invested capital and its expenses in a test year. Thus, the rates that CERC is allowed to charge may not match its expenses at any given time. The regulatory process in which rates are determined may not always result in rates that will produce full recovery of CERC’s costs and enable CERC to earn a reasonable return on its invested capital.

CERC’s businesses must compete with alternate energy sources, which could result in CERC marketing less natural gas, and its interstate pipelines and field services businesses must compete directly with others in the transportation, storage, gathering, treating and processing of natural gas, which could lead to lower prices and reduced volumes, either of which could have an adverse impact on CERC’s results of operations, financial condition and cash flows.

CERC competes primarily with alternate energy sources such as electricity and other fuel sources. In some areas, intrastate pipelines, other natural gas distributors and marketers also compete directly with CERC for natural gas sales to end-users. In addition, as a result of federal regulatory changes affecting interstate pipelines, natural gas marketers operating on these pipelines may be able to bypass CERC’s facilities and market, sell and/or transport natural gas directly to commercial and industrial customers. Any reduction in the amount of natural gas marketed, sold or transported by CERC as a result of competition may have an adverse impact on CERC’s results of operations, financial condition and cash flows.

CERC’s two interstate pipelines and its gathering systems compete with other interstate and intrastate pipelines and gathering systems in the transportation and storage of natural gas. The principal elements of competition are rates, terms of service, and flexibility and reliability of service. They also compete indirectly with other forms of energy, including electricity, coal and fuel oils. The primary competitive factor is price, but recently, environmental considerations have grown in importance when consumers consider alternative forms of energy. Excess pipeline capacity in the regions served by CERC’s interstate pipelines could also increase competition and adversely impact CERC’s ability to re-contract its available capacity when contracts expire. The actions of CERC’s competitors could lead to lower prices, which may have an adverse impact on CERC’s results of operations, financial condition and cash flows. Additionally, any reduction in the volume of natural gas transported or stored may have an adverse impact on CERC’s results of operations, financial condition and cash flows.

CERC’s natural gas distribution and competitive natural gas sales and services businesses are subject to fluctuations in notional natural gas prices as well as geographic and seasonal natural gas price differentials, which could affect the ability of CERC’s suppliers and customers to meet their obligations or otherwise adversely affect CERC’s liquidity and results of operations and financial condition.

CERC is subject to risk associated with changes in the notional price of natural gas as well as geographic and seasonal natural gas price differentials. Increases in natural gas prices might affect CERC’s ability to collect balances due from its customers and, for Gas Operations, could create the potential for uncollectible accounts expense to exceed the recoverable levels built into CERC’s tariff rates. In addition, a sustained period of high natural gas prices could (i) apply downward demand pressure on natural gas consumption in the areas in which CERC operates, thereby resulting in decreased sales and transportation volumes and revenues and (ii) increase the risk that CERC’s suppliers or customers fail or are unable to meet their obligations. An increase in natural gas prices would also increase CERC’s working capital requirements by increasing the investment that must be made in order to maintain natural gas inventory levels. Additionally, a decrease in natural gas prices could increase the amount of collateral that CERC must provide under its hedging arrangements. Changes in geographic and seasonal natural gas price differentials affect the value of CERC’s transportation and storage services and its ability to re-contract its available capacity when contracts expire.

A decline in CERC’s credit rating could result in CERC’s having to provide collateral under its shipping or hedging arrangements or in order to purchase natural gas.

If CERC’s credit rating were to decline, it might be required to post cash collateral under its shipping or hedging arrangements or in order to purchase natural gas. If a credit rating downgrade and the resultant cash collateral requirement were to occur at a time when CERC was experiencing significant working capital requirements or otherwise lacked liquidity, CERC’s results of operations, financial condition and cash flows could be adversely affected.



The revenues and results of operations of CERC’s interstate pipelines and field services businesses are subject to fluctuations in the supply and price of natural gas and natural gas liquids and regulatory and other issues impacting our customers’ production decisions.

CERC’s interstate pipelines and field services businesses largely rely on natural gas sourced in the various supply basins located in the Mid-continent region of the United States. The level of drilling and production activity in these regions is dependent on economic and business factors beyond our control. The primary factor affecting both the level of drilling activity and production volumes is natural gas pricing. A sustained decline in natural gas prices could result in a decrease in exploration and development activities in the regions served by our gathering and pipeline transportation systems and our natural gas treating and processing activities. A sustained decline could also lead producers to shut in production from their existing wells. Other factors that impact production decisions include the level of production costs relative to other available production, producers’ access to needed capital and the cost of that capital, access to drilling rigs, the ability of producers to obtain necessary drilling and other governmental permits and regulatory changes. Regulatory changes include the potential for more restrictive rules governing the use of hydraulic fracturing, a process used in the extraction of natural gas from shale reservoir formations, and the use of water in that process. Because of these factors, even if new natural gas reserves are discovered in areas served by our assets, producers may choose not to develop those reserves or to shut in production from existing reserves. To the extent the availability of this supply is substantially reduced, it could have an adverse effect on CERC’s results of operations, financial condition and cash flows.

CERC’s revenues from these businesses are also affected by the prices of natural gas and natural gas liquids (NGLs). Although the gathering revenues from our field services operations are primarily fee-based, a small portion of these revenues is related to sales of natural gas that we retain from either a usage component of our contracts or from compressor efficiencies, and a reduction in natural gas prices could adversely impact these revenues. NGL prices generally fluctuate on a basis that correlates to fluctuations in crude oil prices. In the past, the prices of natural gas and crude oil have been extremely volatile, and we expect this volatility to continue. The markets and prices for natural gas, NGLs and crude oil depend upon factors beyond our control. These factors include supply of and demand for these commodities, which fluctuate with changes in market and economic conditions and other factors.

## CERC’s revenues and results of operations are seasonal.

A substantial portion of CERC’s revenues is derived from natural gas sales and transportation. Thus, CERC’s revenues and results of operations are subject to seasonality, weather conditions and other changes in natural gas usage, with revenues being higher during the winter months.

The actual cost of pipelines and gathering systems under construction, future pipeline, gathering and treating systems and related compression facilities may be significantly higher than CERC anticipates.

Subsidiaries of CERC Corp. have been recently involved in significant pipeline and gathering construction projects and, depending on available opportunities, may, from time to time, be involved in additional significant pipeline construction and gathering and treating system projects in the future. The construction of new pipelines, gathering and treating systems and related compression facilities may require the expenditure of significant amounts of capital, which may exceed CERC’s estimates. These projects may not be completed at the planned cost, on schedule or at all. The construction of new pipeline, gathering, treating or compression facilities is subject to construction cost overruns due to labor costs, costs of equipment and materials such as steel and nickel, labor shortages or delays, weather delays, inflation or other factors, which could be material. In addition, the construction of these facilities is typically subject to the receipt of approvals and permits from various regulatory agencies. Those agencies may not approve the projects in a timely manner or may impose restrictions or conditions on the projects that could potentially prevent a project from proceeding, lengthen its expected completion schedule and/or increase its anticipated cost. As a result, there is the risk that the new facilities may not be able to achieve CERC’s expected investment return, which could adversely affect CERC’s financial condition, results of operations or cash flows.

The states in which CERC provides regulated local gas distribution may, either through legislation or rules, adopt restrictions regarding organization, financing and affiliate transactions that could have significant adverse impacts on CERC’s ability to operate.

The Public Utility Holding Company Act of 1935, to which CERC Corp. and its subsidiaries were subject prior to its repeal in 2005, provided a comprehensive regulatory structure governing the organization, capital structure, intracompany relationships and lines of business that could be pursued by registered holding companies and their member companies. Following repeal of that act, proposals have been put forth in some of the states in which CERC does business that have sought to expand the state regulatory frameworks to give state regulatory authorities increased jurisdiction and scrutiny over similar aspects of the utilities that operate in those states. Some of these frameworks attempt to regulate financing activities, acquisitions and divestitures, and



arrangements between the utilities and their affiliates, and to restrict the level of non-utility business that can be conducted within the holding company structure. Additionally, they may impose record-keeping, record access, employee training and reporting requirements related to affiliate transactions and reporting in the event of certain downgrading of the utility’s credit rating.

These regulatory frameworks could have adverse effects on CERC’s ability to conduct its utility operations, to finance its business and to provide cost-effective utility service. In addition, if more than one state adopts restrictions on similar activities, it may be difficult for CERC and us to comply with competing regulatory requirements.

## Risk Factors Associated with Our Consolidated Financial Condition

If we are unable to arrange future financings on acceptable terms, our ability to refinance existing indebtedness could be limited.

As of December 31, 2012, we had $9.8 billion of outstanding indebtedness on a consolidated basis, which includes $3.8 billion of non-recourse transition and system restoration bonds. As of December 31, 2012, approximately $1.4 billion principal amount of this debt is required to be paid through 2015. This amount excludes principal repayments of approximately $1.2 billion on transition and system restoration bonds, for which dedicated revenue streams exist. Our future financing activities may be significantly affected by, among other things:

• general economic and capital market conditions;

• credit availability from financial institutions and other lenders;

• investor confidence in us and the markets in which we operate;

• maintenance of acceptable credit ratings;

• market expectations regarding our future earnings and cash flows;

• market perceptions of our ability to access capital markets on reasonable terms;

- our exposure to GenOn Energy, Inc. (GenOn) (formerly known as RRI Energy, Inc., Reliant Energy, Inc. and Reliant Resources, Inc. (RRI)), a wholly owned subsidiary of NRG, in connection with certain indemnification obligations;

• incremental collateral that may be required due to regulation of derivatives; and

• provisions of relevant tax and securities laws.

As of December 31, 2012, CenterPoint Houston had approximately $2.4 billion aggregate principal amount of general mortgage bonds outstanding under the General Mortgage, (a) including $290 million held in trust to secure pollution control bonds that are not reflected in our consolidated financial statements because we are both the obligor on the bonds and the current owner of the bonds, (b) approximately $118 million held in trust to secure pollution control bonds for which we are obligated and (c) approximately $183 million held in trust to secure pollution control bonds for which CenterPoint Houston is obligated. Additionally, as of December 31, 2012, CenterPoint Houston had approximately $253 million aggregate principal amount of first mortgage bonds outstanding under the Mortgage, including approximately $151 million held in trust to secure certain pollution control bonds for which we are obligated. CenterPoint Houston may issue additional general mortgage bonds on the basis of retired bonds, 70% of property additions or cash deposited with the trustee. Approximately $2.9 billion of additional first mortgage bonds and general mortgage bonds in the aggregate could be issued on the basis of retired bonds and 70% of property additions as of December 31, 2012. However, CenterPoint Houston has contractually agreed that it will not issue additional first mortgage bonds, subject to certain exceptions.

Our current credit ratings are discussed in “Management’s Discussion and Analysis of Financial Condition and Results of Operations — Liquidity and Capital Resources — Future Sources and Uses of Cash — Impact on Liquidity of a Downgrade in Credit Ratings” in Item 7 of Part II of this report. These credit ratings may not remain in effect for any given period of time and one or more of these ratings may be lowered or withdrawn entirely by a rating agency. We note that these credit ratings are not recommendations to buy, sell or hold our securities. Each rating should be evaluated independently of any other rating. Any future reduction or withdrawal of one or more of our credit ratings could have a material adverse impact on our ability to access capital on acceptable terms.



As a holding company with no operations of our own, we will depend on distributions from our subsidiaries to meet our payment obligations, and provisions of applicable law or contractual restrictions could limit the amount of those distributions.

We derive all of our operating income from, and hold all of our assets through, our subsidiaries. As a result, we depend on distributions from our subsidiaries in order to meet our payment obligations. In general, these subsidiaries are separate and distinct legal entities and have no obligation to provide us with funds for our payment obligations, whether by dividends, distributions, loans or otherwise. In addition, provisions of applicable law, such as those limiting the legal sources of dividends, limit our subsidiaries' ability to make payments or other distributions to us, and our subsidiaries could agree to contractual restrictions on their ability to make distributions.

Our right to receive any assets of any subsidiary, and therefore the right of our creditors to participate in those assets, will be effectively subordinated to the claims of that subsidiary’s creditors, including trade creditors. In addition, even if we were a creditor of any subsidiary, our rights as a creditor would be subordinated to any security interest in the assets of that subsidiary and any indebtedness of the subsidiary senior to that held by us.

Poor investment performance of the pension plan and factors adversely affecting the calculation of pension liabilities could unfavorably impact our liquidity and results of operations.

We maintain a qualified defined benefit pension plan covering all employees. Our costs of providing this plan are dependent upon a number of factors including the investment returns on plan assets, the level of interest rates used to calculate the funded status of the plan, our contributions to the plan and government regulations with respect to funding requirements and the calculation of plan liabilities. Funding requirements may increase as a result of a decline in the market value of plan assets, a decline in the interest rates used to calculate the present value of future plan obligations or government regulations that increase minimum funding requirements or the pension liability. In addition to affecting our funding requirements, each of these factors could adversely affect our results of operations and financial position.

The use of derivative contracts by us and our subsidiaries in the normal course of business could result in financial losses that could negatively impact our results of operations and those of our subsidiaries.

We and our subsidiaries use derivative instruments, such as swaps, options, futures and forwards, to manage our commodity, weather and financial market risks. We and our subsidiaries could recognize financial losses as a result of volatility in the market values of these contracts or should a counterparty fail to perform. In the absence of actively quoted market prices and pricing information from external sources, the valuation of these financial instruments can involve management’s judgment or use of estimates. As a result, changes in the underlying assumptions or use of alternative valuation methods could affect the reported fair value of these contracts.

## Risks Common to Our Businesses and Other Risks

We are subject to operational and financial risks and liabilities arising from environmental laws and regulations.

Our operations are subject to stringent and complex laws and regulations pertaining to health, safety, and the environment. As an owner or operator of natural gas pipelines and distribution systems, gas gathering and processing systems, and electric transmission and distribution systems, we must comply with these laws and regulations at the federal, state and local levels. These laws and regulations can restrict or impact our business activities in many ways, such as:

• restricting the way we can handle or dispose of wastes;

• limiting or prohibiting construction activities in sensitive areas such as wetlands, coastal regions, or areas inhabited by endangered species;

• requiring remedial action to mitigate environmental conditions caused by our operations, or attributable to former operations;

• enjoining the operations of facilities deemed in non-compliance with permits issued pursuant to such environmental laws and regulations; and

• impacting the demand for our services by directly or indirectly affecting the use or price of natural gas, or the ability to extract natural gas in areas we serve in our interstate pipelines and field services businesses.



In order to comply with these requirements, we may need to spend substantial amounts and devote other resources from time to time to:

• construct or acquire new equipment;

• acquire permits for facility operations;

• modify or replace existing and proposed equipment; and

• clean up or decommission waste disposal areas, fuel storage and management facilities and other locations and facilities.

Failure to comply with these laws and regulations may trigger a variety of administrative, civil and criminal enforcement measures, including the assessment of monetary penalties, the imposition of remedial actions, and the issuance of orders enjoining future operations. Certain environmental statutes impose strict, joint and several liability for costs required to clean up and restore sites where hazardous substances have been disposed or otherwise released. Moreover, it is not uncommon for neighboring landowners and other third parties to file claims for personal injury and property damage allegedly caused by the release of hazardous substances or other waste products into the environment.

The recent trend in environmental regulation has been to place more restrictions and limitations on activities that may affect the environment, and thus there can be no assurance as to the amount or timing of future expenditures for environmental compliance or remediation, and actual future expenditures may be greater than the amounts we currently anticipate.

Our insurance coverage may not be sufficient. Insufficient insurance coverage and increased insurance costs could adversely impact our results of operations, financial condition and cash flows.

We currently have general liability and property insurance in place to cover certain of our facilities in amounts that we consider appropriate. Such policies are subject to certain limits and deductibles and do not include business interruption coverage. Insurance coverage may not be available in the future at current costs or on commercially reasonable terms, and the insurance proceeds received for any loss of, or any damage to, any of our facilities may not be sufficient to restore the loss or damage without negative impact on our results of operations, financial condition and cash flows.

In common with other companies in its line of business that serve coastal regions, CenterPoint Houston does not have insurance covering its transmission and distribution system, other than substations, because CenterPoint Houston believes it to be cost prohibitive. In the future, CenterPoint Houston may not be able to recover the costs incurred in restoring its transmission and distribution properties following hurricanes or other natural disasters through issuance of storm restoration bonds or a change in its regulated rates or otherwise, or any such recovery may not be timely granted. Therefore, CenterPoint Houston may not be able to restore any loss of, or damage to, any of its transmission and distribution properties without negative impact on its results of operations, financial condition and cash flows.

We, CenterPoint Houston and CERC could incur liabilities associated with businesses and assets that we have transferred to others.

Under some circumstances, we, CenterPoint Houston and CERC could incur liabilities associated with assets and businesses we, CenterPoint Houston and CERC no longer own. These assets and businesses were previously owned by Reliant Energy, Incorporated (Reliant Energy), a predecessor of CenterPoint Houston, directly or through subsidiaries and include:

- merchant energy, energy trading and REP businesses transferred to RRI or its subsidiaries in connection with the organization and capitalization of RRI prior to its initial public offering in 2001 and now owned by affiliates of NRG; and

- Texas electric generating facilities transferred to a subsidiary of Texas Genco Holdings, Inc. (Texas Genco) in 2002, later sold to a third party and now owned by an affiliate of NRG.

In connection with the organization and capitalization of RRI (now GenOn), that company and its subsidiaries assumed liabilities associated with various assets and businesses Reliant Energy transferred to them. RRI also agreed to indemnify, and cause the applicable transferee subsidiaries to indemnify, us and our subsidiaries, including CenterPoint Houston and CERC, with respect to liabilities associated with the transferred assets and businesses. These indemnity provisions were intended to place sole financial responsibility on RRI and its subsidiaries for all liabilities associated with the current and historical businesses and operations of RRI, regardless of the time those liabilities arose. If RRI (now GenOn) were unable to satisfy a liability that has



been so assumed in circumstances in which Reliant Energy and its subsidiaries were not released from the liability in connection with the transfer, we, CenterPoint Houston or CERC could be responsible for satisfying the liability.

Prior to the distribution of our ownership in RRI to our shareholders, CERC had guaranteed certain contractual obligations of what became RRI’s trading subsidiary. When the companies separated, RRI agreed to secure CERC against obligations under the guaranties RRI had been unable to extinguish by the time of separation. Pursuant to such agreement, as amended in December 2007, RRI (now GenOn) agreed to provide to CERC cash or letters of credit as security against CERC’s obligations under its remaining guaranties for demand charges under certain gas transportation agreements if and to the extent changes in market conditions expose CERC to a risk of loss on those guaranties based on an annual calculation, with any required collateral to be posted each December. The undiscounted maximum potential payout of the demand charges under these transportation contracts, which will be in effect until 2018, was approximately $73 million as of December 31, 2012. Based on market conditions in the fourth quarter of 2012 at the time the most recent annual calculation was made under the agreement, GenOn was not obligated to post any security. As a result, CenterPoint Energy returned to GenOn in the fourth quarter of 2012 the approximately $28 million of aggregate collateral previously posted by GenOn under the agreement. If GenOn should fail to perform the contractual obligations, CERC could have to honor its guarantee and, in such event, any collateral then provided as security may be insufficient to satisfy CERC’s obligations.

GenOn's unsecured debt ratings are currently below investment grade. If GenOn were unable to meet its obligations, it could consider, among various options, restructuring under the bankruptcy laws, in which event GenOn might not honor its indemnification obligations and claims by GenOn's creditors might be made against us as its former owner.

Reliant Energy and RRI (GenOn’s predecessor) are named as defendants in a number of lawsuits arising out of sales of natural gas in California and other markets. Although these matters relate to the business and operations of GenOn, claims against Reliant Energy have been made on grounds that include liability of Reliant Energy as a controlling shareholder of GenOn’s predecessor. We, CenterPoint Houston or CERC could incur liability if claims in one or more of these lawsuits were successfully asserted against us, CenterPoint Houston or CERC and indemnification from GenOn were determined to be unavailable or if GenOn were unable to satisfy indemnification obligations owed with respect to those claims.

In connection with the organization and capitalization of Texas Genco (now an affiliate of NRG), Reliant Energy and Texas Genco entered into a separation agreement in which Texas Genco assumed liabilities associated with the electric generation assets Reliant Energy transferred to it. Texas Genco also agreed to indemnify, and cause the applicable transferee subsidiaries to indemnify, us and our subsidiaries, including CenterPoint Houston, with respect to liabilities associated with the transferred assets and businesses. In many cases the liabilities assumed were obligations of CenterPoint Houston, and CenterPoint Houston was not released by third parties from these liabilities. The indemnity provisions were intended generally to place sole financial responsibility on Texas Genco and its subsidiaries for all liabilities associated with the current and historical businesses and operations of Texas Genco, regardless of the time those liabilities arose. If Texas Genco (now an affiliate of NRG) were unable to satisfy a liability that had been so assumed or indemnified against, and provided we or Reliant Energy had not been released from the liability in connection with the transfer, CenterPoint Houston could be responsible for satisfying the liability.

In connection with our sale of Texas Genco, the separation agreement was amended to provide that Texas Genco would no longer be liable for, and we would assume and agree to indemnify Texas Genco against, liabilities that Texas Genco originally assumed in connection with its organization to the extent, and only to the extent, that such liabilities are covered by certain insurance policies held by us. Texas Genco and its related businesses now operate as subsidiaries of NRG.

We or our subsidiaries have been named, along with numerous others, as a defendant in lawsuits filed by a number of individuals who claim injury due to exposure to asbestos. Some of the claimants have worked at locations owned by us, but most existing claims relate to facilities previously owned by our subsidiaries. We anticipate that additional claims like those received may be asserted in the future. Under the terms of the arrangements regarding separation of the generating business from us and our sale of that business to an affiliate of NRG, ultimate financial responsibility for uninsured losses from claims relating to the generating business has been assumed by the NRG affiliate, but we have agreed to continue to defend such claims to the extent they are covered by insurance maintained by us, subject to reimbursement of the costs of such defense by the NRG affiliate.

Cyber-attacks, acts of terrorism or other disruptions could adversely impact our results of operations, financial condition and cash flows.

We are subject to cyber-security risks related to breaches in the systems and technology that we use (i) to manage our operations and other business processes and (ii) to protect sensitive information maintained in the normal course of our businesses. The operation of our electric transmission and distribution system is dependent on not only physical interconnection of our facilities, but also on communications among the various components of our system. As we deploy smart meters and the intelligent grid,



reliance on communication between and among those components increases. Similarly, the distribution of natural gas to our customers and the gathering, processing and transportation of natural gas from our gathering, processing and pipeline facilities, are dependent on communications among our facilities and with third-party systems that may be delivering natural gas into or receiving natural gas and other products from our facilities. Disruption of those communications, whether caused by physical disruption such as storms or other natural phenomena, by failure of equipment or technology, or by manmade events, such as cyber-attacks or acts of terrorism, may disrupt our ability to deliver electricity and gas and control these assets. Cyber-attacks could also result in the loss of confidential or proprietary data or security breaches of other information technology systems that could disrupt our operations and critical business functions, adversely affect our reputation, and subject us to possible legal claims and liability, any of which could have a material adverse effect on our results of operations, financial condition and cash flows. In addition, our electrical distribution and transmission facilities and gas distribution and pipeline systems may be targets of terrorist activities that could disrupt our ability to conduct our business and have a material adverse effect on our results of operations, financial condition and cash flows.

Our results of operations, financial condition and cash flows may be adversely affected if we are unable to successfully operate our facilities or perform certain corporate functions.

Our performance depends on the successful operation of our facilities. Operating these facilities involves many risks, including:

• operator error or failure of equipment or processes;

• operating limitations that may be imposed by environmental or other regulatory requirements;

• labor disputes;

• information technology system failures; and

- catastrophic events such as fires, earthquakes, explosions, floods, droughts, hurricanes, pandemic health events or other similar occurrences.

Such events may result in a decrease or elimination of revenue from our facilities, an increase in the cost of operating our facilities or delays in cash collections, any of which could have a material adverse effect on our results of operations, financial condition and/or cash flows.

Our merger and acquisition activities may not be successful or may result in completed acquisitions that do not perform as anticipated.

From time to time, we have made and may continue to make acquisitions of businesses and assets. However, suitable acquisition candidates may not continue to be available on terms and conditions we find acceptable. In addition, any completed or future acquisitions involve substantial risks, including the following:

• acquired businesses or assets may not produce revenues, earnings or cash flow at anticipated levels;

• acquired businesses or assets could have environmental, permitting or other problems for which contractual protections prove inadequate;

• we may assume liabilities that were not disclosed to us, that exceed our estimates, or for which our rights to indemnification from the seller are limited;

• we may be unable to integrate acquired businesses successfully and realize anticipated economic, operational and other benefits in a timely manner, which could result in substantial costs and delays or other operational, technical or financial problems; and

• acquisitions, or the pursuit of acquisitions, could disrupt our ongoing businesses, distract management, divert resources and make it difficult to maintain our current business standards, controls and procedures.

Failure to attract and retain an appropriately qualified workforce could adversely impact our results of operations.

Our business is dependent on our ability to recruit, retain, and motivate employees. Certain circumstances, such as an aging workforce without appropriate replacements, a mismatch of existing skillsets to future needs, or the unavailability of contract



resources may lead to operating challenges such as a lack of resources, loss of knowledge or a lengthy time period associated with skill development. Our costs, including costs for contractors to replace employees, productivity costs and safety costs, may rise. Failure to hire and adequately train replacement employees, including the transfer of significant internal historical knowledge and expertise to the new employees, or the future availability and cost of contract labor may adversely affect the ability to manage and operate our business. If we are unable to successfully attract and retain an appropriately qualified workforce, our results of operations could be negatively affected.

The unsettled conditions in the global financial system may have impacts on our business, liquidity and financial condition that we currently cannot predict.

The continued unsettled conditions in the global financial system may have an impact on our business, liquidity and financial condition. Our ability to access the capital markets may be severely restricted at a time when we would like, or need, to access those markets, which could have an impact on our liquidity and flexibility to react to changing economic and business conditions. In addition, the cost of debt financing and the proceeds of equity financing may be materially adversely impacted by these market conditions. Defaults of lenders in our credit facilities, should they occur, could adversely affect our liquidity.

In addition to the credit and financial market issues, a recurrence of national and local recessionary conditions may impact our business in a variety of ways. These include, among other things, reduced customer usage, increased customer default rates and wide swings in commodity prices.

Climate change legislation and regulatory initiatives could result in increased operating costs and reduced demand for our services.

The United States Congress has from time to time considered adopting legislation to reduce emissions of GHGs, and there has been a wide-ranging policy debate, both nationally and internationally, regarding the impact of these gases and possible means for their regulation. In addition, efforts have been made and continue to be made in the international community toward the adoption of international treaties or protocols that would address global climate change issues, such as the United Nations Climate Change Conference in Doha, Qatar in 2012. Following a finding by the EPA that certain GHGs represent an endangering to human health, the EPA adopted two sets of rules regulating GHG emissions under the Clean Air Act, one that requires a reduction in emissions of GHGs from motor vehicles and another that regulates emissions of GHGs from certain large stationary sources. In addition, the EPA expanded its existing GHG emissions reporting requirements to include upstream petroleum and natural gas systems that emit 25,000 metric tons of  \( CO_{2} \)  equivalent per year. These permitting and reporting requirements could lead to further regulation of GHGs by the EPA. As a distributor and transporter of natural gas and consumer of natural gas in its pipeline and gathering businesses, CERC’s revenues, operating costs and capital requirements could be adversely affected as a result of any regulatory action that would require installation of new control technologies or a modification of its operations or would have the effect of reducing the consumption of natural gas. Our electric transmission and distribution business, in contrast to some electric utilities, does not generate electricity and thus is not directly exposed to the risk of high capital costs and regulatory uncertainties that face electric utilities that burn fossil fuels to generate electricity. Nevertheless, CenterPoint Houston’s revenues could be adversely affected to the extent any resulting regulatory action has the effect of reducing consumption of electricity by ultimate consumers within its service territory. Likewise, incentives to conserve energy or use energy sources other than natural gas could result in a decrease in demand for our services.

Climate changes could result in more frequent and more severe weather events which could adversely affect the results of operations of our businesses.

To the extent climate changes occur, our businesses may be adversely impacted, though we believe any such impacts are likely to occur very gradually and hence would be difficult to quantify with specificity. To the extent global climate change results in warmer temperatures in our service territories, financial results from our natural gas distribution businesses could be adversely affected through lower gas sales, and our gas transmission and field services businesses could experience lower revenues. Another possible climate change is more frequent and more severe weather events, such as hurricanes or tornadoes. Since many of our facilities are located along or near the Gulf Coast, increased or more severe hurricanes or tornadoes could increase our costs to repair damaged facilities and restore service to our customers. When we cannot deliver electricity or natural gas to customers or our customers cannot receive our services, our financial results can be impacted by lost revenues, and we generally must seek approval from regulators to recover restoration costs. To the extent we are unable to recover those costs, or if higher rates resulting from our recovery of such costs result in reduced demand for our services, our future financial results may be adversely impacted.

## Item 1B. Unresolved Staff Comments

None.



## Item 2. Properties

## Character of Ownership

We lease or own our principal properties in fee, including our corporate office space and various real property. Most of our electric lines and gas mains are located, pursuant to easements and other rights, on public roads or on land owned by others.

## Electric Transmission & Distribution

For information regarding the properties of our Electric Transmission & Distribution business segment, please read “Business — Our Business — Electric Transmission & Distribution — Properties” in Item 1 of this report, which information is incorporated herein by reference.

## Natural Gas Distribution

For information regarding the properties of our Natural Gas Distribution business segment, please read “Business — Our Business — Natural Gas Distribution — Assets” in Item 1 of this report, which information is incorporated herein by reference.

## Competitive Natural Gas Sales and Services

For information regarding the properties of our Competitive Natural Gas Sales and Services business segment, please read “Business — Our Business — Our Business — Competitive Natural Gas Sales and Services — Assets” in Item 1 of this report, which information is incorporated herein by reference.

## Interstate Pipelines

For information regarding the properties of our Interstate Pipelines business segment, please read “Business — Our Business — Interstate Pipelines — Assets” in Item 1 of this report, which information is incorporated herein by reference.

## Field Services

For information regarding the properties of our Field Services business segment, please read “Business — Our Business — Field Services — Assets” in Item 1 of this report, which information is incorporated herein by reference.

## Other Operations

For information regarding the properties of our Other Operations business segment, please read “Business — Our Business — Other Operations” in Item 1 of this report, which information is incorporated herein by reference.

## Item 3. Legal Proceedings

For a discussion of material legal and regulatory proceedings affecting us, please read “Business — Regulation” and “Business — Environmental Matters” in Item 1 of this report, “Management's Discussion and Analysis of Financial Condition and Results of Operations — Liquidity and Capital Resources — Future Sources and Uses of Cash — Regulatory Matters” in Item 7 of this report and Note 13(f) to our consolidated financial statements, which information is incorporated herein by reference.

## Item 4. Mine Safety Disclosures

Not applicable.



## PART II

## Item 5. Market for Registrant's Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities

As of February 14, 2013, our common stock was held by approximately 39,060 shareholders of record. Our common stock is listed on the New York and Chicago Stock Exchanges and is traded under the symbol “CNP.”

The following table sets forth the high and low closing prices of the common stock of CenterPoint Energy on the New York Stock Exchange composite tape during the periods indicated, as reported by Bloomberg, and the cash dividends declared in these periods.

<table><tr><td rowspan="2"></td><td colspan="2">Market Price</td><td rowspan="2">Dividend Declared Per Share</td></tr><tr><td>High</td><td>Low</td></tr><tr><td>2011</td><td></td><td></td><td></td></tr><tr><td>First Quarter</td><td></td><td></td><td>$ 0.1975</td></tr><tr><td>March 17</td><td></td><td>$ 15.20</td><td></td></tr><tr><td>March 30</td><td>$ 17.68</td><td></td><td></td></tr><tr><td>Second Quarter</td><td></td><td></td><td>$ 0.1975</td></tr><tr><td>April 12</td><td></td><td>$ 17.23</td><td></td></tr><tr><td>June 30</td><td>$ 19.35</td><td></td><td></td></tr><tr><td>Third Quarter</td><td></td><td></td><td>$ 0.1975</td></tr><tr><td>July 21</td><td>$ 20.28</td><td></td><td></td></tr><tr><td>August 8</td><td></td><td>$ 17.24</td><td></td></tr><tr><td>Fourth Quarter</td><td></td><td></td><td>$ 0.1975</td></tr><tr><td>October 28</td><td>$ 21.29</td><td></td><td></td></tr><tr><td>November 25</td><td></td><td>$ 18.59</td><td></td></tr><tr><td>2012</td><td></td><td></td><td></td></tr><tr><td>First Quarter</td><td></td><td></td><td>$ 0.2025</td></tr><tr><td>January 3</td><td>$ 19.89</td><td></td><td></td></tr><tr><td>January 27</td><td></td><td>$ 18.23</td><td></td></tr><tr><td>Second Quarter</td><td></td><td></td><td>$ 0.2025</td></tr><tr><td>April 10</td><td></td><td>$ 19.06</td><td></td></tr><tr><td>June 18</td><td>$ 20.71</td><td></td><td></td></tr><tr><td>Third Quarter</td><td></td><td></td><td>$ 0.2025</td></tr><tr><td>August 23</td><td></td><td>$ 20.24</td><td></td></tr><tr><td>September 26</td><td>$ 21.45</td><td></td><td></td></tr><tr><td>Fourth Quarter</td><td></td><td></td><td>$ 0.2025</td></tr><tr><td>October 17</td><td>$ 21.75</td><td></td><td></td></tr><tr><td>December 28</td><td></td><td>$ 19.00</td><td></td></tr></table>

The closing market price of our common stock on December 31, 2012 was $19.25 per share.

The amount of future cash dividends will be subject to determination based upon our results of operations and financial condition, our future business prospects, any applicable contractual restrictions and other factors that our board of directors considers relevant and will be declared at the discretion of the board of directors.

On January 25, 2013, we announced a regular quarterly cash dividend of $0.2075 per share, payable on March 8, 2013 to shareholders of record on February 15, 2013.



During the quarter ended December 31, 2012, none of our equity securities registered pursuant to Section 12 of the Securities Exchange Act of 1934 were purchased by or on behalf of us or any of our “affiliated purchasers,” as defined in Rule 10b-18(a)(3) under the Securities Exchange Act of 1934.

## Item 6. Selected Financial Data

The following table presents selected financial data with respect to our consolidated financial condition and consolidated results of operations and should be read in conjunction with our consolidated financial statements and the related notes in Item 8 of this report.

<table><tr><td rowspan="3"></td><td colspan="7">Year Ended December 31,</td></tr><tr><td>2008(1)</td><td>2009</td><td>2010</td><td>2011 (2)</td><td>2012</td><td></td><td></td></tr><tr><td colspan="6">(in millions, except per share amounts)</td></tr><tr><td>Revenues</td><td>$ 11,322</td><td>$ 8,281</td><td>$ 8,785</td><td>$ 8,450</td><td>$ 7,452</td><td></td><td></td></tr><tr><td>Income before Extraordinary Item</td><td>446</td><td>372</td><td>442</td><td>770</td><td>417</td><td></td><td></td></tr><tr><td>Extraordinary Item, net of tax</td><td>—</td><td>—</td><td>—</td><td>587</td><td>—</td><td></td><td></td></tr><tr><td>Net income</td><td>$ 446</td><td>$ 372</td><td>$ 442</td><td>$ 1,357</td><td>$ 417</td><td></td><td></td></tr><tr><td>Basic earnings per common share:</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Income before Extraordinary Item</td><td>$ 1.32</td><td>$ 1.02</td><td>$ 1.08</td><td>$ 1.81</td><td>$ 0.98</td><td></td><td></td></tr><tr><td>Extraordinary Item, net of tax</td><td>—</td><td>—</td><td>—</td><td>1.38</td><td>—</td><td></td><td></td></tr><tr><td>Basic earnings per common share</td><td>$ 1.32</td><td>$ 1.02</td><td>$ 1.08</td><td>$ 3.19</td><td>$ 0.98</td><td></td><td></td></tr><tr><td>Diluted earnings per common share:</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Income before Extraordinary Item</td><td>$ 1.30</td><td>$ 1.01</td><td>$ 1.07</td><td>$ 1.80</td><td>$ 0.97</td><td></td><td></td></tr><tr><td>Extraordinary Item, net of tax</td><td>—</td><td>—</td><td>—</td><td>1.37</td><td>—</td><td></td><td></td></tr><tr><td>Diluted earnings per common share</td><td>$ 1.30</td><td>$ 1.01</td><td>$ 1.07</td><td>$ 3.17</td><td>$ 0.97</td><td></td><td></td></tr><tr><td>Cash dividends declared per common share</td><td>$ 0.73</td><td>$ 0.76</td><td>$ 0.78</td><td>$ 0.79</td><td>$ 0.81</td><td></td><td></td></tr><tr><td>Dividend payout ratio</td><td>55%</td><td>75%</td><td>72%</td><td>44%</td><td>(3)</td><td>83%</td><td></td></tr><tr><td>Return on average common equity</td><td>23%</td><td>16%</td><td>15%</td><td>21%</td><td>(3)</td><td>10%</td><td></td></tr><tr><td>Ratio of earnings to fixed charges</td><td>2.05</td><td>1.82</td><td>2.08</td><td>2.96</td><td>(3)</td><td>2.29</td><td></td></tr><tr><td>At year-end:</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Book value per common share</td><td>$ 5.84</td><td>$ 6.74</td><td>$ 7.53</td><td>$ 9.91</td><td>$ 10.09</td><td></td><td></td></tr><tr><td>Market price per common share</td><td>12.62</td><td>14.51</td><td>15.72</td><td>20.09</td><td>19.25</td><td></td><td></td></tr><tr><td>Market price as a percent of book value</td><td>216%</td><td>215%</td><td>209%</td><td>203%</td><td>191%</td><td></td><td></td></tr><tr><td>Total assets</td><td>$ 19,676</td><td>$ 19,773</td><td>$ 20,111</td><td>$ 21,703</td><td>$ 22,871</td><td></td><td></td></tr><tr><td>Short-term borrowings</td><td>153</td><td>55</td><td>53</td><td>62</td><td>38</td><td></td><td></td></tr><tr><td>Transition and system restoration bonds, including current maturities</td><td>2,589</td><td>3,046</td><td>2,805</td><td>2,522</td><td>3,847</td><td></td><td></td></tr><tr><td>Other long-term debt, including current maturities</td><td>7,925</td><td>6,976</td><td>6,624</td><td>6,603</td><td>5,910</td><td></td><td></td></tr><tr><td>Capitalization:</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Common stock equity</td><td>16%</td><td>21%</td><td>25%</td><td>32%</td><td>31%</td><td></td><td></td></tr><tr><td>Long-term debt, including current maturities</td><td>84%</td><td>79%</td><td>75%</td><td>68%</td><td>69%</td><td></td><td></td></tr><tr><td>Capitalization, excluding transition and system restoration bonds:</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Common stock equity</td><td>20%</td><td>27%</td><td>33%</td><td>39%</td><td>42%</td><td></td><td></td></tr><tr><td>Long-term debt, excluding transition and system restoration bonds, and including current maturities</td><td>80%</td><td>73%</td><td>67%</td><td>61%</td><td>58%</td><td></td><td></td></tr><tr><td>Capital expenditures</td><td>$ 1,053</td><td>$ 1,148</td><td>$ 1,462</td><td>$ 1,191</td><td>$ 1,188</td><td></td><td></td></tr></table>

(1) Net income has been retrospectively adjusted by $1 million for the year ended 2008 to reflect the adoption of new accounting guidance as of January 1, 2009 for convertible debt instruments that may be settled in cash upon conversion.

(2) 2011 Income before Extraordinary Item includes a $224 million after-tax ($0.53 and $0.52 per basic and diluted share, respectively) return on true-up balance related to a portion of interest on the appealed true-up amount.

(3) Calculated using Income before Extraordinary Item.



## Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations

The following discussion and analysis should be read in combination with our consolidated financial statements included in Item 8 herein.

## OVERVIEW

## Background

We are a public utility holding company whose indirect wholly owned subsidiaries include:

- CenterPoint Energy Houston Electric, LLC (CenterPoint Houston), which engages in the electric transmission and distribution business in a 5,000-square mile area of the Texas Gulf Coast that includes the city of Houston; and

- CenterPoint Energy Resources Corp. (CERC Corp. and, together with its subsidiaries, CERC), which owns and operates natural gas distribution systems in six states. Subsidiaries of CERC Corp. own interstate natural gas pipelines and gas gathering systems and provide various ancillary services. A wholly owned subsidiary of CERC Corp. offers variable and fixed-price physical natural gas supplies primarily to commercial and industrial customers and electric and gas utilities.

## Business Segments

In this Management’s Discussion and Analysis, we discuss our results from continuing operations on a consolidated basis and individually for each of our business segments. We also discuss our liquidity, capital resources and certain critical accounting policies. We are first and foremost an energy delivery company and it is our intention to remain focused on this segment of the energy business. The results of our business operations are significantly impacted by weather, customer growth, economic conditions, cost management, competition, rate proceedings before regulatory agencies and other actions of the various regulatory agencies to whose jurisdiction we are subject. Our electric transmission and distribution services are subject to rate regulation and are reported in the Electric Transmission & Distribution business segment, as are impacts of generation-related stranded costs and other true-up balances recoverable by the regulated electric utility. Our natural gas distribution services are also subject to rate regulation and are reported in the Natural Gas Distribution business segment. A summary of our reportable business segments as of December 31, 2012 is set forth below:

## Electric Transmission & Distribution

Our electric transmission and distribution operations provide electric transmission and distribution services to retail electric providers (REPs) serving over two million metered customers in a 5,000-square-mile area of the Texas Gulf Coast that has a population of approximately six million people and includes the city of Houston.

On behalf of REPs, CenterPoint Houston delivers electricity from power plants to substations, from one substation to another and to retail electric customers in locations throughout CenterPoint Houston’s certificated service territory. The Electric Reliability Council of Texas, Inc. (ERCOT) serves as the regional reliability coordinating council for member electric power systems in Texas. ERCOT membership is open to consumer groups, investor and municipally-owned electric utilities, rural electric cooperatives, independent generators, power marketers, river authorities and REPs. The ERCOT market represents approximately 85% of the demand for power in Texas and is one of the nation’s largest power markets. Transmission and distribution services are provided under tariffs approved by the Public Utility Commission of Texas (Texas Utility Commission).

## Natural Gas Distribution

CERC owns and operates our regulated natural gas distribution business (Gas Operations), which engages in intrastate natural gas sales to, and natural gas transportation for, approximately 3.3 million residential, commercial and industrial customers in Arkansas, Louisiana, Minnesota, Mississippi, Oklahoma and Texas.

## Competitive Natural Gas Sales and Services

CERC’s operations also include non-rate regulated natural gas sales to, and transportation services for, commercial and industrial customers in 21 states in the central and eastern regions of the United States.



CERC’s interstate pipelines business owns and operates approximately 8,000 miles of natural gas transmission lines primarily located in Arkansas, Illinois, Louisiana, Missouri, Oklahoma and Texas. It also owns and operates six natural gas storage fields with a combined daily deliverability of approximately 1.3 billion cubic feet (Bcf) and a combined working gas capacity of approximately 59 Bcf. It owns a 50% interest in Southeast Supply Header, LLC (SESH). SESH owns a 1.0 Bcf per day, 274-mile interstate pipeline that runs from the Perryville Hub in Louisiana to Coden, Alabama. Most storage operations are in north Louisiana and Oklahoma.

## Field Services

CERC’s field services business owns and operates approximately 4,600 miles of gathering pipelines and processing plants that collect, treat and process natural gas primarily from three regions located in major producing fields in Arkansas, Louisiana, Oklahoma and Texas.

## Other Operations

Our other operations business segment includes office buildings and other real estate used in our business operations and other corporate operations which support all of our business operations.

## EXECUTIVE SUMMARY

## Factors Influencing Our Business

We are an energy delivery company. The majority of our revenues are generated from the gathering, processing, transportation and sale of natural gas and the transmission and delivery of electricity by our subsidiaries. We do not own or operate electric generating facilities or make retail sales to end-use electric customers. To assess our financial performance, our management primarily monitors operating income and cash flows from our business segments. Within these broader financial measures, we monitor margins, operation and maintenance expense, interest expense, capital spending and working capital requirements. In addition to these financial measures we also monitor a number of variables that management considers important to the operation of our business segments, including the number of customers, throughput, use per customer, commodity prices and heating and cooling degree days. We also monitor system reliability, safety factors and customer satisfaction to gauge our performance.

To the extent adverse economic conditions affect our suppliers and customers, results from our energy delivery businesses may suffer. Reduced demand and lower energy prices could lead to financial pressure on some of our customers who operate within the energy industry. Also, adverse economic conditions, coupled with concerns for protecting the environment, may cause consumers to use less energy or avoid expansions of their facilities, resulting in less demand for our services.

Performance of our Electric Transmission & Distribution and Natural Gas Distribution business segments is significantly influenced by the number of customers and energy usage per customer. Weather conditions can have a significant impact on energy usage, and we compare our results on a weather adjusted basis. The Houston area experienced extremely hot and dry weather during 2011, and each month from April through September was one of the ten warmest months on record. In 2012, we experienced a return to more normal weather in the summer months. However, every state in which we distribute natural gas had the warmest winter on record. In recent years, customers have typically reduced their energy consumption, and reduced consumption can adversely affect our results. However, due to more affordable energy prices and continued economic recovery in the areas we serve, the trend toward lower usage has slowed in some of the areas we serve. In addition, in many of our service areas, particularly in the Houston area and in Minnesota, we have benefited from growth in the number of customers that also tends to mitigate the effects of reduced consumption. We anticipate that this growth will continue as the regions experience a continued economic recovery. The profitability of our businesses is influenced significantly by the regulatory treatment we receive from the various state and local regulators who set our electric and gas distribution rates. In recent rate filings, we have sought rate mechanisms that help to decouple our results from the impacts of weather and variations in usage from levels reflected in rates, but such rate mechanisms have not yet been approved in all jurisdictions. We plan to continue to pursue such decoupling mechanisms in our future rate filings.

Our Field Services and Interstate Pipelines business segments are currently benefiting from their proximity to significant natural gas producing regions in Texas, Arkansas, Oklahoma and Louisiana. In our Field Services business segment, the development of shale formations has helped offset declines in production from more traditional basins. The recent decline in natural gas prices has contributed to reductions in drilling activity in dry gas shale formations as well, including those served by our Field Services business segment. Many producers have shifted their focus to liquids-rich natural gas or crude oil basins. A



reduction in drilling activity may result in lower throughput volumes on our systems as the wells decline over time. However, a significant amount of the volumes gathered by systems we recently developed in shale basins such as the Haynesville and Fayetteville shales are supported by contracts with annual volume commitments, or price adjustment mechanisms that provide for minimum returns on capital deployed. In monitoring performance of the segments, we focus on throughput of the pipelines and gathering systems, and in the case of Field Services, on the number of well-connects.

Our Competitive Natural Gas Sales and Services business segment contracts with customers for transportation, storage and sales of natural gas on an unregulated basis. Its operations serve customers in the central and eastern regions of the United States. The segment benefits from favorable price differentials, either on a geographic basis or on a seasonal basis. While this business utilizes financial derivatives to hedge its exposure to price movements, it does not engage in speculative or proprietary trading and maintains a low value at risk level, or VaR, to avoid significant financial exposures. Lower geographic and seasonal price differentials during 2010, 2011 and 2012 adversely affected results for this business segment.

The nature of our businesses requires significant amounts of capital investment, and we rely on internally generated cash, borrowings under our credit facilities, proceeds from commercial paper and issuances of debt and equity in the capital markets to satisfy these capital needs. We strive to maintain investment grade ratings for our securities in order to access the capital markets on terms we consider reasonable. Our goal is to continue to improve our credit ratings over time. A reduction in our ratings generally would increase our borrowing costs for new issuances of debt, as well as borrowing costs under our existing revolving credit facilities, and may prevent us from accessing the commercial paper markets. Disruptions in the financial markets can also affect the availability of new capital on terms we consider attractive. In those circumstances, companies like us may not be able to obtain certain types of external financing or may be required to accept terms less favorable than they would otherwise accept. For that reason, we seek to maintain adequate liquidity for our businesses through existing credit facilities and prudent refinancing of existing debt.

We expect to make contributions to our pension plan aggregating approximately $83 million in 2013 and may need to make larger contributions in subsequent years. Consistent with the regulatory treatment of such costs, we can defer the amount of pension expense that differs from the level of pension expense included in our base rates for our Electric Transmission & Distribution business segment and our Gas Operations in Texas.

## Significant Events

## Acquisition

On July 31, 2012, we purchased the 50% interest that we did not already own in Waskom Gas Processing Company (Waskom), a Texas general partnership, which owns and operates a natural gas processing plant and natural gas gathering assets, as well as other gathering and related assets from a third-party for approximately $273 million. The amount of the purchase price allocated to the acquisition of the 50% interest in Waskom was approximately $201 million, with the remaining purchase price allocated to the other gathering assets, based on a discounted cash flow methodology. The purchase of the 50% interest in Waskom was determined to be a business combination achieved in stages, and as such we recorded a pre-tax gain of approximately $136 million on July 31, 2012, which is the result of remeasuring our original 50% interest in Waskom to fair value. As a result of the purchase, we recorded goodwill of $24 million, which includes $17 million related to Waskom (including the re-measurement of our existing 50% interest) and $7 million related to the other gathering and related assets.

## Goodwill Impairment

We performed our annual impairment test in the third quarter of 2012 and determined that a non-cash goodwill impairment charge in the amount of $252 million was required for the Competitive Natural Gas Sales and Services reportable segment. We also determined that no impairment charge was required for any other reportable segment. The adverse wholesale market conditions facing our energy services business, specifically the prospects for continued low geographic and seasonal price differentials for natural gas, led to a reduction in the estimate of the fair value of goodwill associated with this reporting unit.

## Debt Financing Transactions

In January 2012, CenterPoint Energy Transition Bond Company IV, LLC (Bond Company IV) issued $1.695 billion of transition bonds in three tranches with interest rates ranging from 0.9012% to 3.0282% and final maturity dates ranging from April 15, 2018 to October 15, 2025. Through the issuance of these transition bonds, CenterPoint Houston recovered the additional true-up balance of $1.695 billion, less approximately $10.4 million of offering expenses. The transition bonds will be repaid through a charge imposed on customers in CenterPoint Houston’s service territory.



In February 2012, we purchased $275 million aggregate principal amount of pollution control bonds issued on our behalf at 100% of their principal amount plus accrued interest pursuant to the mandatory tender provisions of the bonds. The purchased pollution control bonds will remain outstanding and may be re-marketed. Prior to the purchase, the pollution control bonds had fixed interest rates ranging from 5.15% to 5.95%. Additionally, in March 2012, we redeemed $100 million aggregate principal amount of pollution control bonds issued on our behalf at 100% of their principal amount plus accrued interest pursuant to the optional redemption provisions of the bonds. The redeemed pollution control bonds had a fixed interest rate of 5.25%.

In August 2012, CenterPoint Houston issued $300 million of 2.25% general mortgage bonds due 2022 and $500 million of 3.55% general mortgage bonds due 2042. The net proceeds from the sale of the bonds were used to fund a portion of the redemption of the general mortgage bonds discussed below.

In August 2012, CenterPoint Houston redeemed $300 million principal amount of its 5.75% general mortgage bonds due 2014 at a price of 107.332% of their principal amount and $500 million principal amount of its 7.00% general mortgage bonds due 2014 at a price of 109.397% of their principal amount. Redemption premiums for the two series aggregated approximately $69 million.

## CERTAIN FACTORS AFFECTING FUTURE EARNINGS

Our past earnings and results of operations are not necessarily indicative of our future earnings and results of operations. The magnitude of our future earnings and results of our operations will depend on or be affected by numerous factors including:

- state and federal legislative and regulatory actions or developments affecting various aspects of our businesses, including, among others, energy deregulation or re-regulation, pipeline integrity and safety, health care reform, financial reform, tax legislation and actions regarding the rates charged by our regulated businesses;

- state and federal legislative and regulatory actions or developments relating to the environment, including those related to global climate change;

• timely and appropriate rate actions that allow recovery of costs and a reasonable return on investment;

• the timing and outcome of any audits, disputes and other proceedings related to taxes;

- problems with construction, implementation of necessary technology or other issues with respect to major capital projects that result in delays or in cost overruns that cannot be recouped in rates;

- industrial, commercial and residential growth in our service territory and changes in market demand, including the effects of energy efficiency measures and demographic patterns;

- the timing and extent of changes in commodity prices, particularly natural gas and natural gas liquids, the competitive effects of excess pipeline capacity in the regions we serve, and the effects of geographic and seasonal commodity price differentials, including the effects of these circumstances on re-contracting available capacity on our interstate pipelines;

- the timing and extent of changes in the supply of natural gas, particularly supplies available for gathering by our field services business and transporting by our interstate pipelines, including the impact of natural gas and natural gas liquids prices on the level of drilling and production activities in the regions we serve;

• competition in our mid-continent region footprint for access to natural gas supplies and markets;

• weather variations and other natural phenomena, including the impact on operations and capital of severe weather events;

- any direct or indirect effects on our facilities, operations and financial condition resulting from terrorism, cyber-attacks, data security breaches or other attempts to disrupt our businesses or the businesses of third parties, or other catastrophic events;

• the impact of unplanned facility outages;

- timely and appropriate regulatory actions allowing securitization or other recovery of costs associated with any future hurricanes or natural disasters;



• changes in interest rates or rates of inflation;

• commercial bank and financial market conditions, our access to capital, the cost of such capital, and the results of our financing and refinancing efforts, including availability of funds in the debt capital markets;

• actions by credit rating agencies;

• effectiveness of our risk management activities;

• inability of various counterparties to meet their obligations to us;

• non-payment for our services due to financial distress of our customers;

- the ability of GenOn Energy, Inc. (GenOn) (formerly known as RRI Energy, Inc., Reliant Energy, Inc. and Reliant Resources, Inc. (RRI)), a wholly owned subsidiary of NRG Energy, Inc. (NRG), and its subsidiaries to satisfy their obligations to us, including indemnity obligations, or obligations in connection with the contractual arrangements pursuant to which we are their guarantor;

- the ability of REPs, including REP affiliates of NRG and Energy Future Holdings Corp. (Energy Future Holdings), which are CenterPoint Houston’s two largest customers, to satisfy their obligations to us and our subsidiaries;

• the outcome of litigation brought by or against us;

• our ability to control costs;

• the investment performance of our pension and postretirement benefit plans;

- our potential business strategies, including restructurings, joint ventures, and acquisitions or dispositions of assets or businesses, which we cannot assure you will be completed or will have the anticipated benefits to us;

• acquisition and merger activities involving us or our competitors;

• future economic conditions in regional and national markets and their effect on sales, prices and costs; and

- other factors we discuss under “Risk Factors” in Item 1A of this report and in other reports we file from time to time with the SEC.



## CONSOLIDATED RESULTS OF OPERATIONS

All dollar amounts in the tables that follow are in millions, except for per share amounts.

<table><tr><td rowspan="2"></td><td colspan="4">Year Ended December 31,</td></tr><tr><td>2010</td><td colspan="2">2011</td><td>2012</td></tr><tr><td>Revenues</td><td>$ 8,785</td><td>$ 8,450</td><td>$ 7,452</td><td></td></tr><tr><td>Expenses</td><td>7,536</td><td>7,152</td><td>6,414</td><td></td></tr><tr><td>Operating Income</td><td>1,249</td><td>1,298</td><td>1,038</td><td></td></tr><tr><td>Gain on Marketable Securities</td><td>67</td><td>19</td><td>154</td><td></td></tr><tr><td>Gain (Loss) on Indexed Debt Securities</td><td>(31)</td><td>35</td><td>(71)</td><td></td></tr><tr><td>Interest and Other Finance Charges</td><td>(481)</td><td>(456)</td><td>(422)</td><td></td></tr><tr><td>Interest on Transition and System Restoration Bonds</td><td>(140)</td><td>(127)</td><td>(147)</td><td></td></tr><tr><td>Equity in Earnings of Unconsolidated Affiliates</td><td>29</td><td>30</td><td>31</td><td></td></tr><tr><td>Return on True-Up Balance</td><td>—</td><td>352</td><td>—</td><td></td></tr><tr><td>Step acquisition gain</td><td>—</td><td>—</td><td>136</td><td></td></tr><tr><td>Other Income, net</td><td>12</td><td>23</td><td>38</td><td></td></tr><tr><td>Income Before Income Taxes and Extraordinary Item</td><td>705</td><td>1,174</td><td>757</td><td></td></tr><tr><td>Income Tax Expense</td><td>263</td><td>404</td><td>340</td><td></td></tr><tr><td>Income Before Extraordinary Item</td><td>442</td><td>770</td><td>417</td><td></td></tr><tr><td>Extraordinary Item, net of tax</td><td>—</td><td>587</td><td>—</td><td></td></tr><tr><td>Net Income</td><td>$ 442</td><td>$ 1,357</td><td>$ 417</td><td></td></tr><tr><td>Basic Earnings Per Share:</td><td></td><td></td><td></td><td></td></tr><tr><td>Income Before Extraordinary Item</td><td>$ 1.08</td><td>$ 1.81</td><td>$ 0.98</td><td></td></tr><tr><td>Extraordinary Item, net of tax</td><td>—</td><td>1.38</td><td>—</td><td></td></tr><tr><td>Net Income</td><td>$ 1.08</td><td>$ 3.19</td><td>$ 0.98</td><td></td></tr><tr><td>Diluted Earnings Per Share:</td><td></td><td></td><td></td><td></td></tr><tr><td>Income Before Extraordinary Item</td><td>$ 1.07</td><td>$ 1.80</td><td>$ 0.97</td><td></td></tr><tr><td>Extraordinary Item, net of tax</td><td>—</td><td>1.37</td><td>—</td><td></td></tr><tr><td>Net Income</td><td>$ 1.07</td><td>$ 3.17</td><td>$ 0.97</td><td></td></tr></table>

## 2012 Compared to 2011

Net Income. We reported net income of $417 million ($0.97 per diluted share) for 2012 compared to $1.357 billion ($3.17 per diluted share) for the same period in 2011. The decrease in net income of $940 million was primarily due to the resolution in 2011 of the true-up appeal resulting in an after-tax extraordinary gain of $587 million and a $352 million return on the true-up balance, a $260 million decrease in operating income (discussed by segment below), including a $252 million non-cash goodwill impairment charge, and a $106 million increase in the loss on our indexed debt securities, which were partially offset by a $136 million step acquisition gain related to the acquisition of an additional 50% interest in Waskom, a $135 million increase in the gain on our marketable securities, a $64 million decrease in income tax expense and a $14 million decrease in interest expense due to lower levels of debt.

Income Tax Expense. We reported an effective tax rate of 44.9% for 2012 compared to 34.4% for the same period in 2011. The increase in the effective tax rate of 10.5% is due to goodwill impairment of $252 million which is non-deductible for tax purposes. It is partially offset by favorable tax adjustments, including the re-measurement of certain unrecognized tax benefits of $28 million related to the Internal Revenue Service (IRS) settlement of tax years 2006 through 2009.



Net Income. We reported net income of $1.357 billion ($3.17 per diluted share) for 2011 compared to $442 million ($1.07 per diluted share) for the same period in 2010. The increase in net income of $915 million was primarily due to the resolution of the true-up appeal resulting in an after-tax extraordinary gain of $587 million and a $352 million return on the true-up balance, a $66 million increase in the gain on our indexed debt securities, a $49 million increase in operating income and a $38 million decrease in interest expense due to lower levels of debt, which were partially offset by a $141 million increase in income tax expense and a $48 million decrease in the gain on our marketable securities.

Income Tax Expense. We reported an effective tax rate of 34.4% for 2011 compared to 37.3% for the same period in 2010. The decrease in the effective tax rate of 2.9% is due to an $18 million reduction to the uncertain tax liability primarily related to the resolution of the tax normalization issue, a $21 million reduction to the deferred tax asset due to the enactment of the Patient Protection and Affordable Care Act and Health Care and Education Reconciliation Act recognized in 2010, a $24 million decrease to state tax expense due to the restructuring of certain subsidiaries in December 2010, and a $17 million state tax benefit primarily attributable to lower blended state tax rates and a reduction to the state deferred tax liability recorded in December 2011.

## RESULTS OF OPERATIONS BY BUSINESS SEGMENT

The following table presents operating income (loss) (in millions) for each of our business segments for 2010, 2011 and 2012. Included in revenues are intersegment sales. We account for intersegment sales as if the sales were to third parties, that is, at current market prices.

## Operating Income (Loss) by Business Segment

<table><tr><td rowspan="2"></td><td colspan="4">Year Ended December 31,</td></tr><tr><td>2010</td><td>2011</td><td>2012</td><td></td></tr><tr><td>Electric Transmission &amp; Distribution</td><td>$ 567</td><td>$ 623</td><td>$ 639</td><td></td></tr><tr><td>Natural Gas Distribution</td><td>231</td><td>226</td><td>226</td><td></td></tr><tr><td>Competitive Natural Gas Sales and Services</td><td>16</td><td>6</td><td>(250)</td><td></td></tr><tr><td>Interstate Pipelines</td><td>270</td><td>248</td><td>207</td><td></td></tr><tr><td>Field Services</td><td>151</td><td>189</td><td>214</td><td></td></tr><tr><td>Other Operations</td><td>14</td><td>6</td><td>2</td><td></td></tr><tr><td>Total Consolidated Operating Income</td><td>$ 1,249</td><td>$ 1,298</td><td>$ 1,038</td><td></td></tr></table>



## Electric Transmission & Distribution

The following tables provide summary data of our Electric Transmission & Distribution business segment, CenterPoint Houston, for 2010, 2011 and 2012 (in millions, except throughput and customer data):

<table><tr><td rowspan="2"></td><td colspan="4">Year Ended December 31,</td></tr><tr><td>2010</td><td colspan="2">2011</td><td>2012</td></tr><tr><td>Revenues:</td><td></td><td></td><td></td><td></td></tr><tr><td>Electric transmission and distribution utility</td><td>$     1,768</td><td>$     1,893</td><td>$     1,949</td><td></td></tr><tr><td>Transition and system restoration bond companies</td><td>437</td><td>444</td><td>591</td><td></td></tr><tr><td>Total revenues</td><td>2,205</td><td>2,337</td><td>2,540</td><td></td></tr><tr><td>Expenses:</td><td></td><td></td><td></td><td></td></tr><tr><td>Operation and maintenance, excluding transition and system restoration bond companies</td><td>841</td><td>908</td><td>942</td><td></td></tr><tr><td>Depreciation and amortization, excluding transition and system restoration bond companies</td><td>293</td><td>279</td><td>301</td><td></td></tr><tr><td>Taxes other than income taxes</td><td>207</td><td>210</td><td>214</td><td></td></tr><tr><td>Transition and system restoration bond companies</td><td>297</td><td>317</td><td>444</td><td></td></tr><tr><td>Total expenses</td><td>1,638</td><td>1,714</td><td>1,901</td><td></td></tr><tr><td>Operating Income</td><td>$     567</td><td>$     623</td><td>$     639</td><td></td></tr><tr><td>Operating Income:</td><td></td><td></td><td></td><td></td></tr><tr><td>Electric transmission and distribution operations</td><td>$     427</td><td>$     496</td><td>$     492</td><td></td></tr><tr><td>Transition and system restoration bond companies (1)</td><td>140</td><td>127</td><td>147</td><td></td></tr><tr><td>Total segment operating income</td><td>$     567</td><td>$     623</td><td>$     639</td><td></td></tr><tr><td>Throughput (in gigawatt-hours (GWh)):</td><td></td><td></td><td></td><td></td></tr><tr><td>Residential</td><td>26,554</td><td>28,511</td><td>27,315</td><td></td></tr><tr><td>Total</td><td>76,973</td><td>80,013</td><td>78,593</td><td></td></tr><tr><td>Number of metered customers at end of period:</td><td></td><td></td><td></td><td></td></tr><tr><td>Residential</td><td>1,867,251</td><td>1,904,818</td><td>1,943,423</td><td></td></tr><tr><td>Total</td><td>2,110,608</td><td>2,155,710</td><td>2,199,764</td><td></td></tr></table>

(1) Represents the amount necessary to pay interest on the transition and system restoration bonds.

2012 Compared to 2011. Our Electric Transmission & Distribution business segment reported operating income of $639 million for 2012, consisting of $492 million from our regulated electric transmission and distribution utility operations (TDU) and $147 million related to transition and system restoration bond companies. For 2011, operating income totaled $623 million, consisting of $496 million from the TDU and $127 million related to transition and system restoration bond companies. TDU operating income decreased $4 million due to decreased usage ($54 million), primarily due to a return to more normal summer weather when compared to the previous year, and the impact of the 2010 rate case implemented in September 2011 ($34 million), partially offset by higher equity returns ($28 million) primarily related to true-up proceeds, increased miscellaneous revenues ($24 million), primarily from right-of-way easement grants, customer growth ($24 million) from the addition of over 44,000 new customers and decreased labor and benefits costs ($6 million).

2011 Compared to 2010. Our Electric Transmission & Distribution business segment reported operating income of $623 million for 2011, consisting of $496 million from our TDU and $127 million related to transition and system restoration bond companies. For 2010, operating income totaled $567 million, consisting of $427 million from the TDU and $140 million related to transition and system restoration bond companies. TDU operating income increased $69 million due to increased usage ($51 million), primarily due to favorable weather, customer growth ($22 million) from the addition of over 45,000 new customers, lower depreciation expense ($16 million) and higher transmission-related revenues net of the costs billed by transmission providers ($13 million), partially offset by the impact of the 2010 rate case implemented in September 2011 ($12 million) and other operating expense increases ($12 million).



## Natural Gas Distribution

The following table provides summary data of our Natural Gas Distribution business segment for 2010, 2011 and 2012 (in millions, except throughput and customer data):

<table><tr><td rowspan="2"></td><td colspan="4">Year Ended December 31,</td></tr><tr><td>2010</td><td colspan="2">2011</td><td>2012</td></tr><tr><td>Revenues</td><td>$ 3,213</td><td>$ 2,841</td><td>$ 2,342</td><td></td></tr><tr><td>Expenses:</td><td></td><td></td><td></td><td></td></tr><tr><td>Natural gas</td><td>2,049</td><td>1,675</td><td>1,196</td><td></td></tr><tr><td>Operation and maintenance</td><td>639</td><td>655</td><td>637</td><td></td></tr><tr><td>Depreciation and amortization</td><td>166</td><td>166</td><td>173</td><td></td></tr><tr><td>Taxes other than income taxes</td><td>128</td><td>119</td><td>110</td><td></td></tr><tr><td>Total expenses</td><td>2,982</td><td>2,615</td><td>2,116</td><td></td></tr><tr><td>Operating Income</td><td>$ 231</td><td>$ 226</td><td>$ 226</td><td></td></tr><tr><td>Throughput (in Bcf):</td><td></td><td></td><td></td><td></td></tr><tr><td>Residential</td><td>177</td><td>172</td><td>140</td><td></td></tr><tr><td>Commercial and industrial</td><td>249</td><td>251</td><td>243</td><td></td></tr><tr><td>Total Throughput</td><td>426</td><td>423</td><td>383</td><td></td></tr><tr><td>Number of customers at end of period:</td><td></td><td></td><td></td><td></td></tr><tr><td>Residential</td><td>3,016,333</td><td>3,036,267</td><td>3,058,695</td><td></td></tr><tr><td>Commercial and industrial</td><td>246,891</td><td>246,220</td><td>246,413</td><td></td></tr><tr><td>Total</td><td>3,263,224</td><td>3,282,487</td><td>3,305,108</td><td></td></tr></table>

2012 Compared to 2011. Our Natural Gas Distribution business segment reported operating income of $226 million for each of 2012 and 2011. Operating income was unchanged despite substantially reduced revenues from near record mild temperatures in the first quarter of 2012 that were partially mitigated by weather hedges and weather normalization adjustments ($21 million), increased depreciation and amortization expense ($7 million) and increased property taxes ($4 million). These adverse impacts were offset by certain reduced operation and maintenance expenses ($5 million), lower bad debt expense ($7 million), the addition of over 22,000 customers ($6 million) and rate increases ($12 million). Decreased expense related to energy efficiency programs ($4 million) and decreased expense related to lower gross receipts taxes ($12 million) were offset by a corresponding reduction in the related revenues.

2011 Compared to 2010. Our Natural Gas Distribution business segment reported operating income of $226 million for 2011 compared to $231 million for 2010. Operating income decreased $5 million primarily as a result of higher benefit costs ($8 million), lower miscellaneous revenues ($7 million) and higher other expenses ($9 million). These were partially offset by the addition of 19,000 customers ($5 million), lower bad debt expense ($8 million) and rate increases ($7 million). Increased expense related to energy efficiency programs ($19 million) and decreased expense related to lower gross receipt taxes ($10 million) were offset by the related revenues.



## Competitive Natural Gas Sales and Services

The following table provides summary data of our Competitive Natural Gas Sales and Services business segment for 2010, 2011 and 2012 (in millions, except throughput and customer data):

<table><tr><td rowspan="2"></td><td colspan="4">Year Ended December 31,</td></tr><tr><td>2010</td><td>2011</td><td>2012</td><td></td></tr><tr><td>Revenues</td><td>$ 2,651</td><td>$ 2,511</td><td>$ 1,784</td><td></td></tr><tr><td>Expenses:</td><td></td><td></td><td></td><td></td></tr><tr><td>Natural gas</td><td>2,591</td><td>2,458</td><td>1,730</td><td></td></tr><tr><td>Operation and maintenance</td><td>38</td><td>41</td><td>45</td><td></td></tr><tr><td>Depreciation and amortization</td><td>4</td><td>5</td><td>6</td><td></td></tr><tr><td>Taxes other than income taxes</td><td>2</td><td>1</td><td>1</td><td></td></tr><tr><td>Goodwill impairment</td><td>—</td><td>—</td><td>252</td><td></td></tr><tr><td>Total expenses</td><td>2,635</td><td>2,505</td><td>2,034</td><td></td></tr><tr><td>Operating Income (Loss)</td><td>$ 16</td><td>$ 6</td><td>$ (250)</td><td></td></tr><tr><td>Throughput (in Bcf)</td><td>548</td><td>558</td><td>562</td><td></td></tr><tr><td>Number of customers at end of period (1)</td><td>12,193</td><td>14,267</td><td>16,330</td><td></td></tr></table>

(1) These numbers do not include approximately 12,700 natural gas customers as of December 31, 2012 that are under residential and small commercial choice programs invoiced by their host utility.

2012 Compared to 2011. Our Competitive Natural Gas Sales and Services business segment reported operating income, excluding the goodwill impairment discussed below, of $2 million for 2012 compared to $6 million for 2011. The decrease in operating income of $4 million was primarily due to a $24 million negative impact of mark-to-market accounting for derivatives associated with certain forward natural gas purchases and sales used to lock in economic margins. 2012 included mark-to-market charges of $16 million compared to a $8 million benefit for the same period of 2011. Substantially offsetting this decrease was a $20 million improvement in operating margins primarily as a result of the termination of uneconomic transportation contracts and an increase in retail sales customers and volumes.

2011 Compared to 2010. Our Competitive Natural Gas Sales and Services business segment reported operating income of $6 million for 2011 compared to $16 million for 2010. The decrease in operating income of $10 million was primarily due to reduced basis spreads on pipeline transport opportunities and decreased seasonal storage spreads of $9 million in 2011, which included a $5 million charge related to an early capacity release on pipeline transportation, as compared to 2010. Additionally, an $11 million write-down of natural gas inventory to the lower of cost or market occurred in 2011 as compared to a $6 million write-down in 2010. Offsetting these decreases to operating income is an increase in operating income of $4 million related to the favorable impact of the mark-to-market valuation for non-trading financial derivatives for 2011 of $8 million versus the favorable impact of $4 million for 2010.

## Goodwill Impairment

A non-cash goodwill impairment charge of $252 million for our Competitive Natural Gas Sales and Services business segment was recorded in 2012. The adverse wholesale market conditions facing our energy services business, specifically the prospects for continued low geographic and seasonal price differentials for natural gas, led to a reduction in our estimate of the fair value of goodwill associated with this reporting unit. See Note 4 to our consolidated financial statements for further discussion of the goodwill impairment charge.



## Interstate Pipelines

The following table provides summary data of our Interstate Pipelines business segment for 2010, 2011 and 2012 (in millions, except throughput data):

<table><tr><td rowspan="2"></td><td colspan="4">Year Ended December 31,</td></tr><tr><td>2010</td><td colspan="2">2011</td><td>2012</td></tr><tr><td>Revenues</td><td>$ 601</td><td>$ 553</td><td>$ 502</td><td></td></tr><tr><td>Expenses:</td><td></td><td></td><td></td><td></td></tr><tr><td>Natural gas</td><td>93</td><td>67</td><td>57</td><td></td></tr><tr><td>Operation and maintenance</td><td>153</td><td>152</td><td>153</td><td></td></tr><tr><td>Depreciation and amortization</td><td>52</td><td>54</td><td>56</td><td></td></tr><tr><td>Taxes other than income taxes</td><td>33</td><td>32</td><td>29</td><td></td></tr><tr><td>Total expenses</td><td>331</td><td>305</td><td>295</td><td></td></tr><tr><td>Operating Income</td><td>$ 270</td><td>$ 248</td><td>$ 207</td><td></td></tr><tr><td>Equity in earnings of unconsolidated affiliates</td><td>$ 19</td><td>$ 21</td><td>$ 26</td><td></td></tr><tr><td>Transportation throughput (in Bcf)</td><td>1,693</td><td>1,579</td><td>1,367</td><td></td></tr></table>

2012 Compared to 2011. Our Interstate Pipeline business segment reported operating income of $207 million for 2012 compared to $248 million for 2011. Operating income decreased $41 million primarily due to lower margins resulting from a backhaul contract that expired in 2011 ($16 million), as well as the associated reduction in compressor efficiency ($8 million) on the Carthage to Perryville pipeline due to lower volumes, lower off-system transportation revenues ($8 million), lower seasonal and market-sensitive transportation contracts ($7 million) and ancillary services ($7 million). These margin decreases were partially offset by the effects of the 10-year agreement with our natural gas distribution affiliate ($5 million) which we restructured in 2010. Operating income decreases due to higher operations and maintenance expenses ($1 million) and higher depreciation and amortization expenses ($2 million) due to asset additions were offset by lower taxes other than income taxes ($3 million).

2011 Compared to 2010. Our Interstate Pipeline business segment reported operating income of $248 million for 2011 compared to $270 million for 2010. Operating income decreased $22 million primarily due to a backhaul contract that expired in 2011 ($22 million), as well as the effects of the restructured 10-year agreement with our natural gas distribution affiliate ($11 million) and lower off-system revenues ($11 million). These margin decreases were partially offset by new firm transportation contracts and higher ancillary revenues ($22 million). Operating income increases due to lower operation and maintenance expenses ($1 million) and lower taxes other than income ($1 million) were offset by increased depreciation and amortization expenses ($2 million) related to new assets.

Equity Earnings. In addition, this business segment recorded equity income of $19 million, $21 million and $26 million for the years ended December 31, 2010, 2011 and 2012, respectively, from its 50% interest in Southeast Supply Header, LLC (SESH), a jointly-owned pipeline. The 2012 increase in equity earnings primarily resulted from restructuring and extending a long-term agreement with an anchor shipper at the end of 2011. These amounts are included in Equity in earnings of unconsolidated affiliates under the Other Income (Expense) caption in the Statements of Consolidated Income.



## Field Services

The following table provides summary data of our Field Services business segment for 2010, 2011 and 2012 (in millions, except throughput data):

<table><tr><td rowspan="2"></td><td colspan="4">Year Ended December 31,</td></tr><tr><td>2010</td><td colspan="2">2011</td><td>2012</td></tr><tr><td>Revenues</td><td>$ 338</td><td>$ 412</td><td>$ 506</td><td></td></tr><tr><td>Expenses:</td><td></td><td></td><td></td><td></td></tr><tr><td>Natural gas</td><td>72</td><td>68</td><td>122</td><td></td></tr><tr><td>Operation and maintenance</td><td>85</td><td>112</td><td>115</td><td></td></tr><tr><td>Depreciation and amortization</td><td>25</td><td>37</td><td>50</td><td></td></tr><tr><td>Taxes other than income taxes</td><td>5</td><td>6</td><td>5</td><td></td></tr><tr><td>Total expenses</td><td>187</td><td>223</td><td>292</td><td></td></tr><tr><td>Operating Income</td><td>$ 151</td><td>$ 189</td><td>$ 214</td><td></td></tr><tr><td>Equity in earnings of unconsolidated affiliates</td><td>$ 10</td><td>$ 9</td><td>$ 5</td><td></td></tr><tr><td>Gathering throughput (in Bcf)</td><td>650</td><td>823</td><td>896</td><td></td></tr></table>

2012 Compared to 2011. Our Field Services business segment reported operating income of $214 million for 2012 compared to $189 million for 2011. Operating income increased $25 million primarily from increased margins ($36 million) due to gathering projects in the Haynesville shale, including revenues from throughput guarantees, growth in gathering services and retained natural gas volumes, and acquisitions completed during 2012 ($13 million), partially offset by lower commodity prices ($28 million) on sales of retained natural gas. Operating income also increased ($3 million) due to the classification of earnings from the 50% partnership interest in Waskom which we already owned as operating income beginning in August 2012 instead of equity earnings as reported for prior periods, due to our July 31, 2012 purchase of the 50% interest in Waskom that we did not already own. Lower operation and maintenance expenses ($7 million) were partially offset by higher depreciation expense ($6 million).

2011 Compared to 2010. Our Field Services business segment reported operating income of $189 million for 2011 compared to $151 million for 2010. Operating income increased $38 million primarily from increased margins due to gathering projects in the Haynesville and Fayetteville shales and growth in core gathering services, including revenues from throughput guarantees ($88 million), partially offset by lower commodity prices ($10 million) from sales of retained natural gas and reduced processing margins. Increases in operation and maintenance expenses ($6 million), depreciation expense ($12 million) and taxes other than income ($1 million) resulted primarily from the expansion of the Magnolia and Olympia gathering systems in North Louisiana. In addition, operating expenses in 2010 benefited from a gain on the sale of non-strategic gathering assets ($21 million).

Equity Earnings. In addition, this business segment recorded equity income of $10 million, $9 million and $5 million for the years ended December 31, 2010, 2011 and 2012, respectively, from its 50% interest in Waskom. These amounts are included in Equity in earnings of unconsolidated affiliates under the Other Income (Expense) caption in the Statements of Consolidated Income. As discussed above, beginning on August 1, 2012, financial results for Waskom are included in operating income.

## Other Operations

The following table provides summary data for our Other Operations business segment for 2010, 2011 and 2012 (in millions):

<table><tr><td rowspan="2"></td><td colspan="4">Year Ended December 31,</td></tr><tr><td>2010</td><td colspan="2">2011</td><td>2012</td></tr><tr><td>Revenues</td><td>$ 11</td><td>$ 11</td><td>$ 11</td><td>$ 11</td></tr><tr><td>Expenses (Income)</td><td>(3)</td><td>5</td><td>9</td><td></td></tr><tr><td>Operating Income</td><td>$ 14</td><td>$ 6</td><td>$ 2</td><td></td></tr></table>



# LIQUIDITY AND CAPITAL RESOURCES

## Historical Cash Flows

The net cash provided by (used in) operating, investing and financing activities for 2010, 2011 and 2012 is as follows (in millions):

<table><tr><td rowspan="2"></td><td colspan="4">Year Ended December 31,</td></tr><tr><td>2010</td><td>2011</td><td>2012</td><td></td></tr><tr><td>Cash provided by (used in):</td><td></td><td></td><td></td><td></td></tr><tr><td>Operating activities</td><td>$     1,386</td><td>$     1,888</td><td>$     1,860</td><td></td></tr><tr><td>Investing activities</td><td>(1,420)</td><td>(1,206)</td><td>(1,603)</td><td></td></tr><tr><td>Financing activities</td><td>(507)</td><td>(661)</td><td>169</td><td></td></tr></table>

## Cash Provided by Operating Activities

Net cash provided by operating activities decreased $28 million in 2012 compared to 2011 primarily due to increased net tax payments ($251 million), which was partially offset by increased cash provided by net accounts receivable/payable ($45 million), increased cash provided by net regulatory assets and liabilities ($35 million), increased cash from non-trading derivatives ($33 million), increased cash related to gas storage inventory ($25 million), decreased net margin deposits ($19 million) and increased cash provided by fuel cost recovery ($18 million).

Net cash provided by operating activities increased $502 million in 2011 compared to 2010 primarily due to increased tax refunds ($412 million), increased cash related to gas storage inventory ($41 million), decreased net margin deposits ($27 million) and increased cash provided by net regulatory assets and liabilities ($17 million), which were partially offset by decreased cash provided by net accounts receivable/payable ($108 million) and decreased cash provided by fuel cost recovery ($61 million).

## Cash Used in Investing Activities

Net cash used in investing activities increased $397 million in 2012 compared to 2011 due to increased cash paid for acquisitions ($360 million) and decreased cash received from the DOE grant ($110 million), which were partially offset by decreased capital expenditures ($91 million).

Net cash used in investing activities decreased $214 million in 2011 compared to 2010 due to decreased capital expenditures ($206 million) and increased cash received from the DOE grant ($20 million).

## Cash Provided by (Used in) Financing Activities

Net cash provided by financing activities increased $830 million in 2012 compared to 2011 primarily due to increased proceeds from long-term debt ($1,945 million) and decreased debt issuance costs ($8 million), which were partially offset by increased payments of long-term debt ($681 million), increased payments of commercial paper ($387 million), decreased short-term borrowings ($33 million), increased cash paid for debt retirement ($11 million) and increased payments of common stock dividends ($9 million).

Net cash used in financing activities increased $154 million in 2011 compared to 2010 primarily due to decreased proceeds from the issuance of common stock ($410 million), increased payments of long-term debt ($126 million), decreased proceeds from commercial paper ($81 million), increased cash paid for debt exchange ($58 million), increased debt issuance costs ($22 million) and increased common stock dividend payments ($18 million), which were partially offset by increased proceeds from long-term debt ($550 million) and increased short-term debt borrowings ($11 million).



## Future Sources and Uses of Cash

Our liquidity and capital requirements are affected primarily by our results of operations, capital expenditures, debt service requirements, tax payments, working capital needs and various regulatory actions. Our principal anticipated cash requirements for 2013 include the following:

• capital expenditures of approximately $1.7 billion;

• the retirement of CenterPoint Houston and CERC long-term debt aggregating $815 million;

• scheduled principal payments on transition and system restoration bonds of $447 million;

• pension contributions aggregating approximately $83 million; and

• dividend payments on CenterPoint Energy common stock and interest payments on debt.

We expect that cash on hand, borrowings under our credit facilities, proceeds from commercial paper and anticipated cash flows from operations will be sufficient to meet our anticipated cash needs in 2013. Cash needs or discretionary financing or refinancing may result in the issuance of equity or debt securities in the capital markets or the arrangement of additional credit facilities. Issuances of equity or debt in the capital markets, funds raised in the commercial paper markets and additional credit facilities may not, however, be available to us on acceptable terms.

The following table sets forth our capital expenditures for 2012 and estimates of our capital expenditures for currently identified or planned projects for 2013 through 2017 (in millions):

<table><tr><td></td><td colspan="2">2012</td><td colspan="2">2013</td><td colspan="2">2014</td><td colspan="2">2015</td><td colspan="2">2016</td><td colspan="2">2017</td></tr><tr><td>Electric Transmission &amp; Distribution</td><td>$</td><td>599</td><td>$</td><td>720</td><td>$</td><td>677</td><td>$</td><td>557</td><td>$</td><td>534</td><td>$</td><td>512</td></tr><tr><td>Natural Gas Distribution</td><td></td><td>359</td><td></td><td>422</td><td></td><td>420</td><td></td><td>400</td><td></td><td>387</td><td></td><td>393</td></tr><tr><td>Competitive Natural Gas Sales and Services</td><td></td><td>6</td><td></td><td>9</td><td></td><td>25</td><td></td><td>37</td><td></td><td>36</td><td></td><td>11</td></tr><tr><td>Interstate Pipelines</td><td></td><td>132</td><td></td><td>201</td><td></td><td>212</td><td></td><td>128</td><td></td><td>136</td><td></td><td>126</td></tr><tr><td>Field Services</td><td></td><td>52</td><td></td><td>271</td><td></td><td>114</td><td></td><td>88</td><td></td><td>70</td><td></td><td>71</td></tr><tr><td>Other Operations</td><td></td><td>40</td><td></td><td>43</td><td></td><td>30</td><td></td><td>45</td><td></td><td>56</td><td></td><td>52</td></tr><tr><td>Total</td><td>$</td><td>1,188</td><td>$</td><td>1,666</td><td>$</td><td>1,478</td><td>$</td><td>1,255</td><td>$</td><td>1,219</td><td>$</td><td>1,165</td></tr></table>

Our capital expenditures are expected to be used for investment in infrastructure for our electric transmission and distribution operations, and our natural gas transmission, distribution and gathering operations. These capital expenditures are anticipated to maintain reliability and safety as well as expand our systems through value-added projects.



The following table sets forth estimates of our contractual obligations, including payments due by period (in millions):

<table><tr><td>Contractual Obligations</td><td>Total</td><td>2013</td><td>2014-2015</td><td>2016-2017</td><td>2018 and thereafter</td></tr><tr><td>Transition and system restoration bond debt</td><td>$ 3,847</td><td>$ 447</td><td>$ 726</td><td>$ 802</td><td>$ 1,872</td></tr><tr><td>Other long-term debt (1)</td><td>6,555</td><td>815</td><td>579</td><td>953</td><td>4,208</td></tr><tr><td>Interest payments — transition and system restoration bond debt (2)</td><td>730</td><td>135</td><td>228</td><td>176</td><td>191</td></tr><tr><td>Interest payments — other long-term debt (2)</td><td>3,759</td><td>327</td><td>579</td><td>497</td><td>2,356</td></tr><tr><td>Short-term borrowings</td><td>38</td><td>38</td><td>—</td><td>—</td><td>—</td></tr><tr><td>Capital leases</td><td>1</td><td>—</td><td>—</td><td>—</td><td>1</td></tr><tr><td>Operating leases (3)</td><td>48</td><td>12</td><td>15</td><td>8</td><td>13</td></tr><tr><td>Benefit obligations (4)</td><td>—</td><td>—</td><td>—</td><td>—</td><td>—</td></tr><tr><td>Purchase obligations (5)</td><td>4</td><td>4</td><td>—</td><td>—</td><td>—</td></tr><tr><td>Non-trading derivative liabilities</td><td>16</td><td>14</td><td>2</td><td>—</td><td>—</td></tr><tr><td>Other commodity commitments (6)</td><td>1,389</td><td>430</td><td>558</td><td>245</td><td>156</td></tr><tr><td>Other</td><td>6</td><td>6</td><td>—</td><td>—</td><td>—</td></tr><tr><td>Total contractual cash obligations</td><td>$ 16,393</td><td>$ 2,228</td><td>$ 2,687</td><td>$ 2,681</td><td>$ 8,797</td></tr></table>

(1) 2.0% Zero-Premium Exchangeable Subordinated Notes due 2029 (ZENS) obligations are included in the 2018 and thereafter column at their contingent principal amount as of December 31, 2012 of $784 million. These obligations are exchangeable for cash at any time at the option of the holders for 95% of the current value of the reference shares attributable to each ZENS ($540 million at December 31, 2012), as discussed in Note 9 to our consolidated financial statements.

(2) We calculated estimated interest payments for long-term debt as follows: for fixed-rate debt and term debt, we calculated interest based on the applicable rates and payment dates; for variable-rate debt and/or non-term debt, we used interest rates in place as of December 31, 2012. We typically expect to settle such interest payments with cash flows from operations and short-term borrowings.

(3) For a discussion of operating leases, please read Note 13(c) to our consolidated financial statements.

(4) In 2013, we expect to make contributions to our qualified pension plan aggregating approximately $83 million. We expect to contribute approximately $9 million and $18 million, respectively, to our non-qualified pension and postretirement benefits plans in 2013.

(5) Represents capital commitments for material in connection with our Interstate Pipelines business segment.

(6) For a discussion of other commodity commitments, please read Note 13(a) to our consolidated financial statements.

Off-Balance Sheet Arrangements. Other than the guarantees described below and operating leases, we have no off-balance sheet arrangements.

Prior to the distribution of our ownership in RRI to our shareholders, CERC had guaranteed certain contractual obligations of what became RRI’s trading subsidiary. When the companies separated, RRI agreed to secure CERC against obligations under the guaranties RRI had been unable to extinguish by the time of separation. Pursuant to such agreement, as amended in December 2007, RRI (now GenOn) agreed to provide to CERC cash or letters of credit as security against CERC’s obligations under its remaining guaranties for demand charges under certain gas transportation agreements if and to the extent changes in market conditions expose CERC to a risk of loss on those guaranties based on an annual calculation, with any required collateral to be posted each December. The undiscounted maximum potential payout of the demand charges under these transportation contracts, which will be in effect until 2018, was approximately $73 million as of December 31, 2012. Based on market conditions in the fourth quarter of 2012 at the time the most recent annual calculation was made under the agreement, GenOn was not obligated to post any security. As a result, CenterPoint Energy returned to GenOn in the fourth quarter of 2012 the approximately $28 million of aggregate collateral previously posted by GenOn under the agreement. If GenOn should fail to perform the contractual



obligations, CERC could have to honor its guarantee and, in such event, any collateral then provided as security may be insufficient to satisfy CERC’s obligations.

Regulatory Matters. Regulatory developments that have occurred since our 2011 Form 10-K was filed with the Securities and Exchange Commission (SEC) are discussed below.

## CenterPoint Houston

June 2010 Rate Case. The order on rehearing issued by the Public Utility Commission of Texas (Texas Utility Commission) in connection with CenterPoint Houston's 2010 rate case was appealed to the Texas courts by various parties and a trial was scheduled for December 2012. In December 2012, the parties entered into a settlement agreement prior to the trial dismissing all material provisions of the appeals.

Other. In May 2012, CenterPoint Houston filed an application, subsequently modified consistent with the Texas Utility Commission's preliminary order, requesting approval to recover a total of approximately $47.5 million in 2013 consisting of: (1) estimated 2013 energy efficiency program costs of $42.9 million; (2) a credit of $1.8 million related to the over-recovery of 2011 program costs; (3) a performance incentive for 2011 program achievements of $6.3 million and (4) certain rate case expenses. In October 2012, the Texas Utility Commission approved a settlement agreement filed by the parties to recover a total of $46.2 million. The $1.3 million reduction was attributable to settlement spending from CenterPoint Houston's 2006 rate settlement included in the 2011 performance incentive calculation. The settlement preserves the right for CenterPoint Houston to appeal the reduction in its requested performance bonus amount. The rates took effect with the commencement of CenterPoint Houston's January 2013 billing month.

## Gas Operations

Beaumont/East Texas Rate Case. In July 2012, the natural gas distribution business of CERC (Gas Operations) filed a general rate case with the Railroad Commission of Texas (Railroad Commission) and certain municipalities requesting an increase of approximately $8.6 million based on a proposed rate of return of 9.09%, a return on equity (ROE) of 11.00%, and a capital structure with 42% debt and 58% equity. Rates went into effect in August 2012 for 24 cities. All other cities suspended the rates for up to 90 days or denied any increase outright. The Railroad Commission suspended the rates for the environs and for the cities that have given up original jurisdiction for up to 150 days. On November 5, 2012, rates went into effect for another 13 cities. On November 15, 2012, a Unanimous Settlement Agreement was signed by all parties and resolved all issues resulting in a net revenue requirement increase of $6.2 million. On December 4, 2012, the Railroad Commission approved the Unanimous Settlement Agreement of $6.2 million and rates went into effect on December 7, 2012. Beginning January 2, 2013, a rate case expense surcharge of $0.16 was implemented and will only affect customers in the cities that gave up original jurisdictions and cities and environs of all parties involved in the Unanimous Settlement Agreement. The rate case expense surcharge will continue over the next 36 months or until all approved expenses are collected.

Mississippi Regulatory Rate Adjustment (RRA). In May 2012, Gas Operations and the Mississippi Public Utility Staff filed a joint stipulation for the revised RRA and initial Weather Normalization Adjustment which the Mississippi Public Service Commission (MPSC) approved in May 2012. In June 2012, Gas Operations requested an annual increase of approximately $2.2 million under the newly revised RRA based on calendar year 2011. New rates reflecting an increase of approximately $1.7 million, as approved by the MPSC, took effect on September 20, 2012.

Minnesota Conservation Improvement Program (CIP). In May 2012, Gas Operations filed a request with the Minnesota Public Utilities Commission (MPUC) for a $4.6 million CIP incentive. The MPUC approved the incentive in December 2012.

Oklahoma Performance Based Rate Change (PBRC). In March 2012, Gas Operations filed a PBRC with the Oklahoma Corporation Commission (OCC) showing that it had earnings for 2011 above the prescribed threshold and would refund approximately $1.9 million to customers beginning in July 2012. The OCC issued a final order approving the refund on June 6, 2012.

Houston and South Texas Gas Reliability Infrastructure Programs (GRIP). Gas Operations' Houston and South Texas Divisions each submitted annual GRIP filings on March 30, 2012. For the Houston division, the filing was to recover costs related to $51.2 million in incremental capital expenditures that were incurred in 2011. The increase in revenue requirements for this filing period was $9.4 million annually based on an authorized rate of return of 8.65%. For the South Texas division, the filing was to recover costs related to $14.5 million in incremental capital expenditures that were incurred since the last rate case. The increase in revenue requirements for this filing period was $2.4 million annually based on an authorized rate of return of 8.75%. In June 2012, the



Railroad Commission approved both GRIP applications as filed, and the new rates were implemented in July 2012 in the applicable cities, with the exception of Houston and Pasadena. Lower GRIP rates were implemented in July 2012 for these two cities, subject to final action by the Railroad Commission. In September 2012, the Railroad Commission approved the GRIP rates as originally filed and the rates were then implemented in the two remaining cities.

City of Houston Gas Utility Rate Inquiry. In July 2012, the City Council of Houston adopted an ordinance to initiate a formal inquiry regarding the reasonableness of the rates charged by Gas Operations in its Houston service territory. On January 16, 2013, the City Council of Houston voted to require a rate filing by Gas Operations by March 22, 2013. Gas Operations and the City of Houston have agreed to postpone filing of a response to the rate inquiry until at least September 2013.

## Interstate Pipelines

CenterPoint Energy-Mississippi River Transmission, LLC Rate Filing. In August 2012, our subsidiary, CenterPoint Energy-Mississippi River Transmission, LLC (MRT), an interstate pipeline that provides natural gas transportation, natural gas storage and pipeline services to customers principally in Arkansas, Illinois and Missouri, made a rate filing with the Federal Energy Regulatory Commission (FERC) pursuant to Section 4 of the Natural Gas Act. In its filing, MRT requested an annual cost of service of $103.8 million (an increase of approximately $47.3 million above the annual cost of service underlying the current FERC approved maximum rates for MRT's pipeline), new depreciation rates, an overall rate of return of 10.813% (based on a return on equity of 13.62%), a regulatory compliance cost (RCC) surcharge with a true-up mechanism to recover safety, environmental, and security costs associated with mandated requirements and billing determinants reflecting no adjustments for MRT's conversion of a portion of CenterPoint Energy Gas Transmission Company, LLC's (CEGT) firm capacity to a lease. In August 2012, a number of parties filed protests in response to MRT's rate filing. In September 2012, the FERC issued an order accepting MRT's filing, suspending the filed tariff rates for the full statutorily permitted five month suspension period and setting certain issues for hearing. In particular, the FERC limited the scope of the RCC surcharge set for hearing to the recovery of only security costs. In October 2012, MRT requested rehearing as to the proper scope of the RCC surcharge. The procedural schedule for the rate filing contemplates a hearing at the FERC in the third quarter of 2013.

CEGT Rate Settlement Proceeding. In an effort to avoid the expense of a rate case, in October 2012 CEGT initiated a settlement process with its customers. Should these discussions fail, CEGT will consider filing with the FERC for a general rate increase in 2013. CEGT will attempt to reach a mutually agreeable rate solution with its customers to recover the increased costs to maintain a safe and reliable system, but there can be no assurance that it will be successful or will avoid the initiation of a general rate case filing.

Debt Financing Transactions. In January 2012, Bond Company IV issued $1.695 billion of transition bonds in three tranches with interest rates ranging from 0.9012% to 3.0282% and final maturity dates ranging from April 15, 2018 to October 15, 2025. Through the issuance of these transition bonds, CenterPoint Houston recovered the additional true-up balance of $1.695 billion, less approximately $10.4 million of offering expenses. The transition bonds will be repaid through a charge imposed on customers in CenterPoint Houston’s service territory.

In February 2012, we purchased $275 million aggregate principal amount of pollution control bonds issued on our behalf at 100% of their principal amount plus accrued interest pursuant to the mandatory tender provisions of the bonds. The purchased pollution control bonds will remain outstanding and may be remarket. Prior to the purchase, the pollution control bonds had fixed interest rates ranging from 5.15% to 5.95%. The purchases reduced temporary investments and leverage while providing us with the flexibility to finance future capital needs in the tax-exempt market through the remarketing of these bonds. Additionally, in March 2012, we redeemed $100 million aggregate principal amount of pollution control bonds issued on our behalf at 100% of their principal amount plus accrued interest pursuant to the optional redemption provisions of the bonds. The redeemed pollution control bonds had a fixed interest rate of 5.25%.

In August 2012, CenterPoint Houston issued $300 million of 2.25% general mortgage bonds due 2022 and $500 million of 3.55% general mortgage bonds due 2042. The net proceeds from the sale of the bonds were used to fund a portion of the redemption of the general mortgage bonds discussed below.

In August 2012, CenterPoint Houston redeemed $300 million principal amount of its 5.75% general mortgage bonds due 2014 at a price of 107.332% of their principal amount and $500 million principal amount of its 7.00% general mortgage bonds due 2014 at a price of 109.397% of their principal amount. Redemption premiums for the two series aggregated approximately $69 million.



Credit Facilities. As of February 14, 2013, we had the following facilities (in millions):

<table><tr><td>Date Executed</td><td>Company</td><td>Size of Facility</td><td>Amount Utilized at February 14, 2013 (1)</td><td>Termination Date</td></tr><tr><td>September 9, 2011</td><td>CenterPoint Energy</td><td>$ 1,200</td><td>$ 7 (2)</td><td>September 9, 2016</td></tr><tr><td>September 9, 2011</td><td>CenterPoint Houston</td><td>300</td><td>4 (2)</td><td>September 9, 2016</td></tr><tr><td>September 9, 2011</td><td>CERC Corp.</td><td>950</td><td>—</td><td>September 9, 2016</td></tr></table>

(1) Based on the debt (excluding transition and system restoration bonds) to earnings before interest, taxes, depreciation and amortization (EBITDA) covenant contained in our $1.2 billion credit facility, we would have been permitted to utilize the full capacity of our credit facilities of $2.5 billion at December 31, 2012.

(2) Represents outstanding letters of credit.

Our $1.2 billion credit facility can be drawn at the London Interbank Offered Rate (LIBOR) plus 150 basis points based on our current credit ratings. The facility contains a debt (excluding transition and system restoration bonds) to EBITDA covenant (as those terms are defined in the facility). The facility allows for a temporary increase of the permitted ratio in the financial covenant from 5 times to 5.5 times if CenterPoint Houston experiences damage from a natural disaster in its service territory and we certify to the administrative agent that CenterPoint Houston has incurred system restoration costs reasonably likely to exceed $100 million in a consecutive twelve-month period, all or part of which CenterPoint Houston intends to seek to recover through securitization financing. Such temporary increase in the financial covenant would be in effect from the date we deliver our certification until the earliest to occur of (i) the completion of the securitization financing, (ii) the first anniversary of our certification or (iii) the revocation of such certification.

CenterPoint Houston’s $300 million credit facility can be drawn at LIBOR plus 125 basis points based on CenterPoint Houston’s current credit ratings. The facility contains a debt (excluding transition and system restoration bonds) to total capitalization covenant which limits debt to 65% of CenterPoint Houston’s total capitalization.

CERC Corp.’s $950 million credit facility can be drawn at LIBOR plus 150 basis points based on CERC Corp.’s current credit ratings. The facility contains a debt to total capitalization covenant which limits debt to 65% of CERC’s total capitalization.

Borrowings under each of the facilities are subject to customary terms and conditions. However, there is no requirement that the borrower make representations prior to borrowings as to the absence of material adverse changes or litigation that could be expected to have a material adverse effect. Borrowings under each of the credit facilities are subject to acceleration upon the occurrence of events of default that we consider customary. The facilities also provide for customary fees, including commitment fees, administrative agent fees, fees in respect of letters of credit and other fees. In each of the three revolving credit facilities, the spread to LIBOR and the commitment fees fluctuate based on the borrower's credit rating. The borrowers are currently in compliance with the various business and financial covenants in the three revolving credit facilities.

Our $1.2 billion credit facility backstops our $1.0 billion commercial paper program. The $950 million CERC Corp. credit facility backstops a $915 million commercial paper program. As of December 31, 2012, we and CERC Corp. had no commercial paper outstanding.

Securities Registered with the SEC. CenterPoint Energy, CenterPoint Houston and CERC Corp. have filed a joint shelf registration statement with the SEC registering indeterminate principal amounts of CenterPoint Houston’s general mortgage bonds, CERC Corp.’s senior debt securities and CenterPoint Energy’s senior debt securities and junior subordinated debt securities and an indeterminate number of CenterPoint Energy’s shares of common stock, shares of preferred stock, as well as stock purchase contracts and equity units.

Temporary Investments. As of February 14, 2013, CenterPoint Houston had external temporary investments aggregating $502 million.

Money Pool. We have a money pool through which the holding company and participating subsidiaries can borrow or invest on a short-term basis. Funding needs are aggregated and external borrowing or investing is based on the net cash position. The net funding requirements of the money pool are expected to be met with borrowings under our revolving credit facility or the sale of our commercial paper.



Impact on Liquidity of a Downgrade in Credit Ratings. The interest on borrowings under our credit facilities is based on our credit rating. As of February 14, 2013, Moody’s Investors Service, Inc. (Moody’s), Standard & Poor’s Rating Services (S&P), a division of The McGraw-Hill Companies, and Fitch, Inc. (Fitch) had assigned the following credit ratings to senior debt of CenterPoint Energy and certain subsidiaries:

<table><tr><td rowspan="2">Company/Instrument</td><td colspan="2">Moody&#x27;s</td><td colspan="2">S&amp;P</td><td colspan="2">Fitch</td></tr><tr><td>Rating</td><td>Outlook (1)</td><td>Rating</td><td>Outlook (2)</td><td>Rating</td><td>Outlook (3)</td></tr><tr><td>CenterPoint Energy Senior</td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Unsecured Debt</td><td>Baa3</td><td>Positive</td><td>BBB</td><td>Stable</td><td>BBB</td><td>Stable</td></tr><tr><td>CenterPoint Houston Senior</td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Secured Debt</td><td>A3</td><td>Positive</td><td>A</td><td>Stable</td><td>A</td><td>Stable</td></tr><tr><td>CERC Corp. Senior Unsecured Debt</td><td>Baa2</td><td>Stable</td><td>BBB+</td><td>Stable</td><td>BBB</td><td>Stable</td></tr></table>

(1) A Moody’s rating outlook is an opinion regarding the likely direction of a rating over the medium term.

(2) An S&P rating outlook assesses the potential direction of a long-term credit rating over the intermediate to longer term.

(3) A Fitch rating outlook encompasses a one- to two-year horizon as to the likely ratings direction.

We cannot assure you that the ratings set forth above will remain in effect for any given period of time or that one or more of these ratings will not be lowered or withdrawn entirely by a rating agency. We note that these credit ratings are included for informational purposes and are not recommendations to buy, sell or hold our securities and may be revised or withdrawn at any time by the rating agency. Each rating should be evaluated independently of any other rating. Any future reduction or withdrawal of one or more of our credit ratings could have a material adverse impact on our ability to obtain short- and long-term financing, the cost of such financings and the execution of our commercial strategies.

A decline in credit ratings could increase borrowing costs under our $1.2 billion credit facility, CenterPoint Houston’s $300 million credit facility and CERC Corp.’s $950 million credit facility. If our credit ratings or those of CenterPoint Houston or CERC Corp. had been downgraded one notch by each of the three principal credit rating agencies from the ratings that existed at December 31, 2012, the impact on the borrowing costs under our bank credit facilities would have been immaterial. A decline in credit ratings would also increase the interest rate on long-term debt to be issued in the capital markets and could negatively impact our ability to complete capital market transactions and to access the commercial paper market.

CERC Corp. and its subsidiaries purchase natural gas from one of their suppliers under supply agreements that contain an aggregate credit threshold of $120 million based on CERC Corp.’s S&P senior unsecured long-term debt rating of BBB+. Under these agreements, CERC may need to provide collateral if the aggregate threshold is exceeded. Upgrades and downgrades from this BBB+ rating will increase and decrease the aggregate credit threshold accordingly.

CenterPoint Energy Services, Inc. (CES), a wholly owned subsidiary of CERC Corp. operating in our Competitive Natural Gas Sales and Services business segment, provides comprehensive natural gas sales and services primarily to commercial and industrial customers and electric and gas utilities throughout the central and eastern United States. In order to economically hedge its exposure to natural gas prices, CES uses derivatives with provisions standard for the industry, including those pertaining to credit thresholds. Typically, the credit threshold negotiated with each counterparty defines the amount of unsecured credit that such counterparty will extend to CES. To the extent that the credit exposure that a counterparty has to CES at a particular time does not exceed that credit threshold, CES is not obligated to provide collateral. Mark-to-market exposure in excess of the credit threshold is routinely collateralized by CES. As of December 31, 2012, the amount posted as collateral aggregated approximately $21 million. Should the credit ratings of CERC Corp. (as the credit support provider for CES) fall below certain levels, CES would be required to provide additional collateral up to the amount of its previously unsecured credit limit. We estimate that as of December 31, 2012, unsecured credit limits extended to CES by counterparties aggregate $335 million and $6 million of such amount was utilized.

Pipeline tariffs and contracts typically provide that if the credit ratings of a shipper or the shipper’s guarantor drop below a threshold level, which is generally investment grade ratings from both Moody’s and S&P, cash or other collateral may be demanded from the shipper in an amount equal to the sum of three months’ charges for pipeline services plus the unrecouped cost of any lateral built for such shipper. If the credit ratings of CERC Corp. decline below the applicable threshold levels, CERC Corp. might need to provide cash or other collateral of as much as $179 million as of December 31, 2012. The amount of collateral will depend on seasonal variations in transportation levels.



In September 1999, we issued ZENS having an original principal amount of $1.0 billion of which $840 million remains outstanding at December 31, 2012. Each ZENS note was originally exchangeable at the holder's option at any time for an amount of cash equal to 95% of the market value of the reference shares of Time Warner Inc. common stock (TW Common) attributable to such note. The number and identity of the reference shares attributable to each ZENS note are adjusted for certain corporate events. As of December 31, 2012, the reference shares for each ZENS note consisted of 0.5 share of TW Common, 0.125505 share of Time Warner Cable Inc. common stock (TWC Common) and 0.045455 share of AOL Inc. common stock (AOL Common). If our creditworthiness were to drop such that ZENS note holders thought our liquidity was adversely affected or the market for the ZENS notes were to become illiquid, some ZENS note holders might decide to exchange their ZENS notes for cash. Funds for the payment of cash upon exchange could be obtained from the sale of the shares of TW Common, TWC Common and AOL Common that we own or from other sources. We own shares of TW Common, TWC Common and AOL Common equal to approximately 100% of the reference shares used to calculate our obligation to the holders of the ZENS notes. ZENS note exchanges result in a cash outflow because tax deferrals related to the ZENS notes and TW Common, TWC Common and AOL Common shares would typically cease when ZENS notes are exchanged or otherwise retired and TW Common, TWC Common and AOL Common shares are sold. The ultimate tax liability related to the ZENS notes continues to increase by the amount of the tax benefit realized each year, and there could be a significant cash outflow when the taxes are paid as a result of the retirement of the ZENS notes. If all ZENS notes had been exchanged for cash on December 31, 2012, deferred taxes of approximately $405 million would have been payable in 2012.

Cross Defaults. Under our revolving credit facility, a payment default on, or a non-payment default that permits acceleration of, any indebtedness exceeding $75 million by us or any of our significant subsidiaries will cause a default. In addition, three outstanding series of our senior notes, aggregating $750 million in principal amount as of December 31, 2012, provide that a payment default by us, CERC Corp. or CenterPoint Houston in respect of, or an acceleration of, borrowed money and certain other specified types of obligations, in the aggregate principal amount of $50 million, will cause a default. A default by CenterPoint Energy would not trigger a default under our subsidiaries' debt instruments or bank credit facilities.

Possible Acquisitions, Divestitures and Joint Ventures. From time to time, we consider the acquisition or the disposition of assets or businesses or possible joint ventures or other joint ownership arrangements with respect to assets or businesses. Any determination to take any action in this regard will be based on market conditions and opportunities existing at the time, and accordingly, the timing, size or success of any efforts and the associated potential capital commitments are unpredictable. We may seek to fund all or part of any such efforts with proceeds from debt and/or equity issuances. Debt or equity financing may not, however, be available to us at that time due to a variety of events, including, among others, maintenance of our credit ratings, industry conditions, general economic conditions, market conditions and market perceptions.

Other Factors that Could Affect Cash Requirements. In addition to the above factors, our liquidity and capital resources could be affected by:

- cash collateral requirements that could exist in connection with certain contracts, including our weather hedging arrangements, and gas purchases, gas price and gas storage activities of our Natural Gas Distribution and Competitive Natural Gas Sales and Services business segments;

- acceleration of payment dates on certain gas supply contracts, under certain circumstances, as a result of increased gas prices and concentration of natural gas suppliers;

• increased costs related to the acquisition of natural gas;

• increases in interest expense in connection with debt refinancings and borrowings under credit facilities;

• various legislative or regulatory actions;

• incremental collateral, if any, that may be required due to regulation of derivatives;

- the ability of GenOn and its subsidiaries to satisfy their obligations in respect of GenOn’s indemnity obligations to us and our subsidiaries or in connection with the contractual obligations to a third party pursuant to which CERC is a guarantor;

- the ability of REPs, including REP affiliates of NRG and Energy Future Holdings, which are CenterPoint Houston’s two largest customers, to satisfy their obligations to us and our subsidiaries;



• delays in cash collections attributable to billing delays;

- slower customer payments and increased write-offs of receivables due to higher gas prices or changing economic conditions;

• the outcome of litigation brought by and against us;

• contributions to pension and postretirement benefit plans;

- restoration costs and revenue losses resulting from future natural disasters such as hurricanes and the timing of recovery of such restoration costs; and

• various other risks identified in “Risk Factors” in Item 1A of this report.

Certain Contractual Limits on Our Ability to Issue Securities and Borrow Money. CenterPoint Houston’s credit facility limits CenterPoint Houston’s debt (excluding transition and system restoration bonds) as a percentage of its total capitalization to 65%. CERC Corp.’s credit facility limits CERC’s debt as a percentage of its total capitalization to 65%. Our $1.2 billion credit facility contains a debt, excluding transition and system restoration bonds, to EBITDA covenant which will temporarily increase if CenterPoint Houston experiences damage from a natural disaster in its service territory that meets certain criteria. Additionally, CenterPoint Houston has contractually agreed that it will not issue additional first mortgage bonds, subject to certain exceptions.

## CRITICAL ACCOUNTING POLICIES

A critical accounting policy is one that is both important to the presentation of our financial condition and results of operations and requires management to make difficult, subjective or complex accounting estimates. An accounting estimate is an approximation made by management of a financial statement element, item or account in the financial statements. Accounting estimates in our historical consolidated financial statements measure the effects of past business transactions or events, or the present status of an asset or liability. The accounting estimates described below require us to make assumptions about matters that are highly uncertain at the time the estimate is made. Additionally, different estimates that we could have used or changes in an accounting estimate that are reasonably likely to occur could have a material impact on the presentation of our financial condition, results of operations or cash flows. The circumstances that make these judgments difficult, subjective and/or complex have to do with the need to make estimates about the effect of matters that are inherently uncertain. Estimates and assumptions about future events and their effects cannot be predicted with certainty. We base our estimates on historical experience and on various other assumptions that we believe to be reasonable under the circumstances, the results of which form the basis for making judgments. These estimates may change as new events occur, as more experience is acquired, as additional information is obtained and as our operating environment changes. Our significant accounting policies are discussed in Note 2 to our consolidated financial statements. We believe the following accounting policies involve the application of critical accounting estimates. Accordingly, these accounting estimates have been reviewed and discussed with the audit committee of the board of directors.

## Accounting for Rate Regulation

Accounting guidance for regulated operations provides that rate-regulated entities account for and report assets and liabilities consistent with the recovery of those incurred costs in rates if the rates established are designed to recover the costs of providing the regulated service and if the competitive environment makes it probable that such rates can be charged and collected. Our Electric Transmission & Distribution business segment, our Natural Gas Distribution business segment and portions of our Interstate Pipelines business segment apply this accounting guidance. Certain expenses and revenues subject to utility regulation or rate determination normally reflected in income are deferred on the balance sheet as regulatory assets or liabilities and are recognized in income as the related amounts are included in service rates and recovered from or refunded to customers. Regulatory assets and liabilities are recorded when it is probable that these items will be recovered or reflected in future rates. Determining probability requires significant judgment on the part of management and includes, but is not limited to, consideration of testimony presented in regulatory hearings, proposed regulatory decisions, final regulatory orders and the strength or status of applications for rehearing or state court appeals. If events were to occur that would make the recovery of these assets and liabilities no longer probable, we would be required to write off or write down these regulatory assets and liabilities. At December 31, 2012, we had recorded regulatory assets of $4.3 billion and regulatory liabilities of $1.1 billion.

## Impairment of Long-Lived Assets and Intangibles

We review the carrying value of our long-lived assets, including goodwill and identifiable intangibles, whenever events or changes in circumstances indicate that such carrying values may not be recoverable, and at least annually for goodwill as required



by accounting guidance for goodwill and other intangible assets. Unforeseen events and changes in circumstances and market conditions and material differences in the value of long-lived assets and intangibles due to changes in estimates of future cash flows, interest rates, regulatory matters and operating costs could negatively affect the fair value of our assets and result in an impairment charge.

We performed our annual impairment test in the third quarter of 2012 and determined that a non-cash goodwill impairment charge in the amount of $252 million was required for the Competitive Natural Gas Sales and Services reportable segment. We also determined that no impairment charge was required for any other reportable segment. The adverse wholesale market conditions facing our energy services business, specifically the prospects for continued low geographic and seasonal price differentials for natural gas, led to a reduction in the estimate of the fair value of goodwill associated with this reporting unit.

Fair value is the amount at which the asset could be bought or sold in a current transaction between willing parties and may be estimated using a number of techniques, including quoted market prices or valuations by third parties, present value techniques based on estimates of cash flows, or multiples of earnings or revenue performance measures. The fair value of the asset could be different using different estimates and assumptions in these valuation techniques.

## Unbilled Energy Revenues

Revenues related to electricity delivery and natural gas sales and services are generally recognized upon delivery to customers. However, the determination of deliveries to individual customers is based on the reading of their meters, which is performed on a systematic basis throughout the month. At the end of each month, deliveries to customers since the date of the last meter reading are estimated and the corresponding unbilled revenue is estimated. Unbilled electricity delivery revenue is estimated each month based on daily supply volumes, applicable rates and analyses reflecting significant historical trends and experience. Unbilled natural gas sales are estimated based on estimated purchased gas volumes, estimated lost and unaccounted for gas and tariffed rates in effect. As additional information becomes available, or actual amounts are determinable, the recorded estimates are revised. Consequently, operating results can be affected by revisions to prior accounting estimates.

## Pension and Other Retirement Plans

We sponsor pension and other retirement plans in various forms covering all employees who meet eligibility requirements. We use several statistical and other factors that attempt to anticipate future events in calculating the expense and liability related to our plans. These factors include assumptions about the discount rate, expected return on plan assets and rate of future compensation increases as estimated by management, within certain guidelines. In addition, our actuarial consultants use subjective factors such as withdrawal and mortality rates. The actuarial assumptions used may differ materially from actual results due to changing market and economic conditions, higher or lower withdrawal rates or longer or shorter life spans of participants. These differences may result in a significant impact to the amount of pension expense recorded. Please read “— Other Significant Matters — Pension Plans” for further discussion.

## NEW ACCOUNTING PRONOUNCEMENTS

See Note 2(o) to our consolidated financial statements for a discussion of new accounting pronouncements that affect us.

## OTHER SIGNIFICANT MATTERS

Pension Plans. As discussed in Note 6(b) to our consolidated financial statements, we maintain a non-contributory qualified defined benefit pension plan covering substantially all employees. Employer contributions for the qualified plan are based on actuarial computations that establish the minimum contribution required under the Employee Retirement Income Security Act of 1974 (ERISA) and the maximum deductible contribution for income tax purposes.

Under the terms of our pension plan, we reserve the right to change, modify or terminate the plan. Our funding policy is to review amounts annually and contribute an amount at least equal to the minimum contribution required under ERISA.

The minimum funding requirements for the qualified pension plan were $0-, $35 and $73 million for 2010, 2011 and 2012, respectively. We made contributions of $-0-, $65 and $73 million in 2010, 2011 and 2012 for the respective years. We expect to make contributions aggregating approximately $83 million in 2013.

Additionally, we maintain an unfunded non-qualified benefit restoration plan that allows participants to receive the benefits to which they would have been entitled under our non-contributory pension plan except for the federally mandated limits on qualified plan benefits or on the level of compensation on which qualified plan benefits may be calculated. Employer contributions



for the non-qualified benefit restoration plan represent benefit payments made to participants and totaled $8 million, $10 million and $9 million in 2010, 2011 and 2012, respectively.

Changes in pension obligations and assets may not be immediately recognized as pension expense in the income statement, but generally are recognized in future years over the remaining average service period of plan participants. As such, significant portions of pension expense recorded in any period may not reflect the actual level of benefit payments provided to plan participants.

As the sponsor of a plan, we are required to (a) recognize on our balance sheet as an asset a plan's over-funded status or as a liability such plan's under-funded status, (b) measure a plan's assets and obligations as of the end of our fiscal year and (c) recognize changes in the funded status of our plans in the year that changes occur through adjustments to other comprehensive income and regulatory assets.

As of December 31, 2012, the projected benefit obligation exceeded the market value of plan assets of our pension plans by $618 million. Changes in interest rates or the market values of the securities held by the plan during 2013 could materially, positively or negatively, change our funded status and affect the level of pension expense and required contributions.

Pension cost was $86 million, $78 million and $82 million for 2010, 2011 and 2012, respectively, of which $44 million, $49 million and $67 million impacted pre-tax earnings.

The calculation of pension expense and related liabilities requires the use of assumptions. Changes in these assumptions can result in different expense and liability amounts, and future actual experience can differ from the assumptions. Two of the most critical assumptions are the expected long-term rate of return on plan assets and the assumed discount rate.

As of December 31, 2012, our qualified pension plan had an expected long-term rate of return on plan assets of 8.00%, which was unchanged from the rate assumed as of December 31, 2011. We believe that our actual asset allocation, on average, will approximate the targeted allocation and the estimated return on net assets. We regularly review our actual asset allocation and periodically rebalance plan assets as appropriate.

As of December 31, 2012, the projected benefit obligation was calculated assuming a discount rate of 4.00%, which is a 0.90% decrease from the 4.90% discount rate assumed in 2011. The discount rate was determined by reviewing yields on high-quality bonds that receive one of the two highest ratings given by a recognized rating agency and the expected duration of pension obligations specific to the characteristics of our plan.

Pension cost for 2013, including the benefit restoration plan, is estimated to be $73 million, of which we expect $60 million to impact pre-tax earnings, based on an expected return on plan assets of 8.00% and a discount rate of 4.00% as of December 31, 2012. If the expected return assumption were lowered by 0.50% from 8.00% to 7.50%, 2013 pension cost would increase by approximately $8 million.

As of December 31, 2012, the pension plan projected benefit obligation, including the unfunded benefit restoration plan, exceeded plan assets by $618 million. If the discount rate were lowered by 0.50% from 4.00% to 3.50%, the assumption change would increase our projected benefit obligation and 2013 pension expense by approximately $126 million and $6 million, respectively. In addition, the assumption change would impact our Consolidated Balance Sheet by increasing the regulatory asset recorded as of December 31, 2012 by $103 million and would result in a charge to comprehensive income in 2012 of $15 million, net of tax.

Future changes in plan asset returns, assumed discount rates and various other factors related to the pension plan will impact our future pension expense and liabilities. We cannot predict with certainty what these factors will be.



## Item 7A. Quantitative and Qualitative Disclosures About Market Risk

## Impact of Changes in Interest Rates and Energy Commodity Prices

We are exposed to various market risks. These risks arise from transactions entered into in the normal course of business and are inherent in our consolidated financial statements. Most of the revenues and income from our business activities are impacted by market risks. Categories of market risk include exposure to commodity prices through non-trading activities, interest rates and equity prices. A description of each market risk is set forth below:

• Commodity price risk results from exposures to changes in spot prices, forward prices and price volatilities of commodities, such as natural gas, natural gas liquids and other energy commodities.

• Interest rate risk primarily results from exposures to changes in the level of borrowings and changes in interest rates.

• Equity price risk results from exposures to changes in prices of individual equity securities.

Management has established comprehensive risk management policies to monitor and manage these market risks. We manage these risk exposures through the implementation of our risk management policies and framework. We manage our commodity price risk exposures through the use of derivative financial instruments and derivative commodity instrument contracts. During the normal course of business, we review our hedging strategies and determine the hedging approach we deem appropriate based upon the circumstances of each situation.

Derivative instruments such as futures, forward contracts, swaps and options derive their value from underlying assets, indices, reference rates or a combination of these factors. These derivative instruments include negotiated contracts, which are referred to as over-the-counter derivatives, and instruments that are listed and traded on an exchange.

Derivative transactions are entered into in our non-trading operations to manage and hedge certain exposures, such as exposure to changes in natural gas prices. We believe that the associated market risk of these instruments can best be understood relative to the underlying assets or risk being hedged.

## Interest Rate Risk

As of December 31, 2012, we had outstanding long-term debt, lease obligations and obligations under our ZENS that subject us to the risk of loss associated with movements in market interest rates. We have no material floating rate obligations.

As of December 31, 2011 and 2012, we had outstanding fixed-rate debt (excluding indexed debt securities) aggregating $8.7 billion and $9.7 billion, respectively, in principal amount and having a fair value of $9.8 billion and $10.9 billion, respectively. Because these instruments are fixed-rate, they do not expose us to the risk of loss in earnings due to changes in market interest rates (please read Note 11 to our consolidated financial statements). However, the fair value of these instruments would increase by approximately $215 million if interest rates were to decline by 10% from their levels at December 31, 2012. In general, such an increase in fair value would impact earnings and cash flows only if we were to reacquire all or a portion of these instruments in the open market prior to their maturity.

As discussed in Note 9 to our consolidated financial statements, the ZENS obligation is bifurcated into a debt component and a derivative component. The debt component of $138 million at December 31, 2012 was a fixed-rate obligation and, therefore, did not expose us to the risk of loss in earnings due to changes in market interest rates. However, the fair value of the debt component would increase by approximately $23 million if interest rates were to decline by 10% from levels at December 31, 2012. Changes in the fair value of the derivative component, a $268 million recorded liability at December 31, 2012, are recorded in our Statements of Consolidated Income and, therefore, we are exposed to changes in the fair value of the derivative component as a result of changes in the underlying risk-free interest rate. If the risk-free interest rate were to increase by 10% from December 31, 2012 levels, the fair value of the derivative component liability would increase by approximately $7 million, which would be recorded as an unrealized loss in our Statements of Consolidated Income.



## Equity Market Value Risk

We are exposed to equity market value risk through our ownership of 7.2 million shares of TW Common, 1.8 million shares of TWC Common and 0.7 million shares of AOL Common, which we hold to facilitate our ability to meet our obligations under the ZENS. Please read Note 9 to our consolidated financial statements for a discussion of our ZENS obligation. A decrease of 10% from the December 31, 2012 aggregate market value of these shares would result in a net loss of approximately $15 million, which would be recorded as an unrealized loss in our Statements of Consolidated Income.

## Commodity Price Risk From Non-Trading Activities

We use derivative instruments as economic hedges to offset the commodity price exposure inherent in our businesses. The stand-alone commodity risk created by these instruments, without regard to the offsetting effect of the underlying exposure these instruments are intended to hedge, is described below. We measure the commodity risk of our non-trading energy derivatives using a sensitivity analysis. The sensitivity analysis performed on our non-trading energy derivatives measures the potential loss in fair value based on a hypothetical 10% movement in energy prices. At December 31, 2012, the recorded fair value of our non-trading energy derivatives was a net asset of $17 million (before collateral), all of which is related to our Competitive Natural Gas Sales and Services business segment. An increase of 10% in the market prices of energy commodities from their December 31, 2012 levels would have decreased the fair value of our non-trading energy derivatives net asset by $1 million.

The above analysis of the non-trading energy derivatives utilized for commodity price risk management purposes does not include the favorable impact that the same hypothetical price movement would have on our non-derivative physical purchases and sales of natural gas to which the hedges relate. Furthermore, the non-trading energy derivative portfolio is managed to complement the physical transaction portfolio, reducing overall risks within limits. Therefore, the adverse impact to the fair value of the portfolio of non-trading energy derivatives held for hedging purposes associated with the hypothetical changes in commodity prices referenced above is expected to be substantially offset by a favorable impact on the underlying hedged physical transactions.



## REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Board of Directors and Shareholders of CenterPoint Energy, Inc.
Houston, Texas

We have audited the accompanying consolidated balance sheets of CenterPoint Energy, Inc. and subsidiaries (the "Company") as of December 31, 2012 and 2011, and the related statements of consolidated income, comprehensive income, shareholders' equity, and cash flows for each of the three years in the period ended December 31, 2012. These financial statements are the responsibility of the Company's management. Our responsibility is to express an opinion on these financial statements based on our audits.

We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements. An audit also includes assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion.

In our opinion, such consolidated financial statements present fairly, in all material respects, the financial position of CenterPoint Energy, Inc. and subsidiaries at December 31, 2012 and 2011, and the results of their operations and their cash flows for each of the three years in the period ended December 31, 2012, in conformity with accounting principles generally accepted in the United States of America.

We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the Company's internal control over financial reporting as of December 31, 2012, based on the criteria established in Internal Control—Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission and our report dated February 27, 2013 expressed an unqualified opinion on the Company's internal control over financial reporting.

/s/ DELOITTE & TOUCHE LLP

Houston, Texas
February 27, 2013



# REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Board of Directors and Shareholders of

CenterPoint Energy, Inc.

Houston, Texas

We have audited the internal control over financial reporting of CenterPoint Energy, Inc. and subsidiaries (the "Company") as of December 31, 2012, based on criteria established in Internal Control — Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission. The Company's management is responsible for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal control over financial reporting, included in the accompanying Management's Annual Report on Internal Control Over Financial Reporting. Our responsibility is to express an opinion on the Company's internal control over financial reporting based on our audit.

We conducted our audit in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, testing and evaluating the design and operating effectiveness of internal control based on the assessed risk, and performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.

A company's internal control over financial reporting is a process designed by, or under the supervision of, the company's principal executive and principal financial officers, or persons performing similar functions, and effected by the company's board of directors, management, and other personnel to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company's internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company's assets that could have a material effect on the financial statements.

Because of the inherent limitations of internal control over financial reporting, including the possibility of collusion or improper management override of controls, material misstatements due to error or fraud may not be prevented or detected on a timely basis. Also, projections of any evaluation of the effectiveness of the internal control over financial reporting to future periods are subject to the risk that the controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

In our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2012, based on the criteria established in Internal Control — Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission.

We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the consolidated financial statements as of and for the year ended December 31, 2012 of the Company and our report dated February 27, 2013 expressed an unqualified opinion on those financial statements.

/s/ DELOITTE & TOUCHE LLP

Houston, Texas

February 27, 2013



# MANAGEMENT'S ANNUAL REPORT ON INTERNAL CONTROL OVER FINANCIAL REPORTING

Our management is responsible for establishing and maintaining adequate internal control over financial reporting. Internal control over financial reporting is defined in Rule 13a-15(f) or 15d-15(f) promulgated under the Securities Exchange Act of 1934 as a process designed by, or under the supervision of, the company’s principal executive and principal financial officers and effected by the company’s board of directors, management and other personnel, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles and includes those policies and procedures that:

- Pertain to the maintenance of records that in reasonable detail accurately and fairly reflect the transactions and dispositions of the assets of the company;

- Provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and

- Provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use or disposition of the company’s assets that could have a material effect on the financial statements.

Management has designed its internal control over financial reporting to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements in accordance with accounting principles generally accepted in the United States of America. Management’s assessment included review and testing of both the design effectiveness and operating effectiveness of controls over all relevant assertions related to all significant accounts and disclosures in the financial statements.

All internal control systems, no matter how well designed, have inherent limitations. Therefore, even those systems determined to be effective can provide only reasonable assurance with respect to financial statement preparation and presentation. Projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

Under the supervision and with the participation of our management, including our principal executive officer and principal financial officer, we conducted an evaluation of the effectiveness of our internal control over financial reporting based on the framework in Internal Control — Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission. Based on our evaluation under the framework in Internal Control — Integrated Framework, our management has concluded that our internal control over financial reporting was effective as of December 31, 2012.

Deloitte & Touche LLP, the Company’s independent registered public accounting firm, has issued an attestation report on the effectiveness of our internal control over financial reporting as of December 31, 2012 which is included herein on page 56.

/s/ DAVID M. MCCLANAHAN

President and Chief Executive Officer

/s/ GARY L. WHITLOCK

Executive Vice President and Chief

Financial Officer

February 27, 2013



## CENTERPOINT ENERGY, INC. AND SUBSIDIARIES
STATEMENTS OF CONSOLIDATED INCOME

<table><tr><td rowspan="3"></td><td colspan="4">Year Ended December 31,</td></tr><tr><td>2010</td><td colspan="2">2011</td><td>2012</td></tr><tr><td colspan="4">(in millions, except per share amounts)</td></tr><tr><td>Revenues</td><td>$     8,785</td><td>$     8,450</td><td>$     7,452</td><td></td></tr><tr><td>Expenses:</td><td></td><td></td><td></td><td></td></tr><tr><td>Natural gas</td><td>4,574</td><td>4,055</td><td>2,873</td><td></td></tr><tr><td>Operation and maintenance</td><td>1,719</td><td>1,835</td><td>1,874</td><td></td></tr><tr><td>Depreciation and amortization</td><td>864</td><td>886</td><td>1,050</td><td></td></tr><tr><td>Taxes other than income taxes</td><td>379</td><td>376</td><td>365</td><td></td></tr><tr><td>Goodwill impairment</td><td>—</td><td>—</td><td>252</td><td></td></tr><tr><td>Total</td><td>7,536</td><td>7,152</td><td>6,414</td><td></td></tr><tr><td>Operating Income</td><td>1,249</td><td>1,298</td><td>1,038</td><td></td></tr><tr><td>Other Income (Expense):</td><td></td><td></td><td></td><td></td></tr><tr><td>Gain on marketable securities</td><td>67</td><td>19</td><td>154</td><td></td></tr><tr><td>Gain (loss) on indexed debt securities</td><td>(31)</td><td>35</td><td>(71)</td><td></td></tr><tr><td>Interest and other finance charges</td><td>(481)</td><td>(456)</td><td>(422)</td><td></td></tr><tr><td>Interest on transition and system restoration bonds</td><td>(140)</td><td>(127)</td><td>(147)</td><td></td></tr><tr><td>Equity in earnings of unconsolidated affiliates</td><td>29</td><td>30</td><td>31</td><td></td></tr><tr><td>Return on true-up balance</td><td>—</td><td>352</td><td>—</td><td></td></tr><tr><td>Step acquisition gain</td><td>—</td><td>—</td><td>136</td><td></td></tr><tr><td>Other, net</td><td>12</td><td>23</td><td>38</td><td></td></tr><tr><td>Total</td><td>(544)</td><td>(124)</td><td>(281)</td><td></td></tr><tr><td>Income Before Income Taxes and Extraordinary Item</td><td>705</td><td>1,174</td><td>757</td><td></td></tr><tr><td>Income tax expense</td><td>263</td><td>404</td><td>340</td><td></td></tr><tr><td>Income Before Extraordinary Item</td><td>442</td><td>770</td><td>417</td><td></td></tr><tr><td>Extraordinary Item, net of tax</td><td>—</td><td>587</td><td>—</td><td></td></tr><tr><td>Net Income</td><td>$     442</td><td>$     1,357</td><td>$     417</td><td></td></tr><tr><td>Basic Earnings Per Share:</td><td></td><td></td><td></td><td></td></tr><tr><td>Income Before Extraordinary Item</td><td>$     1.08</td><td>$     1.81</td><td>$     0.98</td><td></td></tr><tr><td>Extraordinary Item, net of tax</td><td>—</td><td>1.38</td><td>—</td><td></td></tr><tr><td>Net Income</td><td>$     1.08</td><td>$     3.19</td><td>$     0.98</td><td></td></tr><tr><td>Diluted Earnings Per Share:</td><td></td><td></td><td></td><td></td></tr><tr><td>Income Before Extraordinary Item</td><td>$     1.07</td><td>$     1.80</td><td>$     0.97</td><td></td></tr><tr><td>Extraordinary Item, net of tax</td><td>—</td><td>1.37</td><td>—</td><td></td></tr><tr><td>Net Income</td><td>$     1.07</td><td>$     3.17</td><td>$     0.97</td><td></td></tr><tr><td>Dividends Declared Per Share</td><td>$     0.78</td><td>$     0.79</td><td>$     0.81</td><td></td></tr><tr><td>Weighted Average Shares Outstanding, Basic</td><td>410</td><td>426</td><td>427</td><td></td></tr><tr><td>Weighted Average Shares Outstanding, Diluted</td><td>413</td><td>429</td><td>430</td><td></td></tr></table>

See Notes to Consolidated Financial Statements



## CENTERPOINT ENERGY, INC. AND SUBSIDIARIES
STATEMENTS OF CONSOLIDATED COMPREHENSIVE INCOME

<table><tr><td rowspan="3"></td><td colspan="5">Year Ended December 31,</td></tr><tr><td colspan="2">2010</td><td colspan="2">2011</td><td>2012</td></tr><tr><td colspan="5">(in millions)</td></tr><tr><td>Net income</td><td>$ 442</td><td>$ 1,357</td><td>$ 417</td><td></td><td></td></tr><tr><td>Other comprehensive income (loss):</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Adjustment to pension and other postretirement plans (net of tax of $5, $7 and $2)</td><td>6</td><td>(16)</td><td></td><td></td><td>(2)</td></tr><tr><td>Reclassification of deferred loss from cash flow hedges realized in net income (net of tax of $-0-, $-0- and $-0-)</td><td>1</td><td>—</td><td></td><td>—</td><td></td></tr><tr><td>Other comprehensive income (loss)</td><td>7</td><td>(16)</td><td></td><td>(2)</td><td></td></tr><tr><td>Comprehensive income</td><td>$ 449</td><td>$ 1,341</td><td>$ 415</td><td></td><td></td></tr></table>

See Notes to Consolidated Financial Statements



## CENTERPOINT ENERGY, INC. AND SUBSIDIARIES
CONSOLIDATED BALANCE SHEETS

<table><tr><td rowspan="2"></td><td>December 31, 2011</td><td>December 31, 2012</td></tr><tr><td colspan="2">(in millions)</td></tr><tr><td>ASSETS</td><td></td><td></td></tr><tr><td>Current Assets:</td><td></td><td></td></tr><tr><td>Cash and cash equivalents ($220 and $266 related to VIEs at December 31, 2011 and 2012, respectively)</td><td>$ 220</td><td>$ 646</td></tr><tr><td>Investment in marketable securities</td><td>386</td><td>540</td></tr><tr><td>Accounts receivable, net ($52 and $68 related to VIEs at December 31, 2011 and 2012, respectively)</td><td>773</td><td>768</td></tr><tr><td>Accrued unbilled revenues</td><td>326</td><td>339</td></tr><tr><td>Inventory</td><td>353</td><td>322</td></tr><tr><td>Non-trading derivative assets</td><td>87</td><td>36</td></tr><tr><td>Taxes receivable</td><td>—</td><td>7</td></tr><tr><td>Prepaid expense and other current assets ($42 and $54 related to VIEs at December 31, 2011 and 2012, respectively)</td><td>192</td><td>216</td></tr><tr><td>Total current assets</td><td>2,337</td><td>2,874</td></tr><tr><td>Property, Plant and Equipment, net</td><td>12,402</td><td>13,597</td></tr><tr><td>Other Assets:</td><td></td><td></td></tr><tr><td>Goodwill</td><td>1,696</td><td>1,468</td></tr><tr><td>Regulatory assets ($2,289 and $3,545 related to VIEs at December 31, 2011 and 2012, respectively)</td><td>4,619</td><td>4,324</td></tr><tr><td>Non-trading derivative assets</td><td>20</td><td>6</td></tr><tr><td>Investment in unconsolidated affiliates</td><td>472</td><td>405</td></tr><tr><td>Other</td><td>157</td><td>197</td></tr><tr><td>Total other assets</td><td>6,964</td><td>6,400</td></tr><tr><td>Total Assets</td><td>$ 21,703</td><td>$ 22,871</td></tr><tr><td>LIABILITIES AND SHAREHOLDERS&#x27; EQUITY</td><td></td><td></td></tr><tr><td>Current Liabilities:</td><td></td><td></td></tr><tr><td>Short-term borrowings</td><td>$ 62</td><td>$ 38</td></tr><tr><td>Current portion of VIE transition and system restoration bonds long-term debt</td><td>307</td><td>447</td></tr><tr><td>Current portion of indexed debt</td><td>131</td><td>138</td></tr><tr><td>Current portion of other long-term debt</td><td>46</td><td>815</td></tr><tr><td>Indexed debt securities derivative</td><td>197</td><td>268</td></tr><tr><td>Accounts payable</td><td>560</td><td>561</td></tr><tr><td>Taxes accrued</td><td>207</td><td>160</td></tr><tr><td>Interest accrued</td><td>164</td><td>150</td></tr><tr><td>Non-trading derivative liabilities</td><td>46</td><td>14</td></tr><tr><td>Accumulated deferred income taxes, net</td><td>507</td><td>604</td></tr><tr><td>Other</td><td>366</td><td>380</td></tr><tr><td>Total current liabilities</td><td>2,593</td><td>3,575</td></tr><tr><td>Other Liabilities:</td><td></td><td></td></tr><tr><td>Accumulated deferred income taxes, net</td><td>3,832</td><td>4,153</td></tr><tr><td>Non-trading derivative liabilities</td><td>6</td><td>2</td></tr><tr><td>Benefit obligations</td><td>1,065</td><td>1,143</td></tr><tr><td>Regulatory liabilities</td><td>1,039</td><td>1,093</td></tr><tr><td>Other</td><td>305</td><td>247</td></tr><tr><td>Total other liabilities</td><td>6,247</td><td>6,638</td></tr><tr><td>Long-term Debt:</td><td></td><td></td></tr><tr><td>VIE transition and system restoration bonds</td><td>2,215</td><td>3,400</td></tr><tr><td>Other</td><td>6,426</td><td>4,957</td></tr><tr><td>Total long-term debt</td><td>8,641</td><td>8,357</td></tr><tr><td>Commitments and Contingencies (Note 13)</td><td></td><td></td></tr><tr><td>Shareholders&#x27; Equity</td><td>4,222</td><td>4,301</td></tr><tr><td>Total Liabilities and Shareholders&#x27; Equity</td><td>$ 21,703</td><td>$ 22,871</td></tr></table>



## CENTERPOINT ENERGY, INC. AND SUBSIDIARIES
STATEMENTS OF CONSOLIDATED CASH FLOWS

<table><tr><td rowspan="3"></td><td colspan="4">Year Ended December 31,</td></tr><tr><td>2010</td><td colspan="2">2011</td><td>2012</td></tr><tr><td colspan="4">(in millions)</td></tr><tr><td>Cash Flows from Operating Activities:</td><td></td><td></td><td></td><td></td></tr><tr><td>Net income</td><td>$     442</td><td>$     1,357</td><td>$     417</td><td></td></tr><tr><td>Adjustments to reconcile net income to net cash provided by operating activities:</td><td></td><td></td><td></td><td></td></tr><tr><td>Depreciation and amortization</td><td>864</td><td>886</td><td>1,050</td><td></td></tr><tr><td>Amortization of deferred financing costs</td><td>27</td><td>30</td><td>32</td><td></td></tr><tr><td>Deferred income taxes</td><td>199</td><td>443</td><td>328</td><td></td></tr><tr><td>Extraordinary item, net of tax</td><td>—</td><td>(587)</td><td>—</td><td></td></tr><tr><td>Return on true-up balance</td><td>—</td><td>(352)</td><td>—</td><td></td></tr><tr><td>Goodwill impairment</td><td>—</td><td>—</td><td>252</td><td></td></tr><tr><td>Step acquisition gain</td><td>—</td><td>—</td><td>(136)</td><td></td></tr><tr><td>Unrealized gain on marketable securities</td><td>(67)</td><td>(19)</td><td>(154)</td><td></td></tr><tr><td>Unrealized loss (gain) on indexed debt securities</td><td>31</td><td>(35)</td><td>71</td><td></td></tr><tr><td>Write-down of natural gas inventory</td><td>6</td><td>11</td><td>4</td><td></td></tr><tr><td>Equity in earnings of unconsolidated affiliates, net of distributions</td><td>13</td><td>8</td><td>8</td><td></td></tr><tr><td>Pension contributions</td><td>(8)</td><td>(75)</td><td>(82)</td><td></td></tr><tr><td>Changes in other assets and liabilities:</td><td></td><td></td><td></td><td></td></tr><tr><td>Accounts receivable and unbilled revenues, net</td><td>101</td><td>40</td><td>10</td><td></td></tr><tr><td>Inventory</td><td>(54)</td><td>11</td><td>27</td><td></td></tr><tr><td>Taxes receivable</td><td>(138)</td><td>138</td><td>(7)</td><td></td></tr><tr><td>Accounts payable</td><td>(34)</td><td>(81)</td><td>(6)</td><td></td></tr><tr><td>Fuel cost recovery</td><td>(9)</td><td>(70)</td><td>(52)</td><td></td></tr><tr><td>Non-trading derivatives, net</td><td>(5)</td><td>(13)</td><td>20</td><td></td></tr><tr><td>Margin deposits, net</td><td>7</td><td>34</td><td>53</td><td></td></tr><tr><td>Interest and taxes accrued</td><td>(2)</td><td>44</td><td>(62)</td><td></td></tr><tr><td>Net regulatory assets and liabilities</td><td>14</td><td>31</td><td>66</td><td></td></tr><tr><td>Other current assets</td><td>(2)</td><td>12</td><td>(12)</td><td></td></tr><tr><td>Other current liabilities</td><td>(1)</td><td>18</td><td>18</td><td></td></tr><tr><td>Other assets</td><td>(8)</td><td>(9)</td><td>(18)</td><td></td></tr><tr><td>Other liabilities</td><td>12</td><td>42</td><td>16</td><td></td></tr><tr><td>Other, net</td><td>(2)</td><td>24</td><td>17</td><td></td></tr><tr><td>Net cash provided by operating activities</td><td>1,386</td><td>1,888</td><td>1,860</td><td></td></tr><tr><td>Cash Flows from Investing Activities:</td><td></td><td></td><td></td><td></td></tr><tr><td>Capital expenditures, net of acquisitions</td><td>(1,509)</td><td>(1,303)</td><td>(1,212)</td><td></td></tr><tr><td>Acquisitions, net of cash acquired</td><td>—</td><td>—</td><td>(360)</td><td></td></tr><tr><td>Increase in restricted cash of transition and system restoration bond companies</td><td>(5)</td><td>(3)</td><td>(13)</td><td></td></tr><tr><td>Investment in unconsolidated affiliates</td><td>(18)</td><td>(12)</td><td>(5)</td><td></td></tr><tr><td>Cash received from U.S. Department of Energy grant</td><td>90</td><td>110</td><td>—</td><td></td></tr><tr><td>Other, net</td><td>22</td><td>2</td><td>(13)</td><td></td></tr><tr><td>Net cash used in investing activities</td><td>(1,420)</td><td>(1,206)</td><td>(1,603)</td><td></td></tr><tr><td>Cash Flows from Financing Activities:</td><td></td><td></td><td></td><td></td></tr><tr><td>Increase (decrease) in short-term borrowings, net</td><td>(2)</td><td>9</td><td>(24)</td><td></td></tr><tr><td>Proceeds from (payments of) commercial paper, net</td><td>183</td><td>102</td><td>(285)</td><td></td></tr><tr><td>Proceeds from long-term debt</td><td>—</td><td>550</td><td>2,495</td><td></td></tr><tr><td>Payments of long-term debt</td><td>(783)</td><td>(909)</td><td>(1,590)</td><td></td></tr><tr><td>Cash paid for debt exchange and debt retirement</td><td>—</td><td>(58)</td><td>(69)</td><td></td></tr><tr><td>Debt issuance costs</td><td>(2)</td><td>(24)</td><td>(16)</td><td></td></tr><tr><td>Payment of common stock dividends</td><td>(319)</td><td>(337)</td><td>(346)</td><td></td></tr><tr><td>Proceeds from issuance of common stock, net</td><td>416</td><td>6</td><td>4</td><td></td></tr><tr><td>Net cash provided by (used in) financing activities</td><td>(507)</td><td>(661)</td><td>169</td><td></td></tr><tr><td>Net Increase (Decrease) in Cash and Cash Equivalents</td><td>(541)</td><td>21</td><td>426</td><td></td></tr><tr><td>Cash and Cash Equivalents at Beginning of Year</td><td>740</td><td>199</td><td>220</td><td></td></tr><tr><td>Cash and Cash Equivalents at End of Year</td><td>$     199</td><td>$     220</td><td>$     646</td><td></td></tr><tr><td>Supplemental Disclosure of Cash Flow Information:</td><td></td><td></td><td></td><td></td></tr><tr><td>Cash Payments:</td><td></td><td></td><td></td><td></td></tr><tr><td>Interest, net of capitalized interest</td><td>$     609</td><td>$     565</td><td>$     556</td><td></td></tr><tr><td>Income taxes (refunds), net</td><td>207</td><td>(205)</td><td>46</td><td></td></tr><tr><td>Non-cash transactions:</td><td></td><td></td><td></td><td></td></tr><tr><td>Accounts payable related to capital expenditures</td><td>137</td><td>110</td><td>110</td><td></td></tr></table>

See Notes to Consolidated Financial Statements



## CENTERPOINT ENERGY, INC. AND SUBSIDIARIES
STATEMENTS OF CONSOLIDATED SHAREHOLDERS' EQUITY

<table><tr><td rowspan="2"></td><td colspan="2">2010</td><td colspan="2">2011</td><td colspan="2">2012</td></tr><tr><td>Shares</td><td>Amount</td><td>Shares</td><td>Amount</td><td>Shares</td><td>Amount</td></tr><tr><td></td><td colspan="6">(in millions of dollars and shares)</td></tr><tr><td>Preference Stock, none outstanding</td><td>—</td><td>$</td><td>—</td><td>$</td><td>—</td><td>$</td></tr><tr><td>Cumulative Preferred Stock, $0.01 par value; authorized 20,000,000 shares, none outstanding</td><td>—</td><td>—</td><td>—</td><td>—</td><td>—</td><td>—</td></tr><tr><td>Common Stock, $0.01 par value; authorized 1,000,000,000 shares</td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Balance, beginning of year</td><td>391</td><td>4</td><td>425</td><td>4</td><td>426</td><td>4</td></tr><tr><td>Issuances related to benefit and investment plans</td><td>9</td><td>—</td><td>1</td><td>—</td><td>2</td><td>—</td></tr><tr><td>Issuances related to public offerings</td><td>25</td><td>—</td><td>—</td><td>—</td><td>—</td><td>—</td></tr><tr><td>Balance, end of year</td><td>425</td><td>4</td><td>426</td><td>4</td><td>428</td><td>4</td></tr><tr><td>Additional Paid-in-Capital</td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Balance, beginning of year</td><td>3,671</td><td></td><td>4,100</td><td></td><td>4,120</td><td></td></tr><tr><td>Issuances related to benefit and investment plans</td><td>114</td><td></td><td>20</td><td></td><td>10</td><td></td></tr><tr><td>Issuances related to public offerings, net of issuance costs</td><td>315</td><td></td><td>—</td><td></td><td>—</td><td></td></tr><tr><td>Balance, end of year</td><td>4,100</td><td></td><td>4,120</td><td></td><td>4,130</td><td></td></tr><tr><td>Retained Earnings (Accumulated Deficit)</td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Balance, beginning of year</td><td>(912)</td><td></td><td>(789)</td><td></td><td>231</td><td></td></tr><tr><td>Net income</td><td>442</td><td></td><td>1,357</td><td></td><td>417</td><td></td></tr><tr><td>Common stock dividends</td><td>(319)</td><td></td><td>(337)</td><td></td><td>(346)</td><td></td></tr><tr><td>Balance, end of year</td><td>(789)</td><td></td><td>231</td><td></td><td>302</td><td></td></tr><tr><td>Accumulated Other Comprehensive Loss</td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Balance, end of year:</td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Adjustment to pension and postretirement plans</td><td>(114)</td><td></td><td>(130)</td><td></td><td>(132)</td><td></td></tr><tr><td>Net deferred loss from cash flow hedges</td><td>(3)</td><td></td><td>(3)</td><td></td><td>(3)</td><td></td></tr><tr><td>Total accumulated other comprehensive loss, end of year</td><td>(117)</td><td></td><td>(133)</td><td></td><td>(135)</td><td></td></tr><tr><td>Total Shareholders&#x27; Equity</td><td>$ 3,198</td><td></td><td>$ 4,222</td><td></td><td>$ 4,301</td><td></td></tr></table>

See Notes to Consolidated Financial Statements



# CENTERPOINT ENERGY, INC. AND SUBSIDIARIES

# NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

## (1) Background

CenterPoint Energy, Inc. (CenterPoint Energy) is a public utility holding company. CenterPoint Energy’s operating subsidiaries own and operate electric transmission and distribution facilities, natural gas distribution facilities, interstate pipelines and natural gas gathering, processing and treating facilities. As of December 31, 2012, CenterPoint Energy’s indirect wholly owned subsidiaries included:

- CenterPoint Energy Houston Electric, LLC (CenterPoint Houston), which engages in the electric transmission and distribution business in the Texas Gulf Coast area that includes the city of Houston; and

- CenterPoint Energy Resources Corp. (CERC Corp. and, together with its subsidiaries, CERC), which owns and operates natural gas distribution systems. Subsidiaries of CERC own interstate natural gas pipelines and gas gathering systems and provide various ancillary services. A wholly owned subsidiary of CERC Corp. offers variable and fixed-price physical natural gas supplies primarily to commercial and industrial customers and electric and gas utilities.

For a description of CenterPoint Energy’s reportable business segments, see Note 16.

## (2) Summary of Significant Accounting Policies

## (a) Use of Estimates

The preparation of financial statements in conformity with generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

## (b) Principles of Consolidation

The accounts of CenterPoint Energy and its wholly owned and majority owned subsidiaries are included in the consolidated financial statements. All intercompany transactions and balances are eliminated in consolidation. CenterPoint Energy uses the equity method of accounting for investments in entities in which CenterPoint Energy has an ownership interest between 20% and 50% and exercises significant influence.

CenterPoint Energy’s investments in unconsolidated affiliates include a 50% ownership interest in Southeast Supply Header, LLC (SESH), which owns and operates a 274-mile interstate natural gas pipeline.

Prior to July 2012, CenterPoint Energy owned a 50% interest in Waskom Gas Processing Company (Waskom), a Texas general partnership, which owns and operates a natural gas processing plant and natural gas gathering assets. During 2010, CenterPoint Energy invested $20 million in Waskom. On July 31, 2012, CenterPoint Energy purchased the 50% interest that it did not already own in Waskom, as well as other gathering and related assets from a third-party for approximately $273 million. The amount of the purchase price allocated to the acquisition of the 50% interest in Waskom was approximately $201 million, with the remaining purchase price allocated to the other gathering assets, based on a discounted cash flow methodology. The $273 million purchase price was allocated as follows: $253 million to property, plant and equipment; $16 million to goodwill; and the remaining balance to other assets and liabilities. The purchase of the 50% interest in Waskom was determined to be a business combination achieved in stages, and as such CenterPoint Energy recorded a pre-tax gain of approximately $136 million on July 31, 2012, which is the result of remeasuring its original 50% interest in Waskom to fair value. As a result of the purchase, CenterPoint Energy recorded goodwill of $24 million, which includes $17 million related to Waskom (including the re-measurement of its existing 50% interest) and $7 million related to the other gathering and related assets.

Other investments, excluding marketable securities, are carried at cost.

As of December 31, 2012, CenterPoint Energy had five variable interest entities (VIEs) consisting of transition and system restoration bond companies, which it consolidates. The consolidated VIEs are wholly owned bankruptcy remote special purpose entities that were formed specifically for the purpose of securitizing transition and system restoration related property. Creditors of CenterPoint Energy have no recourse to any assets or revenues of the transition and system restoration bond companies. The



bonds issued by these VIEs are payable only from and secured by transition and system restoration property and the bondholders have no recourse to the general credit of CenterPoint Energy.

## (c) Revenues

CenterPoint Energy records revenue for electricity delivery and natural gas sales and services under the accrual method and these revenues are recognized upon delivery to customers. Electricity deliveries not billed by month-end are accrued based on daily supply volumes, applicable rates and analyses reflecting significant historical trends and experience. Natural gas sales not billed by month-end are accrued based upon estimated purchased gas volumes, estimated lost and unaccounted for gas and currently effective tariff rates. The Interstate Pipelines and Field Services business segments record revenues as transportation and processing services are provided.

## (d) Long-lived Assets and Intangibles

CenterPoint Energy records property, plant and equipment at historical cost. CenterPoint Energy expenses repair and maintenance costs as incurred.

CenterPoint Energy periodically evaluates long-lived assets, including property, plant and equipment, and specifically identifiable intangibles, when events or changes in circumstances indicate that the carrying value of these assets may not be recoverable. The determination of whether an impairment has occurred is based on an estimate of undiscounted cash flows attributable to the assets compared to the carrying value of the assets.

## (e) Regulatory Assets and Liabilities

CenterPoint Energy applies the guidance for accounting for regulated operations to the Electric Transmission & Distribution business segment and the Natural Gas Distribution business segment and to portions of the Interstate Pipelines business segment.

CenterPoint Energy’s rate-regulated businesses recognize removal costs as a component of depreciation expense in accordance with regulatory treatment. As of December 31, 2011 and 2012, these removal costs of $912 million and $919 million, respectively, are classified as regulatory liabilities in CenterPoint Energy’s Consolidated Balance Sheets. In addition, a portion of the amount of removal costs that relate to asset retirement obligations has been reclassified from a regulatory liability to an asset retirement liability in accordance with accounting guidance for conditional asset retirement obligations.

## (f) Depreciation and Amortization Expense

Depreciation and amortization is computed using the straight-line method based on economic lives or regulatory-mandated recovery periods. Amortization expense includes amortization of regulatory assets and other intangibles.

## (g) Capitalization of Interest and Allowance for Funds Used During Construction

Interest and allowance for funds used during construction (AFUDC) are capitalized as a component of projects under construction and are amortized over the assets' estimated useful lives once the assets are placed in service. AFUDC represents the composite interest cost of borrowed funds and a reasonable return on the equity funds used for construction for subsidiaries that apply the guidance for accounting for regulated operations. During 2010, 2011 and 2012, CenterPoint Energy capitalized interest and AFUDC of $9 million, $4 million and $9 million, respectively.

## (h) Income Taxes

CenterPoint Energy files a consolidated federal income tax return and follows a policy of comprehensive interperiod tax allocation. CenterPoint Energy uses the asset and liability method of accounting for deferred income taxes. Deferred income tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Investment tax credits that were deferred are being amortized over the estimated lives of the related property. A valuation allowance is established against deferred tax assets for which management believes realization is not considered to be more likely than not. CenterPoint Energy recognizes interest and penalties as a component of income tax expense.



## (i) Accounts Receivable and Allowance for Doubtful Accounts

Accounts receivable are recorded at the invoiced amount and do not bear interest. It is the policy of management to review the outstanding accounts receivable monthly, as well as the bad debt write-offs experienced in the past, and establish an allowance for doubtful accounts. Account balances are charged off against the allowance when management determines it is probable the receivable will not be recovered. Accounts receivable are net of an allowance for doubtful accounts of $25 million at both December 31, 2011 and 2012, respectively. The provision for doubtful accounts in CenterPoint Energy’s Statements of Consolidated Income for 2010, 2011 and 2012 was $30 million, $26 million and $16 million, respectively.

## (j) Inventory

Inventory consists principally of materials and supplies and natural gas. Materials and supplies are valued at the lower of average cost or market. Materials and supplies are recorded to inventory when purchased and subsequently charged to expense or capitalized to plant when installed. Natural gas inventories of CenterPoint Energy’s Competitive Natural Gas Sales and Services business segment are also primarily valued at the lower of average cost or market. Natural gas inventories of CenterPoint Energy’s Natural Gas Distribution business segment are primarily valued at weighted average cost. During 2011 and 2012, CenterPoint Energy recorded $11 million and $4 million, respectively, in write-downs of natural gas inventory to the lower of average cost or market.

<table><tr><td rowspan="3"></td><td colspan="3">December 31,</td></tr><tr><td>2011</td><td colspan="2">2012</td></tr><tr><td colspan="3">(in millions)</td></tr><tr><td>Materials and supplies</td><td>$</td><td>166</td><td>$</td></tr><tr><td>Natural gas</td><td></td><td>187</td><td></td></tr><tr><td>Total inventory</td><td>$</td><td>353</td><td>$</td></tr></table>

## (k) Derivative Instruments

CenterPoint Energy is exposed to various market risks. These risks arise from transactions entered into in the normal course of business. CenterPoint Energy utilizes derivative instruments such as physical forward contracts, swaps and options to mitigate the impact of changes in commodity prices and weather on its operating results and cash flows. Such derivatives are recognized in CenterPoint Energy’s Consolidated Balance Sheets at their fair value unless CenterPoint Energy elects the normal purchase and sales exemption for qualified physical transactions. A derivative may be designated as a normal purchase or normal sale if the intent is to physically receive or deliver the product for use or sale in the normal course of business.

CenterPoint Energy has a Risk Oversight Committee composed of corporate and business segment officers that oversees all commodity price, weather and credit risk activities, including CenterPoint Energy’s marketing, risk management services and hedging activities. The committee’s duties are to establish CenterPoint Energy’s commodity risk policies, allocate board-approved commercial risk limits, approve the use of new products and commodities, monitor positions and ensure compliance with CenterPoint Energy’s risk management policies and procedures and limits established by CenterPoint Energy’s board of directors.

CenterPoint Energy’s policies prohibit the use of leveraged financial instruments. A leveraged financial instrument, for this purpose, is a transaction involving a derivative whose financial impact will be based on an amount other than the notional amount or volume of the instrument.

## (I) Investments in Other Debt and Equity Securities

CenterPoint Energy reports securities classified as trading at estimated fair value in its Consolidated Balance Sheets, and any unrealized holding gains and losses are recorded as other income (expense) in its Statements of Consolidated Income.

## (m) Environmental Costs

CenterPoint Energy expenses or capitalizes environmental expenditures, as appropriate, depending on their future economic benefit. CenterPoint Energy expenses amounts that relate to an existing condition caused by past operations that do not have future economic benefit. CenterPoint Energy records undiscounted liabilities related to these future costs when environmental assessments and/or remediation activities are probable and the costs can be reasonably estimated.



## (n) Statements of Consolidated Cash Flows

For purposes of reporting cash flows, CenterPoint Energy considers cash equivalents to be short-term, highly-liquid investments with maturities of three months or less from the date of purchase. In connection with the issuance of transition bonds and system restoration bonds, CenterPoint Energy was required to establish restricted cash accounts to collateralize the bonds that were issued in these financing transactions. These restricted cash accounts are not available for withdrawal until the maturity of the bonds and are not included in cash and cash equivalents. These restricted cash accounts of $42 million and $54 million at December 31, 2011 and 2012, respectively, are included in other current assets in CenterPoint Energy's Consolidated Balance Sheets. Cash and cash equivalents included $220 million and $266 million at December 31, 2011 and 2012, respectively, that was held by CenterPoint Energy's transition and system restoration bond subsidiaries solely to support servicing the transition and system restoration bonds.

## (o) New Accounting Pronouncements

Management believes the impact of recently issued standards, which are not yet effective, will not have a material impact on CenterPoint Energy’s consolidated financial position, results of operations or cash flows upon adoption.

## (3) Property, Plant and Equipment

## (a) Property, Plant and Equipment

Property, plant and equipment includes the following:

<table><tr><td rowspan="3"></td><td rowspan="3">Weighted Average Useful Lives (Years)</td><td colspan="3">December 31,</td></tr><tr><td>2011</td><td>2012</td><td></td></tr><tr><td colspan="3">(in millions)</td></tr><tr><td>Electric Transmission &amp; Distribution</td><td>31</td><td>$     7,827</td><td>$     8,204</td><td></td></tr><tr><td>Natural Gas Distribution</td><td>32</td><td>3,959</td><td>4,321</td><td></td></tr><tr><td>Competitive Natural Gas Sales and Services</td><td>26</td><td>76</td><td>80</td><td></td></tr><tr><td>Interstate Pipelines</td><td>56</td><td>2,675</td><td>2,803</td><td></td></tr><tr><td>Field Services</td><td>42</td><td>1,754</td><td>2,359</td><td></td></tr><tr><td>Other property</td><td>24</td><td>577</td><td>610</td><td></td></tr><tr><td>Total</td><td></td><td>16,868</td><td>18,377</td><td></td></tr><tr><td>Accumulated depreciation and amortization:</td><td></td><td></td><td></td><td></td></tr><tr><td>Electric Transmission &amp; Distribution</td><td></td><td>2,784</td><td>2,839</td><td></td></tr><tr><td>Natural Gas Distribution</td><td></td><td>1,069</td><td>1,194</td><td></td></tr><tr><td>Competitive Natural Gas Sales and Services</td><td></td><td>20</td><td>25</td><td></td></tr><tr><td>Interstate Pipelines</td><td></td><td>302</td><td>355</td><td></td></tr><tr><td>Field Services</td><td></td><td>72</td><td>118</td><td></td></tr><tr><td>Other property</td><td></td><td>219</td><td>249</td><td></td></tr><tr><td>Total accumulated depreciation and amortization</td><td></td><td>4,466</td><td>4,780</td><td></td></tr><tr><td>Property, plant and equipment, net</td><td></td><td>$     12,402</td><td>$     13,597</td><td></td></tr></table>

## (b) Depreciation and Amortization

The following table presents depreciation and amortization expense for 2010, 2011 and 2012 (in millions).

<table><tr><td></td><td>2010</td><td>2011</td><td>2012</td></tr><tr><td>Depreciation expense</td><td>$     531</td><td>$     529</td><td>$     562</td></tr><tr><td>Amortization expense</td><td>333</td><td>357</td><td>488</td></tr><tr><td>Total depreciation and amortization expense</td><td>$     864</td><td>$     886</td><td>$     1,050</td></tr></table>



## (c) Asset Retirement Obligations

A reconciliation of the changes in the asset retirement obligation (ARO) liability is as follows (in millions):

<table><tr><td rowspan="2"></td><td colspan="3">December 31,</td></tr><tr><td>2011</td><td>2012</td><td></td></tr><tr><td>Beginning balance</td><td>$     84</td><td>$     156</td><td></td></tr><tr><td>Accretion expense</td><td>5</td><td>7</td><td></td></tr><tr><td>Revisions in estimates of cash flows</td><td>67</td><td>1</td><td></td></tr><tr><td>Ending balance</td><td>$     156</td><td>$     164</td><td></td></tr></table>

The increase of $67 million in the ARO from the revision of estimate in 2011 is primarily attributable to an increase in the disposal costs used in the cash flow assumptions. There were no material additions or settlements during the years ended December 31, 2011 and 2012.

## (4) Goodwill

Goodwill by reportable business segment as of December 31, 2011 and changes in the carrying amount of goodwill as of December 31, 2012 are as follows (in millions):

<table><tr><td></td><td>December 31, 2011</td><td>Impairment Charge</td><td>Acquisition</td><td>December 31, 2012</td></tr><tr><td>Natural Gas Distribution</td><td>$     746</td><td>$      —</td><td>$      —</td><td>$     746</td></tr><tr><td>Interstate Pipelines</td><td>579</td><td>—</td><td>—</td><td>579</td></tr><tr><td>Competitive Natural Gas Sales and Services</td><td>335</td><td>252</td><td>—</td><td>83</td></tr><tr><td>Field Services</td><td>25</td><td>—</td><td>24</td><td>49</td></tr><tr><td>Other Operations</td><td>11</td><td>—</td><td>—</td><td>11</td></tr><tr><td>Total</td><td>$     1,696</td><td>$     252</td><td>$     24</td><td>$     1,468</td></tr></table>

CenterPoint Energy performs its goodwill impairment tests at least annually and evaluates goodwill when events or changes in circumstances indicate that its carrying value may not be recoverable. The impairment evaluation for goodwill is performed by using a two-step process. In the first step, the fair value of each reporting unit is compared with the carrying amount of the reporting unit, including goodwill. The estimated fair value of the reporting unit is generally determined on the basis of discounted cash flows. If the estimated fair value of the reporting unit is less than the carrying amount of the reporting unit, then a second step must be completed in order to determine the amount of the goodwill impairment that should be recorded. In the second step, the implied fair value of the reporting unit's goodwill is determined by allocating the reporting unit's fair value to all of its assets and liabilities other than goodwill (including any unrecognized intangible assets) in a manner similar to a purchase price allocation. The resulting implied fair value of the goodwill that results from the application of this second step is then compared to the carrying amount of the goodwill and an impairment charge is recorded for the difference.

CenterPoint Energy performed its annual impairment test in the third quarter of 2012 and determined that a non-cash goodwill impairment charge in the amount of $252 million was required for the Competitive Natural Gas Sales and Services reportable segment. CenterPoint Energy also determined that no impairment charge was required for any other reportable segment. Other intangibles were not material as of December 31, 2011 and 2012.

CenterPoint Energy estimated the value of the Competitive Natural Gas Sales and Services reporting unit using an income approach. Under this approach, the fair value of the reporting unit is determined by using the present value of future expected cash flows, which are based on management projections of revenue growth, gross margin, and overall market conditions. These estimated future cash flows are then discounted using a rate that approximates the weighted average cost of capital of a market participant.

The Competitive Natural Gas Sales and Services reporting unit fair value analysis resulted in an implied fair value of goodwill of $83 million for this reporting unit, and as a result, a non-cash impairment charge in the amount of $252 million was recorded in the third quarter of 2012. The adverse wholesale market conditions facing CenterPoint Energy's energy services business,



specifically the prospects for continued low geographic and seasonal price differentials for natural gas, led to a reduction in the estimate of the fair value of goodwill associated with this reporting unit.

## (5) Regulatory Matters

## (a) Regulatory Assets and Liabilities

The following is a list of regulatory assets/liabilities reflected on CenterPoint Energy’s Consolidated Balance Sheets as of December 31, 2011 and 2012:

<table><tr><td rowspan="3"></td><td colspan="3">December 31,</td></tr><tr><td>2011</td><td>2012</td><td></td></tr><tr><td colspan="3">(in millions)</td></tr><tr><td>Securitized regulatory assets</td><td>$ 2,289</td><td>$ 3,545</td><td></td></tr><tr><td>True-up Settlement (1)</td><td>1,684</td><td>—</td><td></td></tr><tr><td>Unrecognized equity return (2)</td><td>(600)</td><td>(553)</td><td></td></tr><tr><td>Unamortized loss on reacquired debt</td><td>56</td><td>119</td><td></td></tr><tr><td>Pension and postretirement-related regulatory asset (3)</td><td>975</td><td>1,021</td><td></td></tr><tr><td>Other long-term regulatory assets (4)</td><td>215</td><td>192</td><td></td></tr><tr><td>Total regulatory assets</td><td>4,619</td><td>4,324</td><td></td></tr><tr><td>Estimated removal costs</td><td>912</td><td>919</td><td></td></tr><tr><td>Other long-term regulatory liabilities</td><td>127</td><td>174</td><td></td></tr><tr><td>Total regulatory liabilities</td><td>1,039</td><td>1,093</td><td></td></tr><tr><td>Total regulatory assets and liabilities, net</td><td>$ 3,580</td><td>$ 3,231</td><td></td></tr></table>

(1) In accordance with a final order from the Public Utility Commission of Texas, (Texas Utility Commission), the true-up settlement as of December 31, 2011 was not earning a return. The regulatory asset was securitized in January 2012 as a result of the issuance of the transition bonds described below in Note 5(b).

(2) As of December 31, 2012, CenterPoint Energy has not recognized an allowed equity return of $553 million because such return will be recognized as it is recovered in rates. During the years ended December 31, 2010, 2011 and 2012, CenterPoint Houston recognized approximately $16 million, $21 million and $47 million, respectively, of the allowed equity return.

(3) CenterPoint Houston’s actuarially determined pension and other postemployment expense in excess of the amount being recovered through rates is being deferred for rate making purposes and was addressed in its 2010 rate application pursuant to Texas law. Deferred pension and other postemployment expenses of $16 million and $14 million as of December 31, 2011 and 2012, respectively, were not earning a return.

(4) Other regulatory assets that are not earning a return were not material as of December 31, 2011 and 2012.

## (b) Resolution of True-Up Appeal

In March 2004, CenterPoint Houston filed a true-up application with the Texas Utility Commission requesting recovery of $3.7 billion, excluding interest, as allowed under the Texas Electric Choice Plan. In December 2004, the Texas Utility Commission issued its final order (True-Up Order) allowing CenterPoint Houston to recover a true-up balance of approximately $2.3 billion, which included interest through August 31, 2004, and provided for adjustment of the amount to be recovered to include interest on the balance until recovery, along with the principal portion of additional excess mitigation credits returned to customers after August 31, 2004 and certain other adjustments. To reflect the impact of the True-Up Order, in 2004 and 2005, CenterPoint Energy recorded a net after-tax extraordinary loss of $947 million.

Various parties, including CenterPoint Houston, appealed the True-Up Order. These appeals were heard first by a district court in Travis County, Texas, then by the Texas Third Court of Appeals and finally by the Texas Supreme Court. In March 2011, the Texas Supreme Court issued a unanimous ruling on such appeals in which it affirmed in part and reversed in part the decision



of the Texas Utility Commission. In June 2011, the Texas Supreme Court issued a final mandate remanding the case to the Texas Utility Commission for further proceedings (the Remand Proceeding).

In September 2011, CenterPoint Houston reached an agreement in principle with the staff of the Texas Utility Commission and certain intervenors to settle the issues in the Remand Proceeding (the Settlement). In October 2011, the Texas Utility Commission approved a final order (the Final Order) in the Remand Proceeding consistent with the Settlement. The Final Order provided that (i) CenterPoint Houston was entitled to recover an additional true-up balance of $1.695 billion (the Recoverable True-Up Balance) in the Remand Proceeding, (ii) no further interest would accrue on the Recoverable True-Up Balance, and (iii) CenterPoint Houston would reimburse certain parties for their reasonable rate case expenses.

In October 2011, the Texas Utility Commission also issued a financing order (the Financing Order) that authorized the issuance of transition bonds by CenterPoint Houston to securitize the Recoverable True-Up Balance. In January 2012, CenterPoint Energy Transition Bond Company IV, LLC (Bond Company IV), a new special purpose subsidiary of CenterPoint Houston, issued $1.695 billion of transition bonds in three tranches with interest rates ranging from 0.9012% to 3.0282% and final maturity dates ranging from April 15, 2018 to October 15, 2025. Through the issuance of these transition bonds, CenterPoint Houston recovered the Recoverable True-Up Balance, less approximately $10.4 million of offering expenses. The transition bonds will be repaid over time through a charge imposed on customers in CenterPoint Houston's service territory. The holders of the transition bonds do not have recourse to any assets or revenues of CenterPoint Houston, and the creditors of CenterPoint Houston do not have recourse to any assets or revenues of Bond Company IV, including, without limitation, the transition property transferred to Bond Company IV in connection with the issuance of the transition bonds. The transition property includes the right to impose, collect and receive an irrevocable, non-bypassable charge payable by CenterPoint Houston's retail electric customers.

As a result of the Final Order, in 2011 CenterPoint Houston recorded a pre-tax extraordinary gain of $921 million ($587 million after taxes of $334 million) and $352 million ($224 million after-tax) of Other Income related to a portion of interest on the appealed amount. An additional $405 million ($258 million after-tax) will be recorded as an equity return over the life of the transition bonds.

## (6) Stock-Based Incentive Compensation Plans and Employee Benefit Plans

## (a) Stock-Based Incentive Compensation Plans

CenterPoint Energy has long-term incentive plans (LTIPs) that provide for the issuance of stock-based incentives, including stock options, performance awards, restricted stock unit awards and restricted and unrestricted stock awards to officers, employees and non-employee directors. Approximately 14 million shares of CenterPoint Energy common stock are authorized under these plans for awards.

Equity awards are granted to employees without cost to the participants. The performance awards granted in 2010, 2011 and 2012 are distributed based upon the achievement of certain objectives over a three-year performance cycle. The stock awards granted in 2010, 2011 and 2012 are subject to the performance condition that total common dividends declared during the three-year vesting period must be at least $2.34, $2.37 and $2.43 per share, respectively. The stock awards generally vest at the end of a three-year period. Upon vesting, both the performance and stock awards are issued to the participants along with the value of dividend equivalents earned over the performance cycle or vesting period. CenterPoint Energy issues new shares in order to satisfy stock-based payments related to LTIPs.

CenterPoint Energy recorded LTIP compensation expense of $17 million, $19 million and $18 million for the years ended December 31, 2010, 2011 and 2012, respectively. This expense is included in Operation and Maintenance Expense in the Statements of Consolidated Income.

The total income tax benefit recognized related to LTIPs was $6 million, $7 million and $7 million for the years ended December 31, 2010, 2011 and 2012, respectively. No compensation cost related to LTIPs was capitalized as a part of inventory or fixed assets in 2010, 2011 or 2012. The actual tax benefit realized for tax deductions related to LTIPs totaled $5 million, $8 million and $14 million for 2010, 2011 and 2012, respectively.



Compensation costs for the performance and stock awards granted under LTIPs are measured using fair value and expected achievement levels on the grant date. For performance awards with operational goals, the achievement levels are revised as goals are evaluated. The fair value of awards granted to employees is based on the closing stock price of CenterPoint Energy’s common stock on the grant date. The compensation expense is recorded on a straight-line basis over the vesting period. Forfeitures are estimated on the date of grant based on historical averages.

The following tables summarize CenterPoint Energy’s LTIP activity for 2012:

## Stock Options

<table><tr><td rowspan="3"></td><td colspan="5">Outstanding Options</td></tr><tr><td colspan="5">Year Ended December 31, 2012</td></tr><tr><td>Shares (Thousands)</td><td>Weighted-Average Exercise Price</td><td>Remaining Average Contractual Life (Years)</td><td>Aggregate Intrinsic Value (Millions)</td><td></td></tr><tr><td>Outstanding at December 31, 2011</td><td>965</td><td>$ 8.28</td><td></td><td></td><td></td></tr><tr><td>Exercised</td><td>(506)</td><td>6.86</td><td></td><td></td><td></td></tr><tr><td>Outstanding at December 31, 2012</td><td>459</td><td>9.84</td><td>0.9</td><td>$ 4</td><td></td></tr><tr><td>Exercisable at December 31, 2012</td><td>459</td><td>9.84</td><td>0.9</td><td>4</td><td></td></tr></table>

Cash received from stock options exercised was $9 million, $5 million and $3 million for 2010, 2011 and 2012, respectively.

CenterPoint Energy has not issued stock options since 2004.

## Performance Awards

<table><tr><td rowspan="3"></td><td colspan="5">Outstanding and Non-Vested Shares</td></tr><tr><td colspan="5">Year Ended December 31, 2012</td></tr><tr><td>Shares (Thousands)</td><td>Weighted-Average Grant Date Fair Value</td><td>Remaining Average Contractual Life (Years)</td><td>Aggregate Intrinsic Value (Millions)</td><td></td></tr><tr><td>Outstanding at December 31, 2011</td><td>3,298</td><td>$ 13.99</td><td></td><td></td><td></td></tr><tr><td>Granted</td><td>950</td><td>18.79</td><td></td><td></td><td></td></tr><tr><td>Forfeited or cancelled</td><td>(164)</td><td>14.78</td><td></td><td></td><td></td></tr><tr><td>Vested and released to participants</td><td>(1,092)</td><td>12.42</td><td></td><td></td><td></td></tr><tr><td>Outstanding at December 31, 2012</td><td>2,992</td><td>16.05</td><td>1.0</td><td>$ 42</td><td></td></tr></table>

The outstanding and non-vested shares displayed in the table above assumes that shares are issued at the maximum performance level. The aggregate intrinsic value reflects the impact of current expectations of achievement and stock price.



<table><tr><td rowspan="3"></td><td colspan="5">Outstanding and Non-Vested Shares</td></tr><tr><td colspan="5">Year Ended December 31, 2012</td></tr><tr><td>Shares (Thousands)</td><td>Weighted-Average Grant Date Fair Value</td><td>Remaining Average Contractual Life (Years)</td><td>Aggregate Intrinsic Value (Millions)</td><td></td></tr><tr><td>Outstanding at December 31, 2011</td><td>1,065</td><td>$ 14.14</td><td></td><td></td><td></td></tr><tr><td>Granted</td><td>392</td><td>18.96</td><td></td><td></td><td></td></tr><tr><td>Forfeited or cancelled</td><td>(30)</td><td>16.32</td><td></td><td></td><td></td></tr><tr><td>Vested and released to participants</td><td>(432)</td><td>13.09</td><td></td><td></td><td></td></tr><tr><td>Outstanding at December 31, 2012</td><td>995</td><td>16.43</td><td>1.0</td><td>$ 19</td><td></td></tr></table>

The weighted-average grant-date fair values of awards granted were as follows for 2010, 2011 and 2012:

<table><tr><td rowspan="2"></td><td colspan="3">Year Ended December 31,</td></tr><tr><td>2010</td><td>2011</td><td>2012</td></tr><tr><td>Performance awards</td><td>$ 14.21</td><td>$ 15.49</td><td>$ 18.79</td></tr><tr><td>Stock awards</td><td>14.26</td><td>15.81</td><td>18.96</td></tr></table>

## Valuation Data

The total intrinsic value of awards received by participants was as follows for 2010, 2011 and 2012:

<table><tr><td rowspan="3"></td><td colspan="4">Year Ended December 31,</td></tr><tr><td>2010</td><td colspan="2">2011</td><td>2012</td></tr><tr><td colspan="4">(in millions)</td></tr><tr><td>Stock options exercised</td><td>$ 4</td><td>$ 7</td><td>$ 6</td><td></td></tr><tr><td>Performance awards</td><td>5</td><td>7</td><td>24</td><td></td></tr><tr><td>Stock awards</td><td>4</td><td>7</td><td>9</td><td></td></tr></table>

The total grant date fair value of performance and stock awards which vested during the years ended December 31, 2010, 2011 and 2012 was $10 million, $12 million and $19 million, respectively. As of December 31, 2012, there was $19 million of total unrecognized compensation cost related to non-vested performance and stock awards which is expected to be recognized over a weighted-average period of 1.7 years.

## (b) Pension and Postretirement Benefits

CenterPoint Energy maintains a non-contributory qualified defined benefit pension plan covering substantially all employees, with benefits determined using a cash balance formula. Under the cash balance formula, participants accumulate a retirement benefit based upon 5% of eligible earnings and accrued interest. Participants are 100% vested in their benefit after completing three years of service. In addition to the non-contributory qualified defined benefit pension plan, CenterPoint Energy maintains unfunded non-qualified benefit restoration plans which allow participants to receive the benefits to which they would have been entitled under CenterPoint Energy’s non-contributory pension plan except for federally mandated limits on qualified plan benefits or on the level of compensation on which qualified plan benefits may be calculated.

CenterPoint Energy provides certain healthcare and life insurance benefits for retired employees on both a contributory and non-contributory basis. Employees become eligible for these benefits if they have met certain age and service requirements at retirement, as defined in the plans. Under plan amendments, effective in early 1999, healthcare benefits for future retirees were changed to limit employer contributions for medical coverage.

Such benefit costs are accrued over the active service period of employees. The net unrecognized transition obligation is being amortized over approximately 20 years.



CenterPoint Energy’s net periodic cost includes the following components relating to pension, including the benefit restoration plan, and postretirement benefits:

Year Ended December 31,

<table><tr><td rowspan="3"></td><td colspan="3">2010</td><td colspan="3">2011</td><td colspan="3">2012</td></tr><tr><td colspan="2">2010</td><td colspan="2">2011</td><td colspan="2">2012</td><td colspan="2">2012</td><td></td></tr><tr><td>Pension Benefits</td><td>Post-retirement Benefits</td><td>Pension Benefits</td><td>Post-retirement Benefits</td><td>Pension Benefits</td><td>Post-retirements</td><td>Pension Benefits</td><td>Post-retirements</td><td></td></tr><tr><td></td><td colspan="9">(in millions)</td></tr><tr><td>Service cost</td><td>$ 31</td><td>$ 1</td><td>$ 33</td><td>$ 1</td><td>$ 35</td><td>$ 1</td><td></td><td></td><td></td></tr><tr><td>Interest cost</td><td>102</td><td>25</td><td>100</td><td>24</td><td>100</td><td>23</td><td></td><td></td><td></td></tr><tr><td>Expected return on plan assets</td><td>(109)</td><td>(10)</td><td>(115)</td><td>(10)</td><td>(121)</td><td>(7)</td><td></td><td></td><td></td></tr><tr><td>Amortization of prior service cost</td><td>3</td><td>3</td><td>3</td><td>3</td><td>8</td><td>3</td><td></td><td></td><td></td></tr><tr><td>Amortization of net loss</td><td>59</td><td>—</td><td>57</td><td>1</td><td>60</td><td>4</td><td></td><td></td><td></td></tr><tr><td>Amortization of transition obligation</td><td>—</td><td>7</td><td>—</td><td>7</td><td>—</td><td>7</td><td></td><td></td><td></td></tr><tr><td>Benefit enhancement</td><td>—</td><td>—</td><td>—</td><td>1</td><td>—</td><td>1</td><td></td><td></td><td></td></tr><tr><td>Net periodic cost</td><td>$ 86</td><td>$ 26</td><td>$ 78</td><td>$ 27</td><td>$ 82</td><td>$ 32</td><td></td><td></td><td></td></tr></table>

CenterPoint Energy used the following assumptions to determine net periodic cost relating to pension and postretirement benefits:

Year Ended December 31,

<table><tr><td rowspan="3"></td><td colspan="3">2010</td><td colspan="3">2011</td><td colspan="3">2012</td></tr><tr><td colspan="2">2010</td><td colspan="2">2011</td><td colspan="2">2012</td><td colspan="2">2012</td><td></td></tr><tr><td>Pension Benefits</td><td>Post-retirement Benefits</td><td>Pension Benefits</td><td>Post-retirement Benefits</td><td>Pension Benefits</td><td>Post-retirements</td><td>Pension Benefits</td><td>Post-retirements</td><td></td></tr><tr><td>Discount rate</td><td>5.70%</td><td>5.70%</td><td>5.25%</td><td>5.20%</td><td>4.90%</td><td>4.80%</td><td></td><td></td><td></td></tr><tr><td>Expected return on plan assets</td><td>8.00</td><td>7.05</td><td>8.00</td><td>7.05</td><td>8.00</td><td>5.50</td><td></td><td></td><td></td></tr><tr><td>Rate of increase in compensation levels</td><td>4.60</td><td>—</td><td>4.60</td><td>—</td><td>4.20</td><td>—</td><td></td><td></td><td></td></tr></table>

In determining net periodic benefits cost, CenterPoint Energy uses fair value, as of the beginning of the year, as its basis for determining expected return on plan assets.



The following table summarizes changes in the benefit obligation, plan assets, the amounts recognized in consolidated balance sheets and the key assumptions of CenterPoint Energy’s pension, including benefit restoration, and postretirement plans. The measurement dates for plan assets and obligations were December 31, 2011 and 2012.

<table><tr><td rowspan="4"></td><td colspan="4">December 31,</td></tr><tr><td colspan="2">2011</td><td colspan="2">2012</td></tr><tr><td>Pension Benefits</td><td>Post-retirement Benefits</td><td>Pension Benefits</td><td>Post-retirement Benefits</td></tr><tr><td colspan="4">(in millions, except for actuarial assumptions)</td></tr><tr><td>Change in Benefit Obligation</td><td></td><td></td><td></td><td></td></tr><tr><td>Benefit obligation, beginning of year</td><td>$ 1,969</td><td>$ 460</td><td>$ 2,085</td><td>$ 500</td></tr><tr><td>Service cost</td><td>33</td><td>1</td><td>35</td><td>1</td></tr><tr><td>Interest cost</td><td>100</td><td>24</td><td>100</td><td>23</td></tr><tr><td>Participant contributions</td><td>—</td><td>7</td><td>—</td><td>7</td></tr><tr><td>Benefits paid</td><td>(113)</td><td>(40)</td><td>(123)</td><td>(35)</td></tr><tr><td>Actuarial loss</td><td>93</td><td>41</td><td>219</td><td>38</td></tr><tr><td>Early retiree reinsurance program reimbursement</td><td>—</td><td>3</td><td>—</td><td>—</td></tr><tr><td>Medicare reimbursement</td><td>3</td><td>4</td><td>—</td><td>4</td></tr><tr><td>Benefit obligation, end of year</td><td>2,085</td><td>500</td><td>2,316</td><td>538</td></tr><tr><td>Change in Plan Assets</td><td></td><td></td><td></td><td></td></tr><tr><td>Fair value of plan assets, beginning of year</td><td>1,501</td><td>144</td><td>1,506</td><td>138</td></tr><tr><td>Employer contributions</td><td>75</td><td>21</td><td>82</td><td>20</td></tr><tr><td>Participant contributions</td><td>—</td><td>7</td><td>—</td><td>7</td></tr><tr><td>Benefits paid</td><td>(113)</td><td>(40)</td><td>(123)</td><td>(35)</td></tr><tr><td>Actual investment return</td><td>43</td><td>6</td><td>233</td><td>9</td></tr><tr><td>Fair value of plan assets, end of year</td><td>1,506</td><td>138</td><td>1,698</td><td>139</td></tr><tr><td>Funded status, end of year</td><td>$ (579)</td><td>$ (362)</td><td>$ (618)</td><td>$ (399)</td></tr><tr><td>Amounts Recognized in Balance Sheets</td><td></td><td></td><td></td><td></td></tr><tr><td>Current liabilities-other</td><td>$ (9)</td><td>$ (9)</td><td>$ (9)</td><td>$ (9)</td></tr><tr><td>Other liabilities-benefit obligations</td><td>(570)</td><td>(353)</td><td>(609)</td><td>(390)</td></tr><tr><td>Net liability, end of year</td><td>$ (579)</td><td>$ (362)</td><td>$ (618)</td><td>$ (399)</td></tr><tr><td>Actuarial Assumptions</td><td></td><td></td><td></td><td></td></tr><tr><td>Discount rate</td><td>4.90%</td><td>4.80%</td><td>4.00%</td><td>3.90%</td></tr><tr><td>Expected return on plan assets</td><td>8.00</td><td>5.50</td><td>8.00</td><td>5.50</td></tr><tr><td>Rate of increase in compensation levels</td><td>4.20</td><td>—</td><td>4.00</td><td>—</td></tr><tr><td>Healthcare cost trend rate assumed for the next year</td><td>—</td><td>8.00</td><td>—</td><td>9.00</td></tr><tr><td>Prescription drug cost trend rate assumed for the next year</td><td>—</td><td>8.00</td><td>—</td><td>0.00</td></tr><tr><td>Rate to which the cost trend rate is assumed to decline (the ultimate trend rate)</td><td>—</td><td>5.50</td><td>—</td><td>5.50</td></tr><tr><td>Year that the healthcare rate reaches the ultimate trend rate</td><td>—</td><td>2017</td><td>—</td><td>2017</td></tr><tr><td>Year that the prescription drug rate reaches the ultimate trend rate</td><td>—</td><td>2017</td><td>—</td><td>2016</td></tr></table>

The accumulated benefit obligation for all defined benefit pension plans was $2,064 million and $2,283 million as of December 31, 2011 and 2012, respectively.

The expected rate of return assumption was developed by a weighted-average return analysis of the targeted asset allocation of CenterPoint Energy’s plans and the expected real return for each asset class, based on the long-term capital market assumptions, adjusted for investment fees and diversification effects, in addition to expected inflation.

The discount rate assumption was determined by matching the accrued cash flows of CenterPoint Energy’s plans against a hypothetical yield curve of high-quality corporate bonds represented by a series of annualized individual discount rates from one-half to 99 years.



For measurement purposes, healthcare and prescription costs are assumed to increase to 9.00% during 2013, after which this rate decreases until reaching the ultimate trend rate of 5.50% in 2017.

Amounts recognized in accumulated other comprehensive loss consist of the following:

<table><tr><td rowspan="4"></td><td colspan="6">December 31,</td></tr><tr><td colspan="3">2011</td><td colspan="3">2012</td></tr><tr><td>Pension Benefits</td><td colspan="2">Postretirement Benefits</td><td>Pension Benefits</td><td colspan="2">Postretirement Benefits</td></tr><tr><td colspan="6">(in millions)</td></tr><tr><td>Unrecognized actuarial loss</td><td>166</td><td>25</td><td>173</td><td>21</td><td></td><td></td></tr><tr><td>Unrecognized prior service cost</td><td>15</td><td>5</td><td>14</td><td>2</td><td></td><td></td></tr><tr><td>Unrecognized transition obligation</td><td>—</td><td>1</td><td>—</td><td>1</td><td></td><td></td></tr><tr><td>Net amount recognized in accumulated other comprehensive loss</td><td>181</td><td>31</td><td>187</td><td>24</td><td></td><td></td></tr></table>

The changes in plan assets and benefit obligations recognized in other comprehensive income during 2012 are as follows (in millions):

<table><tr><td></td><td>Pension Benefits</td><td>Postretirement Benefits</td></tr><tr><td>Net loss</td><td>$ (6)</td><td>$ (5)</td></tr><tr><td>Amortization of net loss</td><td>13</td><td>1</td></tr><tr><td>Prior service credit</td><td>(2)</td><td>(5)</td></tr><tr><td>Amortization of prior service credit</td><td>1</td><td>2</td></tr><tr><td>Total recognized in comprehensive income</td><td>$ 6</td><td>$ (7)</td></tr></table>

The total expense recognized in net periodic costs and other comprehensive income was $88 million and $25 million for pension and postretirement benefits, respectively, for the year ended December 31, 2012.

The amounts in accumulated other comprehensive loss expected to be recognized as components of net periodic benefit cost during 2013 are as follows (in millions):

<table><tr><td></td><td>Pension Benefits</td><td>Postretirement Benefits</td></tr><tr><td>Unrecognized actuarial loss</td><td>$ 13</td><td>$ 1</td></tr><tr><td>Unrecognized prior service cost</td><td>2</td><td>1</td></tr><tr><td>Amounts in accumulated comprehensive loss to be recognized in net periodic cost in 2013</td><td>$ 15</td><td>$ 2</td></tr></table>

The following table displays pension benefits related to CenterPoint Energy’s pension plans that have accumulated benefit obligations in excess of plan assets:

<table><tr><td rowspan="3"></td><td colspan="5">December 31,</td></tr><tr><td colspan="3">2011</td><td colspan="2">2012</td></tr><tr><td>Pension Qualified</td><td>Pension Non-qualified</td><td>Pension Qualified</td><td>Pension Non-qualified</td><td></td></tr><tr><td></td><td></td><td></td><td>(in millions)</td><td></td><td></td></tr><tr><td>Accumulated benefit obligation</td><td>$ 1,966</td><td>$ 98</td><td>$ 2,184</td><td>$ 99</td><td></td></tr><tr><td>Projected benefit obligation</td><td>1,987</td><td>98</td><td>2,217</td><td>99</td><td></td></tr><tr><td>Fair value of plan assets</td><td>1,506</td><td>—</td><td>1,698</td><td>—</td><td></td></tr></table>



Assumed healthcare cost trend rates have a significant effect on the reported amounts for CenterPoint Energy’s postretirement benefit plans. A 1% change in the assumed healthcare cost trend rate would have the following effects:

<table><tr><td rowspan="2"></td><td colspan="2">1% Increase</td><td colspan="2">1% Decrease</td></tr><tr><td colspan="4">(in millions)</td></tr><tr><td>Effect on the postretirement benefit obligation</td><td>$ 17</td><td>$ 15</td><td></td><td></td></tr><tr><td>Effect on total of service and interest cost</td><td>1</td><td>1</td><td></td><td></td></tr></table>

In managing the investments associated with the benefit plans, CenterPoint Energy’s objective is to preserve and enhance the value of plan assets while maintaining an acceptable level of volatility. These objectives are expected to be achieved through an investment strategy that manages liquidity requirements while maintaining a long-term horizon in making investment decisions and efficient and effective management of plan assets.

As part of the investment strategy discussed above, CenterPoint Energy has adopted and maintains the following weighted average allocation targets for its benefit plans:

<table><tr><td></td><td>Pension Benefits</td><td>Postretirement Benefits</td></tr><tr><td>U.S. equity</td><td>22 - 38%</td><td>14 - 24%</td></tr><tr><td>International developed market equity</td><td>13 - 23%</td><td>3 - 13%</td></tr><tr><td>Emerging market equity</td><td>7 - 17%</td><td>—</td></tr><tr><td>Fixed income</td><td>34 - 46%</td><td>68 - 78%</td></tr><tr><td>Cash</td><td>0 - 2%</td><td>0 - 2%</td></tr></table>

The following tables set forth by level, within the fair value hierarchy (see Note 8), CenterPoint Energy’s pension plan assets at fair value as of December 31, 2011 and 2012:

Fair Value Measurements at December 31, 2011

<table><tr><td rowspan="2"></td><td colspan="5">(in millions)</td></tr><tr><td>Total</td><td>Quoted Prices in Active Markets for Identical Assets (Level 1)</td><td>Significant Observable Inputs (Level 2)</td><td>Significant Unobservable Inputs (Level 3)</td><td></td></tr><tr><td>Cash</td><td>$ (11)</td><td>$ (11)</td><td>$ —</td><td>$ —</td><td></td></tr><tr><td>Common collective trust funds (1)</td><td>973</td><td>—</td><td>973</td><td>—</td><td></td></tr><tr><td>Corporate bonds:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Investment grade or above</td><td>129</td><td>—</td><td>129</td><td>—</td><td></td></tr><tr><td>Equity securities:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>International companies</td><td>128</td><td>128</td><td>—</td><td>—</td><td></td></tr><tr><td>U.S. companies</td><td>94</td><td>94</td><td>—</td><td>—</td><td></td></tr><tr><td>Cash received as collateral from securities lending</td><td>69</td><td>69</td><td>—</td><td>—</td><td></td></tr><tr><td>U.S. government backed agencies bonds</td><td>19</td><td>19</td><td>—</td><td>—</td><td></td></tr><tr><td>U.S. treasuries</td><td>34</td><td>34</td><td>—</td><td>—</td><td></td></tr><tr><td>Mortgage backed securities</td><td>9</td><td>—</td><td>9</td><td>—</td><td></td></tr><tr><td>Asset backed securities</td><td>8</td><td>—</td><td>8</td><td>—</td><td></td></tr><tr><td>Municipal bonds</td><td>39</td><td>—</td><td>39</td><td>—</td><td></td></tr><tr><td>Mutual funds (2)</td><td>54</td><td>54</td><td>—</td><td>—</td><td></td></tr><tr><td>International government bonds</td><td>22</td><td>—</td><td>22</td><td>—</td><td></td></tr><tr><td>Real estate</td><td>8</td><td>—</td><td>—</td><td>8</td><td></td></tr><tr><td>Obligation to return cash received as collateral from securities lending</td><td>(69)</td><td>(69)</td><td>—</td><td>—</td><td></td></tr><tr><td>Total</td><td>$ 1,506</td><td>$ 318</td><td>$ 1,180</td><td>$ 8</td><td></td></tr></table>

(1) 39% of the amount invested in common collective trust funds is in fixed income securities, 30% is in U.S. equities and 31% is in international equities.



(2) 75% of the amount invested in mutual funds is in fixed income securities and 25% is in U.S. equities.

Fair Value Measurements at December 31, 2012

<table><tr><td rowspan="2"></td><td colspan="5">(in millions)</td></tr><tr><td>Total</td><td>Quoted Prices in Active Markets for Identical Assets (Level 1)</td><td>Significant Observable Inputs (Level 2)</td><td>Significant Unobservable Inputs (Level 3)</td><td></td></tr><tr><td>Cash</td><td>$ 6</td><td>$ 6</td><td>$ —</td><td>$ —</td><td></td></tr><tr><td>Common collective trust funds (1)</td><td>1,134</td><td>—</td><td>1,134</td><td>—</td><td></td></tr><tr><td>Corporate bonds:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Investment grade or above</td><td>108</td><td>—</td><td>108</td><td>—</td><td></td></tr><tr><td>Equity securities:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>International companies</td><td>100</td><td>100</td><td>—</td><td>—</td><td></td></tr><tr><td>U.S. companies</td><td>101</td><td>101</td><td>—</td><td>—</td><td></td></tr><tr><td>Cash received as collateral from securities lending</td><td>52</td><td>52</td><td>—</td><td>—</td><td></td></tr><tr><td>U.S. government backed agencies bonds</td><td>1</td><td>1</td><td>—</td><td>—</td><td></td></tr><tr><td>U.S. treasuries</td><td>13</td><td>13</td><td>—</td><td>—</td><td></td></tr><tr><td>Mortgage backed securities</td><td>9</td><td>—</td><td>9</td><td>—</td><td></td></tr><tr><td>Asset backed securities</td><td>7</td><td>—</td><td>7</td><td>—</td><td></td></tr><tr><td>Municipal bonds</td><td>48</td><td>—</td><td>48</td><td>—</td><td></td></tr><tr><td>Mutual funds (2)</td><td>160</td><td>160</td><td>—</td><td>—</td><td></td></tr><tr><td>International government bonds</td><td>8</td><td>—</td><td>8</td><td>—</td><td></td></tr><tr><td>Real estate</td><td>3</td><td>—</td><td>—</td><td>3</td><td></td></tr><tr><td>Obligation to return cash received as collateral from securities lending</td><td>(52)</td><td>(52)</td><td>—</td><td>—</td><td></td></tr><tr><td>Total</td><td>$ 1,698</td><td>$ 381</td><td>$ 1,314</td><td>$ 3</td><td></td></tr></table>

(1) 42% of the amount invested in common collective trust funds is in fixed income securities, 27% is in U.S. equities, 26% is in international equities and 5% is in emerging market equities.

(2) 58% of the amount invested in mutual funds is in international equities, 33% is in emerging market equities and 9% is in U.S. equities.

The pension plan utilized both exchange traded and over-the-counter financial instruments such as futures, interest rate options and swaps that were marked to market daily with the gains/losses settled in the cash accounts. The pension plan did not include any holdings of CenterPoint Energy common stock as of December 31, 2011 or 2012.

The changes in the fair value of the pension plan’s level 3 investments for the years ended December 31, 2011 and 2012 were not material.



The following tables present by level, within the fair value hierarchy, CenterPoint Energy’s postretirement plan assets at fair value as of December 31, 2011 and 2012, by asset category:

Fair Value Measurements at December 31, 2011

<table><tr><td rowspan="2"></td><td colspan="5">(in millions)</td></tr><tr><td>Total</td><td>Quoted Prices in Active Markets for Identical Assets (Level 1)</td><td>Significant Observable Inputs (Level 2)</td><td>Significant Unobservable Inputs (Level 3)</td><td></td></tr><tr><td>Mutual funds (1)</td><td>$ 138</td><td>$ 138</td><td>$ —</td><td>$ —</td><td></td></tr><tr><td>Total</td><td>$ 138</td><td>$ 138</td><td>$ —</td><td>$ —</td><td></td><td></td></tr></table>

(1) 73% of the amount invested in mutual funds is in fixed income securities, 19% is in U.S. equities and 8% is in international equities.

Fair Value Measurements at December 31, 2012

<table><tr><td rowspan="2"></td><td colspan="5">(in millions)</td></tr><tr><td>Total</td><td>Quoted Prices in Active Markets for Identical Assets (Level 1)</td><td>Significant Observable Inputs (Level 2)</td><td>Significant Unobservable Inputs (Level 3)</td><td></td></tr><tr><td>Mutual funds (1)</td><td>$ 139</td><td>$ 139</td><td>$ —</td><td>$ —</td><td></td></tr><tr><td>Total</td><td>$ 139</td><td>$ 139</td><td>$ —</td><td>$ —</td><td></td><td></td></tr></table>

(1) 73% of the amount invested in mutual funds is in fixed income securities, 19% is in U.S. equities and 8% is in international equities.

CenterPoint Energy contributed $73 million, $9 million and $16 million to its qualified pension, non-qualified pension and postretirement benefits plans, respectively, in 2012. CenterPoint Energy expects to contribute approximately $83 million, $9 million and $18 million to its qualified pension, non-qualified pension and postretirement benefits plans, respectively, in 2013.

The following benefit payments are expected to be paid by the pension and postretirement benefit plans (in millions):

<table><tr><td rowspan="2"></td><td rowspan="2">Pension Benefits</td><td colspan="3">Postretirement Benefit Plan</td></tr><tr><td>Benefit Payments</td><td>Medicare Subsidy Receipts</td><td></td></tr><tr><td>2013</td><td>$ 130</td><td>$ 34</td><td>$ (4)</td><td></td></tr><tr><td>2014</td><td>141</td><td>36</td><td>(4)</td><td></td></tr><tr><td>2015</td><td>149</td><td>37</td><td>(5)</td><td></td></tr><tr><td>2016</td><td>151</td><td>39</td><td>(5)</td><td></td></tr><tr><td>2017</td><td>153</td><td>40</td><td>(6)</td><td></td></tr><tr><td>2018-2022</td><td>816</td><td>222</td><td>(39)</td><td></td></tr></table>

## (c) Savings Plan

CenterPoint Energy has a tax-qualified employee savings plan that includes a cash or deferred arrangement under Section 401(k) of the Internal Revenue Code of 1986, as amended (the Code), and an employee stock ownership plan (ESOP) under Section 4975 (e)(7) of the Code. Under the plan, participating employees may contribute a portion of their compensation, on a pre-tax or after-tax basis, generally up to a maximum of 50% of eligible compensation. The Company matches 100% of the first 6% of each employee’s compensation contributed. The matching contributions are fully vested at all times.

Participating employees may elect to invest all or a portion of their contributions to the plan in CenterPoint Energy common stock, to have dividends reinvested in additional shares or to receive dividend payments in cash on any investment in CenterPoint Energy common stock, and to transfer all or part of their investment in CenterPoint Energy common stock to other investment options offered by the plan.



The savings plan has significant holdings of CenterPoint Energy common stock. As of December 31, 2012, 19,494,130 shares of CenterPoint Energy’s common stock were held by the savings plan, which represented approximately 22% of its investments. Given the concentration of the investments in CenterPoint Energy’s common stock, the savings plan and its participants have market risk related to this investment.

CenterPoint Energy’s savings plan benefit expenses were $34 million, $35 million and $36 million in 2010, 2011 and 2012, respectively.

## (d) Postemployment Benefits

CenterPoint Energy provides postemployment benefits for former or inactive employees, their beneficiaries and covered dependents, after employment but before retirement (primarily healthcare and life insurance benefits for participants in the long-term disability plan). The Company recorded postemployment benefits of $1 million income, $7 million expense and $8 million expense in 2010, 2011 and 2012, respectively.

Included in “Benefit Obligations” in the accompanying Consolidated Balance Sheets at December 31, 2011 and 2012 was $30 million and $32 million, respectively, relating to postemployment obligations.

## (e) Other Non-Qualified Plans

CenterPoint Energy has non-qualified deferred compensation plans that provide benefits payable to directors, officers and certain key employees or their designated beneficiaries at specified future dates, upon termination, retirement or death. Benefit payments are made from the general assets of CenterPoint Energy. During 2010, 2011 and 2012, CenterPoint Energy recorded benefit expense relating to these plans of $5 million, $5 million and $5 million, respectively. Included in “Benefit Obligations” in the accompanying Consolidated Balance Sheets at December 31, 2011 and 2012 was $76 million and $71 million, respectively, relating to deferred compensation plans.

Included in Benefit Obligations in CenterPoint Energy’s Consolidated Balance Sheets at December 31, 2011 and 2012 was $25 million and $29 million, respectively, relating to split-dollar life insurance arrangements.

## (f) Change in Control Agreements and Other Employee Matters

CenterPoint Energy has agreements with certain of its officers that generally provide, to the extent applicable, in the case of a change in control of CenterPoint Energy and termination of employment, for severance benefits of up to three times annual base salary plus bonus, and other benefits. These agreements are for a one-year term with automatic renewal unless action is taken by CenterPoint Energy’s board of directors prior to the renewal.

As of December 31, 2012, approximately 30% of CenterPoint Energy’s employees were subject to collective bargaining agreements. The collective bargaining agreement with the International Brotherhood of Electrical Workers Union Local 66, which covers approximately 14% of CenterPoint Energy’s employees, is scheduled to expire in May 2013. CenterPoint believes it has a good relationship with this bargaining unit and expects to negotiate a new agreement in 2013.

## (7) Derivative Instruments

CenterPoint Energy is exposed to various market risks. These risks arise from transactions entered into in the normal course of business. CenterPoint Energy utilizes derivative instruments such as physical forward contracts, swaps and options to mitigate the impact of changes in commodity prices, weather and interest rates on its operating results and cash flows.

## (a) Non-Trading Activities

Derivative Instruments. CenterPoint Energy enters into certain derivative instruments to manage physical commodity price risks and does not engage in proprietary or speculative commodity trading. These financial instruments do not qualify or are not designated as cash flow or fair value hedges.

During the year ended December 31, 2010, CenterPoint Energy recorded increased natural gas revenues from unrealized net gains of $18 million and increased natural gas expense from unrealized net losses of $14 million, a net unrealized gain of $4 million. During the year ended December 31, 2011, CenterPoint Energy recorded increased natural gas revenues from unrealized net gains of $38 million and increased natural gas expense from unrealized net losses of $30 million, a net unrealized gain of $8 million. During the year ended December 31, 2012, CenterPoint Energy recorded decreased natural gas revenues from



unrealized net losses of $68 million and decreased natural gas expense from unrealized net gains of $52 million, a net unrealized loss of $16 million.

Weather Hedges. CenterPoint Energy has weather normalization or other rate mechanisms that mitigate the impact of weather on its gas operations in Arkansas, Louisiana, Mississippi, Oklahoma and a portion of Texas. The remaining Gas Operations jurisdictions do not have such mechanisms. As a result, fluctuations from normal weather may have a significant positive or negative effect on Gas Operations’ results in the remaining jurisdictions and in CenterPoint Houston’s service territory. CenterPoint Energy enters into heating-degree day swaps for these Gas Operations jurisdictions to mitigate the effect of fluctuations from normal weather on its results of operations and cash flows for the winter heating season. The swaps are based on ten-year normal weather. During the years ended December 31, 2010, 2011 and 2012, CenterPoint Energy recognized losses of $6 million, losses of less than $1 million and gains of $8 million, respectively, related to these swaps. The 2011/2012 winter weather hedge had a maximum payment limit of $11 million. Due to the warmer than normal weather, the maximum was reached by February 2012. Weather hedge gains and losses are included in revenues in the Statements of Consolidated Income.

## (b) Derivative Fair Values and Income Statement Impacts

The following tables present information about CenterPoint Energy’s derivative instruments and hedging activities. The first two tables provide a balance sheet overview of CenterPoint Energy’s Derivative Assets and Liabilities as of December 31, 2011 and 2012, while the last table provides a breakdown of the related income statement impacts for the years ending December 31, 2011 and 2012.

Fair Value of Derivative Instruments

<table><tr><td rowspan="2">Total derivatives not designated as hedging instruments</td><td colspan="4">December 31, 2011</td></tr><tr><td>Balance Sheet Location</td><td>Derivative Assets Fair Value (2) (3)</td><td>Derivative Liabilities Fair Value (2) (3)</td><td></td></tr><tr><td></td><td></td><td></td><td>(in millions)</td><td></td></tr><tr><td>Natural gas derivatives (1)</td><td>Current Assets: Non-trading derivative assets</td><td>$ 88</td><td>$ 1</td><td></td></tr><tr><td>Natural gas derivatives (1)</td><td>Other Assets: Non-trading derivative assets</td><td>20</td><td>—</td><td></td></tr><tr><td>Natural gas derivatives (1)</td><td>Current Liabilities: Non-trading derivative liabilities</td><td>15</td><td>110</td><td></td></tr><tr><td>Natural gas derivatives (1)</td><td>Other Liabilities: Non-trading derivative liabilities</td><td>—</td><td>13</td><td></td></tr><tr><td>Indexed debt securities derivative</td><td>Current Liabilities</td><td>—</td><td>197</td><td></td></tr><tr><td>Total</td><td></td><td>$ 123</td><td>$ 321</td><td></td></tr></table>

(1) Natural gas contracts are subject to master netting arrangements and are presented on a net basis in the Consolidated Balance Sheets. This netting causes derivative assets (liabilities) to be ultimately presented net in a liability (asset) account within the Consolidated Balance Sheets.

(2) The fair value shown for natural gas contracts is comprised of derivative gross volumes totaling 633 billion cubic feet (Bcf) or a net 84 Bcf long position. Of the net long position, basis swaps constitute 74 Bcf and volumes associated with price stabilization activities of the Natural Gas Distribution business segment constitute 6 Bcf.

(3) The net of total non-trading derivative assets and liabilities is a $55 million asset as shown on CenterPoint Energy’s Consolidated Balance Sheets, and is comprised of the natural gas contracts derivative assets and liabilities separately shown above offset by collateral netting of $56 million.



Fair Value of Derivative Instruments

<table><tr><td rowspan="2">Total derivatives not designated as hedging instruments</td><td colspan="3">December 31, 2012</td></tr><tr><td>Balance Sheet Location</td><td>Derivative Assets Fair Value (2) (3)</td><td>Derivative Liabilities Fair Value (2) (3)</td></tr><tr><td></td><td></td><td colspan="2">(in millions)</td></tr><tr><td>Natural gas derivatives (1)</td><td>Current Assets: Non-trading derivative assets</td><td>$ 37</td><td>$ 1</td></tr><tr><td>Natural gas derivatives (1)</td><td>Other Assets: Non-trading derivative assets</td><td>6</td><td>—</td></tr><tr><td>Natural gas derivatives (1)</td><td>Current Liabilities: Non-trading derivative liabilities</td><td>5</td><td>27</td></tr><tr><td>Natural gas derivatives (1)</td><td>Other Liabilities: Non-trading derivative liabilities</td><td>1</td><td>4</td></tr><tr><td>Indexed debt securities derivative</td><td>Current Liabilities</td><td>—</td><td>268</td></tr><tr><td>Total</td><td></td><td>$ 49</td><td>$ 300</td></tr></table>

(1) Natural gas contracts are subject to master netting arrangements and are presented on a net basis in the Consolidated Balance Sheets. This netting causes derivative assets (liabilities) to be ultimately presented net in a liability (asset) account within the Consolidated Balance Sheets.

(2) The fair value shown for natural gas contracts is comprised of derivative gross volumes totaling 489 Bcf or a net 101 Bcf long position. Of the net long position, basis swaps constitute 73 Bcf.

(3) The net of total non-trading derivative assets and liabilities is a $26 million asset as shown on CenterPoint Energy’s Consolidated Balance Sheets, and is comprised of the natural gas contracts derivative assets and liabilities separately shown above offset by collateral netting of $9 million.

For CenterPoint Energy’s price stabilization activities of the Natural Gas Distribution business segment, the settled costs of derivatives are ultimately recovered through purchased gas adjustments. Accordingly, the net unrealized gains and losses associated with these contracts are recorded as net regulatory assets. Realized and unrealized gains and losses on other derivatives are recognized in the Statements of Consolidated Income as revenue for retail sales derivative contracts and as natural gas expense for financial natural gas derivatives and non-retail related physical natural gas derivatives. Unrealized gains and losses on indexed debt securities are recorded as Other Income (Expense) in the Statements of Consolidated Income.

Income Statement Impact of Derivative Activity

<table><tr><td rowspan="2">Total derivatives not designated as hedging instruments</td><td rowspan="2">Income Statement Location</td><td colspan="2">Year Ended December 31,</td></tr><tr><td>2011</td><td>2012</td></tr><tr><td></td><td></td><td colspan="2">(in millions)</td></tr><tr><td>Natural gas derivatives</td><td>Gains (Losses) in Revenue</td><td>$ 102</td><td>$ 43</td></tr><tr><td>Natural gas derivatives (1)</td><td>Gains (Losses) in Expense: Natural Gas</td><td>(144)</td><td>(63)</td></tr><tr><td>Indexed debt securities derivative</td><td>Gains (Losses) in Other Income (Expense)</td><td>35</td><td>(71)</td></tr><tr><td>Total</td><td></td><td>$ (7)</td><td>$ (91)</td></tr></table>

(1) The Gains (Losses) in Expense: Natural Gas includes $(107) million and $(38) million of costs in 2011 and 2012, respectively, associated with price stabilization activities of the Natural Gas Distribution business segment that will be ultimately recovered through purchased gas adjustments.

## (c) Credit Risk Contingent Features

CenterPoint Energy enters into financial derivative contracts containing material adverse change provisions. These provisions could require CenterPoint Energy to post additional collateral if the Standard & Poor’s Ratings Services or Moody’s Investors Service, Inc. credit ratings of CenterPoint Energy, Inc. or its subsidiaries are downgraded. The total fair value of the derivative instruments that contain credit risk contingent features that are in a net liability position at December 31, 2011 and 2012 was $39 million and $5 million, respectively. The aggregate fair value of assets that are already posted as collateral was less than $1 million at both December 31, 2011 and 2012. If all derivative contracts (in a net liability position) containing credit risk contingent features were triggered at December 31, 2011 and 2012, $38 million and $5 million, respectively, of additional assets would be required to be posted as collateral.



## (d) Credit Quality of Counterparties

In addition to the risk associated with price movements, credit risk is also inherent in CenterPoint Energy’s non-trading derivative activities. Credit risk relates to the risk of loss resulting from non-performance of contractual obligations by a counterparty. The following table shows the composition of counterparties to the non-trading derivative assets of CenterPoint Energy as of December 31, 2011 and 2012 (in millions):

<table><tr><td rowspan="2"></td><td colspan="3">December 31, 2011</td><td colspan="3">December 31, 2012</td></tr><tr><td>Investment Grade(1)</td><td>Total</td><td>Investment Grade(1)</td><td>Total</td><td></td><td></td></tr><tr><td>Energy marketers</td><td>$ 1</td><td>$ 7</td><td>$ 1</td><td>$ 1</td><td></td><td></td></tr><tr><td>Financial institutions</td><td>—</td><td>—</td><td>—</td><td>—</td><td></td><td></td></tr><tr><td>Retail end users (2)</td><td>—</td><td>100</td><td>—</td><td>41</td><td></td><td></td></tr><tr><td>Total</td><td>$ 1</td><td>$ 107</td><td>$ 1</td><td>$ 42</td><td></td><td></td></tr></table>

(1) “Investment grade” is primarily determined using publicly available credit ratings and considering credit support (including parent company guarantees) and collateral (including cash and standby letters of credit). For unrated counterparties, CenterPoint Energy determines a synthetic credit rating by performing financial statement analysis and considering contractual rights and restrictions and collateral.

(2) Retail end users represent customers who have contracted to fix the price of a portion of their physical gas requirements for future periods.

## (8) Fair Value Measurements

Assets and liabilities that are recorded at fair value in the Consolidated Balance Sheets are categorized based upon the level of judgment associated with the inputs used to measure their value. Hierarchical levels, as defined below and directly related to the amount of subjectivity associated with the inputs to fair valuations of these assets and liabilities, are as follows:

Level 1: Inputs are unadjusted quoted prices in active markets for identical assets or liabilities at the measurement date. The types of assets carried at Level 1 fair value generally are exchange-traded derivatives and equity securities.

Level 2: Inputs, other than quoted prices included in Level 1, are observable for the asset or liability, either directly or indirectly. Level 2 inputs include quoted prices for similar instruments in active markets, and inputs other than quoted prices that are observable for the asset or liability. Fair value assets and liabilities that are generally included in this category are derivatives with fair values based on inputs from actively quoted markets. A market approach is utilized to value CenterPoint Energy’s Level 2 assets or liabilities.

Level 3: Inputs are unobservable for the asset or liability, and include situations where there is little, if any, market activity for the asset or liability. Unobservable inputs reflect CenterPoint Energy’s judgments about the assumptions market participants would use in pricing the asset or liability since limited market data exists. CenterPoint Energy develops these inputs based on the best information available, including CenterPoint Energy’s own data. A market approach is utilized to value CenterPoint Energy’s Level 3 assets or liabilities. Currently, CenterPoint Energy’s Level 3 assets and liabilities are comprised of physical forward contracts and options. Level 3 physical forward contracts are valued using a discounted cash flow model which includes illiquid forward price curve locations (ranging from $3.07-$4.79 per one million British thermal units (Btu)) as an unobservable input. Level 3 options are valued through Black-Scholes (including forward start) option models which include option volatilities (ranging from 0-58%) as an unobservable input. CenterPoint Energy’s Level 3 derivative assets and liabilities consist of both long and short positions (forwards and options) and their fair value is sensitive to forward prices and volatilities. If forward prices decrease, CenterPoint Energy’s long forwards lose value whereas its short forwards gain in value. If volatility decreases, CenterPoint Energy’s long options lose value whereas its short options gain in value. Instruments classified as Level 3 include the revaluation of the Competitive Natural Gas Sales and Services reporting unit (See Note 4).

CenterPoint Energy determines the appropriate level for each financial asset and liability on a quarterly basis and recognizes transfers between levels at the end of the reporting period. For the year ended December 31, 2012, there were no transfers between Level 1 and 2 with regard to Natural Gas derivatives. CenterPoint Energy also recognizes purchases of Level 3 financial assets and liabilities at their fair market value at the end of the reporting period.



The following tables present information about CenterPoint Energy’s assets and liabilities (including derivatives that are presented net) measured at fair value on a recurring basis as of December 31, 2011 and 2012, and indicate the fair value hierarchy of the valuation techniques utilized by CenterPoint Energy to determine such fair value.

<table><tr><td></td><td>Quoted Prices in Active Markets for Identical Assets (Level 1)</td><td>Significant Other Observable Inputs (Level 2)</td><td>Significant Unobservable Inputs (Level 3)</td><td>Netting Adjustments (1)</td><td>Balance at December 31, 2011</td></tr><tr><td></td><td></td><td></td><td>(in millions)</td><td></td><td></td></tr><tr><td>Assets</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Corporate equities</td><td>$ 387</td><td>$ —</td><td>$ —</td><td>$ —</td><td>$ 387</td></tr><tr><td>Investments, including money market funds</td><td>56</td><td>—</td><td>—</td><td>—</td><td>56</td></tr><tr><td>Natural gas derivatives</td><td>1</td><td>112</td><td>10</td><td>(16)</td><td>107</td></tr><tr><td>Total assets</td><td>$ 444</td><td>$ 112</td><td>$ 10</td><td>$ (16)</td><td>$ 550</td></tr><tr><td>Liabilities</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Indexed debt securities derivative</td><td>$ —</td><td>$ 197</td><td>$ —</td><td>$ —</td><td>$ 197</td></tr><tr><td>Natural gas derivatives</td><td>19</td><td>101</td><td>4</td><td>(72)</td><td>52</td></tr><tr><td>Total liabilities</td><td>$ 19</td><td>$ 298</td><td>$ 4</td><td>$ (72)</td><td>$ 249</td></tr></table>

(1) Amounts represent the impact of legally enforceable master netting agreements that allow CenterPoint Energy to settle positive and negative positions and also include cash collateral of $56 million posted with the same counterparties.

<table><tr><td></td><td>Quoted Prices in Active Markets for Identical Assets (Level 1)</td><td>Significant Other Observable Inputs (Level 2)</td><td>Significant Unobservable Inputs (Level 3)</td><td>Netting Adjustments (1)</td><td>Balance at December 31, 2012</td></tr><tr><td></td><td></td><td></td><td>(in millions)</td><td></td><td></td></tr><tr><td>Assets</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Corporate equities</td><td>$ 542</td><td>$ —</td><td>$ —</td><td>$ —</td><td>$ 542</td></tr><tr><td>Investments, including money market funds</td><td>76</td><td>—</td><td>—</td><td>—</td><td>76</td></tr><tr><td>Natural gas derivatives</td><td>1</td><td>40</td><td>7</td><td>(6)</td><td>42</td></tr><tr><td>Total assets</td><td>$ 619</td><td>$ 40</td><td>$ 7</td><td>$ (6)</td><td>$ 660</td></tr><tr><td>Liabilities</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Indexed debt securities derivative</td><td>$ —</td><td>$ 268</td><td>$ —</td><td>$ —</td><td>$ 268</td></tr><tr><td>Natural gas derivatives</td><td>5</td><td>21</td><td>5</td><td>(15)</td><td>16</td></tr><tr><td>Total liabilities</td><td>$ 5</td><td>$ 289</td><td>$ 5</td><td>$ (15)</td><td>$ 284</td></tr></table>

(1) Amounts represent the impact of legally enforceable master netting agreements that allow CenterPoint Energy to settle positive and negative positions and also include cash collateral of $9 million posted with the same counterparties.



The following tables present additional information about assets or liabilities, including derivatives that are measured at fair value on a recurring basis for which CenterPoint Energy has utilized Level 3 inputs to determine fair value:

<table><tr><td rowspan="4"></td><td colspan="4">Fair Value Measurements Using Significant Unobservable Inputs (Level 3)</td></tr><tr><td colspan="4">Derivative assets and liabilities, net</td></tr><tr><td colspan="4">Year Ended December 31,</td></tr><tr><td>2010</td><td>2011</td><td>2012</td><td></td></tr><tr><td></td><td colspan="4">(in millions)</td></tr><tr><td>Beginning balance</td><td>$</td><td>(6)</td><td>$</td><td>3</td></tr><tr><td>Total gains or (losses):</td><td></td><td></td><td></td><td></td></tr><tr><td>Included in earnings</td><td></td><td>4</td><td></td><td>6</td></tr><tr><td>Included in regulatory assets</td><td></td><td>(1)</td><td></td><td>—</td></tr><tr><td>Total settlements:</td><td></td><td></td><td></td><td></td></tr><tr><td>Included in earnings</td><td></td><td>(2)</td><td></td><td>(3)</td></tr><tr><td>Included in regulatory assets</td><td></td><td>8</td><td></td><td>—</td></tr><tr><td>Total purchases</td><td></td><td>—</td><td></td><td>2</td></tr><tr><td>Transfers out of Level 3 \( ^{(1)} \)</td><td></td><td>—</td><td></td><td>(2)</td></tr><tr><td>Ending balance</td><td>$</td><td>3</td><td>$</td><td>6</td></tr><tr><td>The amount of total gains for the period included in earnings attributable to the change in unrealized gains or losses relating to assets still held at the reporting date</td><td>$</td><td>4</td><td>$</td><td>5</td></tr></table>

(1) During 2010, 2011 and 2012, CenterPoint Energy did not have material Level 3 sales or significant transfers into Level 3.

## Estimated Fair Value of Financial Instruments

The fair values of cash and cash equivalents, investments in debt and equity securities classified as "trading" and short-term borrowings are estimated to be approximately equivalent to carrying amounts and have been excluded from the table below. The fair values of non-trading derivative assets and liabilities and CenterPoint Energy's 2.00% Zero-Premium Exchangeable Subordinated Notes due 2029 (ZENS) indexed debt securities derivative are stated at fair value and are excluded from the table below. The fair value of each debt instrument is determined by multiplying the principal amount of each debt instrument by the market price.

<table><tr><td rowspan="3"></td><td colspan="3">December 31, 2011</td><td colspan="3">December 31, 2012</td></tr><tr><td>Carrying Amount</td><td colspan="2">Fair Value</td><td>Carrying Amount</td><td colspan="2">Fair Value</td></tr><tr><td colspan="6">(in millions)</td></tr><tr><td>Financial liabilities:</td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Long-term debt</td><td>$</td><td>8,994</td><td>$</td><td>10,049</td><td>$</td><td>9,619</td></tr></table>

## (9) Indexed Debt Securities (ZENS) and Time Warner Securities

## (a) Investment in Time Warner Securities

In 1995, CenterPoint Energy sold a cable television subsidiary to Time Warner, Inc. (TW) and received TW securities as partial consideration. A subsidiary of CenterPoint Energy now holds 7.2 million shares of TW common stock (TW Common), 1.8 million shares of Time Warner Cable Inc. (TWC) common stock (TWC Common) and 0.7 million shares of AOL, Inc. (AOL) common stock (AOL Common) (together with the TW Common and TWC Common, the TW Securities) which are classified as trading securities and are expected to be held to facilitate CenterPoint Energy’s ability to meet its obligation under the ZENS. Unrealized gains and losses resulting from changes in the market value of the TW Securities are recorded in CenterPoint Energy’s Statements of Consolidated Income.



## (b) ZENS

In September 1999, CenterPoint Energy issued ZENS having an original principal amount of $1 billion of which $840 million remain outstanding at December 31, 2012. Each ZENS note was originally exchangeable at the holder’s option at any time for an amount of cash equal to 95% of the market value of the reference shares of TW Common attributable to such note. The number and identity of the reference shares attributable to each ZENS note are adjusted for certain corporate events. As of December 31, 2012, the reference shares for each ZENS note consisted of 0.5 share of TW Common, 0.125505 share of TWC Common and 0.045455 share of AOL Common. CenterPoint Energy pays interest on the ZENS at an annual rate of 2% plus the amount of any quarterly cash dividends paid in respect of the reference shares attributable to the ZENS. The principal amount of ZENS is subject to being increased or decreased to the extent that the annual yield from interest and cash dividends on the reference shares is less than or more than 2.309%. The adjusted principal amount is defined in the ZENS instrument as “contingent principal.” At December 31, 2012, ZENS having an original principal amount of $840 million and a contingent principal amount of $784 million were outstanding and were exchangeable, at the option of the holders, for cash equal to 95% of the market value of reference shares deemed to be attributable to the ZENS. At December 31, 2012, the market value of such shares was approximately $540 million, which would provide an exchange amount of $611 for each $1,000 original principal amount of ZENS. At maturity of the ZENS in 2029, CenterPoint Energy will be obligated to pay in cash the higher of the contingent principal amount of the ZENS or an amount based on the then-current market value of the reference shares, which will include any additional publicly-traded securities distributed with respect to the current reference shares prior to maturity.

The ZENS obligation is bifurcated into a debt component and a derivative component (the holder’s option to receive the appreciated value of the reference shares at maturity). The bifurcated debt component accretes through interest charges at 17.3% annually up to the contingent principal amount of the ZENS in 2029. Such accretion will be reduced by annual cash interest payments, as described above. The derivative component is recorded at fair value and changes in the fair value of the derivative component are recorded in CenterPoint Energy’s Statements of Consolidated Income. Changes in the fair value of the TW Securities held by CenterPoint Energy are expected to substantially offset changes in the fair value of the derivative component of the ZENS.

The following table sets forth summarized financial information regarding CenterPoint Energy’s investment in TW Securities and each component of CenterPoint Energy’s ZENS obligation (in millions).

<table><tr><td></td><td>TW Securities</td><td>Debt Component of ZENS</td><td>Derivative Component of ZENS</td></tr><tr><td>Balance at December 31, 2009</td><td>$ 300</td><td>$ 121</td><td>$ 201</td></tr><tr><td>Accretion of debt component of ZENS</td><td>—</td><td>22</td><td>—</td></tr><tr><td>2% interest paid</td><td>—</td><td>(17)</td><td>—</td></tr><tr><td>Loss on indexed debt securities</td><td>—</td><td>—</td><td>31</td></tr><tr><td>Gain on TW Common</td><td>67</td><td>—</td><td>—</td></tr><tr><td>Balance at December 31, 2010</td><td>367</td><td>126</td><td>232</td></tr><tr><td>Accretion of debt component of ZENS</td><td>—</td><td>22</td><td>—</td></tr><tr><td>2% interest paid</td><td>—</td><td>(17)</td><td>—</td></tr><tr><td>Gain on indexed debt securities</td><td>—</td><td>—</td><td>(35)</td></tr><tr><td>Gain on TW Securities</td><td>19</td><td>—</td><td>—</td></tr><tr><td>Balance at December 31, 2011</td><td>386</td><td>131</td><td>197</td></tr><tr><td>Accretion of debt component of ZENS</td><td>—</td><td>24</td><td>—</td></tr><tr><td>2% interest paid</td><td>—</td><td>(17)</td><td>—</td></tr><tr><td>Loss on indexed debt securities</td><td>—</td><td>—</td><td>71</td></tr><tr><td>Gain on TW Securities</td><td>154</td><td>—</td><td>—</td></tr><tr><td>Balance at December 31, 2012</td><td>$ 540</td><td>$ 138</td><td>$ 268</td></tr></table>



## (10) Equity

## Capital Stock

CenterPoint Energy has 1,020,000,000 authorized shares of capital stock, comprised of 1,000,000,000 shares of $0.01 par value common stock and 20,000,000 shares of $0.01 par value cumulative preferred stock.

## (11) Short-term Borrowings and Long-term Debt

<table><tr><td rowspan="3"></td><td colspan="3">December 31, 2011</td><td colspan="3">December 31, 2012</td></tr><tr><td>Long-Term</td><td colspan="2">Current(1)</td><td>Long-Term</td><td colspan="2">Current(1)</td></tr><tr><td colspan="6">(in millions)</td></tr><tr><td>Short-term borrowings:</td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Inventory financing</td><td>$ —</td><td>$ 62</td><td>$ —</td><td>$ —</td><td>$ 38</td><td></td></tr><tr><td>Total short-term borrowings</td><td>—</td><td>62</td><td>—</td><td>38</td><td></td><td></td></tr><tr><td>Long-term debt:</td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>CenterPoint Energy:</td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>ZENS(2)</td><td>—</td><td>131</td><td>—</td><td>138</td><td></td><td></td></tr><tr><td>Senior notes 5.95% to 6.85% due 2015 to 2018</td><td>750</td><td>—</td><td>750</td><td>—</td><td></td><td></td></tr><tr><td>Pollution control bonds 4.00% due 2015(3)</td><td>151</td><td>—</td><td>151</td><td>—</td><td></td><td></td></tr><tr><td>Pollution control bonds 4.90% to 5.95% due 2015 to 2030(4)</td><td>562</td><td>—</td><td>187</td><td>—</td><td></td><td></td></tr><tr><td>CenterPoint Houston:</td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>First mortgage bonds 9.15% due 2021</td><td>102</td><td>—</td><td>102</td><td>—</td><td></td><td></td></tr><tr><td>General mortgage bonds 2.25% to 6.95% due 2013 to 2042</td><td>1,762</td><td>—</td><td>1,312</td><td>450</td><td></td><td></td></tr><tr><td>Pollution control bonds 4.250% to 5.60% due 2017 to 2027(5)</td><td>183</td><td>46</td><td>183</td><td>—</td><td></td><td></td></tr><tr><td>System restoration bonds 1.833% to 4.243% due 2013 to 2022</td><td>556</td><td>45</td><td>510</td><td>46</td><td></td><td></td></tr><tr><td>Transition bonds 0.90% to 5.63% due 2013 to 2024</td><td>1,659</td><td>262</td><td>2,890</td><td>401</td><td></td><td></td></tr><tr><td>CERC Corp.:</td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Senior notes 4.50% to 7.875% due 2013 to 2041</td><td>2,693</td><td>—</td><td>2,328</td><td>365</td><td></td><td></td></tr><tr><td>Commercial paper (6)</td><td>285</td><td>—</td><td>—</td><td>—</td><td></td><td></td></tr><tr><td>Other</td><td>1</td><td>—</td><td>1</td><td>—</td><td></td><td></td></tr><tr><td>Unamortized discount and premium</td><td>(63)</td><td>—</td><td>(57)</td><td>—</td><td></td><td></td></tr><tr><td>Total long-term debt</td><td>8,641</td><td>484</td><td>8,357</td><td>1,400</td><td></td><td></td></tr><tr><td>Total debt</td><td>$ 8,641</td><td>$ 546</td><td>$ 8,357</td><td>$ 1,438</td><td></td><td></td></tr></table>

(1) Includes amounts due or exchangeable within one year of the date noted.

(2) CenterPoint Energy’s ZENS obligation is bifurcated into a debt component and an embedded derivative component. For additional information regarding ZENS, see Note 9(b). As ZENS are exchangeable for cash at any time at the option of the holders, these notes are classified as a current portion of long-term debt.

(3) These series of debt are secured by first mortgage bonds of CenterPoint Houston.

(4) $218 million and $118 million of these series of debt were secured by general mortgage bonds of CenterPoint Houston at December 31, 2011 and 2012, respectively.

(5) These series of debt are secured by general mortgage bonds of CenterPoint Houston.



(6) Classified as long-term debt because the termination date of the facility that backstops the commercial paper is more than one year from the date noted.

## (a) Short-term Borrowings

Inventory Financing. Gas Operations has asset management agreements associated with its utility distribution service in Arkansas, north Louisiana and Oklahoma that extend through 2015. Pursuant to the provisions of the agreements, Gas Operations sells natural gas and agrees to repurchase an equivalent amount of natural gas during the winter heating seasons at the same cost, plus a financing charge. These transactions are accounted for as a financing and they had an associated principal obligation of $62 million and $38 million as of December 31, 2011 and 2012, respectively.

## (b) Long-term Debt

Transition and System Restoration Bonds. As of December 31, 2012, CenterPoint Houston had five special purpose subsidiaries consisting of transition and system restoration bond companies, which it consolidates, including Bond Company IV, which issued transition bonds in January 2012 as described below. The consolidated special purpose subsidiaries are wholly owned bankruptcy remote entities that were formed solely for the purpose of purchasing and owning transition or system restoration property through the issuance of transition bonds or system restoration bonds and activities incidental thereto. These transition bonds and system restoration bonds are payable only through the imposition and collection of “transition” or “system restoration” charges, as defined in the Texas Public Utility Regulatory Act, which are irrevocable, non-bypassable charges payable by most of CenterPoint Houston’s retail electric customers in order to provide recovery of authorized qualified costs. CenterPoint Houston has no payment obligations in respect of the transition and system restoration bonds other than to remit the applicable transition or system restoration charges it collects. Each special purpose entity is the sole owner of the right to impose, collect and receive the applicable transition or system restoration charges securing the bonds issued by that entity. Creditors of CenterPoint Energy or CenterPoint Houston have no recourse to any assets or revenues of the transition and system restoration bond companies (including the transition and system restoration charges), and the holders of transition bonds or system restoration bonds have no recourse to the assets or revenues of CenterPoint Energy or CenterPoint Houston.

In January 2012, Bond Company IV issued $1.695 billion of transition bonds in three tranches with interest rates ranging from 0.9012% to 3.0282% and final maturity dates ranging from April 15, 2018 to October 15, 2025. The transition bonds will be repaid through a charge imposed on customers in CenterPoint Houston's service territory.

Pollution Control Bonds. In February 2012, CenterPoint Energy purchased $275 million aggregate principal amount of pollution control bonds issued on its behalf at 100% of their principal amount plus accrued interest pursuant to the mandatory tender provisions of the bonds. The purchased pollution control bonds will remain outstanding and may be remarketed. Prior to the purchase, the pollution control bonds had fixed interest rates ranging from 5.15% to 5.95%. Additionally, in March 2012, CenterPoint Energy redeemed $100 million aggregate principal amount of pollution control bonds issued on its behalf at 100% of their principal amount plus accrued interest pursuant to the optional redemption provisions of the bonds. The redeemed pollution control bonds had a fixed interest rate of 5.25%.

General Mortgage Bonds. In August 2012, CenterPoint Houston issued $300 million of 2.25% general mortgage bonds due 2022 and $500 million of 3.55% general mortgage bonds due 2042. The net proceeds from the sale of the bonds were used to fund a portion of the redemption of the general mortgage bonds discussed below.

In August 2012, CenterPoint Houston redeemed $300 million principal amount of its 5.75% general mortgage bonds due 2014 at a price of 107.332% of their principal amount and $500 million principal amount of its 7.00% general mortgage bonds due 2014 at a price of 109.397% of their principal amount. Redemption premiums for the two series aggregated approximately $69 million and were deferred as regulatory assets.



Credit Facilities. As of December 31, 2011 and 2012, CenterPoint Energy, CenterPoint Houston and CERC Corp. had the following revolving credit facilities and utilization of such facilities (in millions):

<table><tr><td rowspan="2"></td><td rowspan="2">Size of Facility</td><td colspan="4">December 31, 2011</td><td colspan="4">December 31, 2012</td></tr><tr><td>Loans</td><td>Letters of Credit</td><td>Commercial Paper</td><td>Loans</td><td>Letters of Credit</td><td>Commercial Paper</td><td></td><td></td></tr><tr><td>CenterPoint Energy</td><td>$ 1,200</td><td>$ —</td><td>$ 16</td><td>$ —</td><td>$ —</td><td>$ —</td><td>$ 7</td><td>$ —</td><td></td></tr><tr><td>CenterPoint Houston</td><td>300</td><td>—</td><td>4</td><td>—</td><td>—</td><td>—</td><td>4</td><td>—</td><td></td></tr><tr><td>CERC Corp.</td><td>950</td><td>—</td><td>—</td><td>285</td><td>—</td><td>—</td><td>—</td><td>—</td><td></td></tr><tr><td>Total</td><td>$ 2,450</td><td>$ —</td><td>$ 20</td><td>$ 285</td><td>$ —</td><td>$ 11</td><td>$ —</td><td></td><td></td></tr></table>

CenterPoint Energy’s $1.2 billion credit facility, which is scheduled to terminate September 9, 2016, can be drawn at the London Interbank Offered Rate (LIBOR) plus 150 basis points based on CenterPoint Energy’s current credit ratings. The facility contains a debt (excluding transition and system restoration bonds) to earnings before interest, taxes, depreciation and amortization (EBITDA) covenant (as those terms are defined in the facility). The facility allows for a temporary increase of the permitted ratio in the financial covenant from 5 times to 5.5 times if CenterPoint Houston experiences damage from a natural disaster in its service territory and CenterPoint Energy certifies to the administrative agent that CenterPoint Houston has incurred system restoration costs reasonably likely to exceed $100 million in a consecutive twelve-month period, all or part of which CenterPoint Houston intends to seek to recover through securitization financing. Such temporary increase in the financial covenant would be in effect from the date CenterPoint Energy delivers its certification until the earliest to occur of (i) the completion of the securitization financing, (ii) the first anniversary of CenterPoint Energy’s certification or (iii) the revocation of such certification.

CenterPoint Houston’s $300 million credit facility, which is scheduled to terminate September 9, 2016, can be drawn at LIBOR plus 125 basis points based on CenterPoint Houston’s current credit ratings. The facility contains a debt (excluding transition and system restoration bonds) to total capitalization covenant which limits debt to 65% of the borrower’s total capitalization.

CERC Corp.’s $950 million credit facility, which is scheduled to terminate September 9, 2016, can be drawn at LIBOR plus 150 basis points based on CERC Corp.’s current credit ratings. The facility contains a debt to total capitalization covenant which limits debt to 65% of CERC's total capitalization.

CenterPoint Energy, CenterPoint Houston and CERC Corp. were in compliance with all debt covenants as of December 31, 2012.

Maturities. CenterPoint Energy’s maturities of long-term debt, capital leases and sinking fund requirements, excluding the ZENS obligation, are $1.3 billion in 2013, $514 million in 2014, $791 million in 2015, $716 million in 2016 and $1.0 billion in 2017. These maturities include transition and system restoration bond principal repayments on scheduled payment dates aggregating $447 million in 2013, $354 million in 2014, $372 million in 2015, $391 million in 2016 and $411 million in 2017.

Liens. As of December 31, 2012, CenterPoint Houston’s assets were subject to liens securing approximately $253 million of first mortgage bonds. Sinking or improvement fund and replacement fund requirements on the first mortgage bonds may be satisfied by certification of property additions. Sinking fund and replacement fund requirements for 2010, 2011 and 2012 have been satisfied by certification of property additions. The replacement fund requirement to be satisfied in 2013 is approximately $189 million, and the sinking fund requirement to be satisfied in 2013 is approximately $3 million. CenterPoint Energy expects CenterPoint Houston to meet these 2013 obligations by certification of property additions. As of December 31, 2012, CenterPoint Houston’s assets were also subject to liens securing approximately $2.4 billion of general mortgage bonds which are junior to the liens of the first mortgage bonds.



## (12) Income Taxes

The components of CenterPoint Energy’s income tax expense were as follows:

<table><tr><td rowspan="3"></td><td colspan="4">Year Ended December 31,</td></tr><tr><td>2010</td><td colspan="2">2011</td><td>2012</td></tr><tr><td colspan="4">(in millions)</td></tr><tr><td>Current income tax expense (benefit):</td><td></td><td></td><td></td><td></td></tr><tr><td>Federal</td><td>$     40</td><td>$      (63)</td><td>$      —</td><td></td></tr><tr><td>State</td><td>24</td><td>24</td><td>12</td><td></td></tr><tr><td>Total current expense (benefit)</td><td>64</td><td>(39)</td><td>12</td><td></td></tr><tr><td>Deferred income tax expense (benefit):</td><td></td><td></td><td></td><td></td></tr><tr><td>Federal</td><td>220</td><td>432</td><td>280</td><td></td></tr><tr><td>State</td><td>(21)</td><td>11</td><td>48</td><td></td></tr><tr><td>Total deferred expense</td><td>199</td><td>443</td><td>328</td><td></td></tr><tr><td>Total income tax expense</td><td>$     263</td><td>$     404</td><td>$     340</td><td></td></tr></table>

A reconciliation of the expected federal income tax expense using the federal statutory income tax rate to the actual income tax expense and resulting effective income tax rate is as follows:

<table><tr><td rowspan="3"></td><td colspan="4">Year Ended December 31,</td></tr><tr><td>2010</td><td colspan="2">2011</td><td>2012</td></tr><tr><td colspan="4">(in millions)</td></tr><tr><td>Income before income taxes and extraordinary item</td><td>$     705</td><td>$     1,174</td><td>$     757</td><td></td></tr><tr><td>Federal statutory income tax rate</td><td>35.0%</td><td>35.0%</td><td>35.0%</td><td></td></tr><tr><td>Expected federal income tax expense</td><td>247</td><td>411</td><td>265</td><td></td></tr><tr><td>Increase (decrease) in tax expense resulting from:</td><td></td><td></td><td></td><td></td></tr><tr><td>State income tax expense, net of federal income tax</td><td>2</td><td>22</td><td>39</td><td></td></tr><tr><td>Amortization of investment tax credit</td><td>(7)</td><td>(6)</td><td>(2)</td><td></td></tr><tr><td>Tax law change in deductibility of retiree health care costs</td><td>20</td><td>—</td><td>—</td><td></td></tr><tr><td>Increase (decrease) in settled and uncertain income tax positions</td><td>14</td><td>(5)</td><td>(33)</td><td></td></tr><tr><td>Goodwill impairment</td><td>—</td><td>—</td><td>88</td><td></td></tr><tr><td>Other, net</td><td>(13)</td><td>(18)</td><td>(17)</td><td></td></tr><tr><td>Total</td><td>16</td><td>(7)</td><td>75</td><td></td></tr><tr><td>Total income tax expense</td><td>$     263</td><td>$     404</td><td>$     340</td><td></td></tr><tr><td>Effective tax rate</td><td>37.3%</td><td>34.4%</td><td>44.9%</td><td></td></tr></table>

CenterPoint Energy recorded a non-tax deductible impairment of goodwill of $252 million in September 2012. CenterPoint Energy recorded a net decrease in income tax expense of $28 million in 2012 related to the release of certain income tax reserves due to its settlements with the Internal Revenue Service (IRS).

CenterPoint Energy recorded a $9 million decrease in tax expense in 2011 related to the release of income tax reserves on the tax normalization issue discussed below, which resulted in a net decrease in tax expense of $5 million for all uncertain tax positions. CenterPoint Energy recorded a net reduction in state income tax expense of approximately $17 million related to lower blended state tax rates and a reduction of the deferred tax liability recorded in December 2011.

CenterPoint Energy recorded a non-cash, $21 million increase to income tax expense in 2010 as a result of a change in tax law upon the enactment in March 2010 of the Patient Protection and Affordable Care Act and the related Health Care and Education Reconciliation Act of 2010. The change in tax law, which becomes effective for tax years beginning after December 31, 2012, eliminates the tax deductibility of the portion of retiree health care costs which are reimbursed by Medicare Part D subsidies. Based upon the actuarially determined net present value of lost future retiree health care deductions related to the subsidies, CenterPoint Energy reduced its deferred tax asset by approximately $32 million in March 2010. The portion of the reduction that



CenterPoint Energy believes will be recovered through the regulatory process, or approximately $11 million, was recorded as an adjustment to regulatory assets. The remaining $21 million of the reduction in CenterPoint Energy's deferred tax asset was recorded as a charge to income tax expense in the first quarter of 2010.

In December 2010, certain subsidiaries of CenterPoint Energy were restructured in order to achieve a more tax-efficient reporting structure. As a result of the restructuring, CenterPoint Energy recorded a net reduction in income tax expense of approximately $24 million related to the remeasurement of accumulated deferred income taxes. The net reduction in income tax expense is comprised of a decrease in state income tax expense, net of federal income tax, totaling approximately $29 million and an increase in income tax expense of approximately $5 million related to uncertain income tax positions.

The tax effects of temporary differences that give rise to significant portions of deferred tax assets and liabilities were as follows:

<table><tr><td rowspan="3"></td><td colspan="3">December 31,</td></tr><tr><td>2011</td><td>2012</td><td></td></tr><tr><td colspan="3">(in millions)</td></tr><tr><td>Deferred tax assets:</td><td></td><td></td><td></td></tr><tr><td>Current:</td><td></td><td></td><td></td></tr><tr><td>Allowance for doubtful accounts</td><td>$ 10</td><td>$ 10</td><td></td></tr><tr><td>Other</td><td>7</td><td>1</td><td></td></tr><tr><td>Total current deferred tax assets</td><td>17</td><td>11</td><td></td></tr><tr><td>Non-current:</td><td></td><td></td><td></td></tr><tr><td>Loss and credit carryforwards</td><td>214</td><td>90</td><td></td></tr><tr><td>Employee benefits</td><td>363</td><td>383</td><td></td></tr><tr><td>Other</td><td>68</td><td>64</td><td></td></tr><tr><td>Total non-current deferred tax assets before valuation allowance</td><td>645</td><td>537</td><td></td></tr><tr><td>Valuation allowance</td><td>(4)</td><td>(2)</td><td></td></tr><tr><td>Total non-current deferred tax assets, net of valuation allowance</td><td>641</td><td>535</td><td></td></tr><tr><td>Total deferred tax assets, net of valuation allowance</td><td>658</td><td>546</td><td></td></tr><tr><td>Deferred tax liabilities:</td><td></td><td></td><td></td></tr><tr><td>Current:</td><td></td><td></td><td></td></tr><tr><td>Unrealized gain on indexed debt securities</td><td>427</td><td>439</td><td></td></tr><tr><td>Unrealized gain on TW securities</td><td>97</td><td>151</td><td></td></tr><tr><td>Deferred gas costs</td><td>—</td><td>25</td><td></td></tr><tr><td>Total current deferred tax liabilities</td><td>524</td><td>615</td><td></td></tr><tr><td>Non-current:</td><td></td><td></td><td></td></tr><tr><td>Depreciation</td><td>2,849</td><td>3,279</td><td></td></tr><tr><td>Regulatory assets, net</td><td>1,499</td><td>1,278</td><td></td></tr><tr><td>Other</td><td>125</td><td>131</td><td></td></tr><tr><td>Total non-current deferred tax liabilities</td><td>4,473</td><td>4,688</td><td></td></tr><tr><td>Total deferred tax liabilities</td><td>4,997</td><td>5,303</td><td></td></tr><tr><td>Accumulated deferred income taxes, net</td><td>$ 4,339</td><td>$ 4,757</td><td></td></tr></table>

Tax Attribute Carryforwards and Valuation Allowance. At December 31, 2012, CenterPoint Energy has approximately $93 million of federal net operating loss carryforwards which begin to expire in 2031, and approximately $378 million of state net operating loss carryforwards which expire in various years between 2013 and 2032. CenterPoint Energy has approximately $7 million of federal capital loss carryforwards, $15 million of federal charitable contribution carryforwards and $2 million of general business credit carryforwards which expire in various years between 2013 and 2032.

CenterPoint Energy has approximately $244 million of state capital loss carryforwards which expire in 2017 for which management established a full valuation allowance of $3 million state tax effect ($2 million net of federal tax). The valuation allowance was established based upon management's evaluation that loss carryforwards may not be fully realized.



Uncertain Income Tax Positions. The following table reconciles the beginning and ending balance of CenterPoint Energy’s unrecognized tax benefits (expenses):

<table><tr><td rowspan="3"></td><td colspan="5">December 31,</td></tr><tr><td colspan="2">2010</td><td colspan="2">2011</td><td>2012</td></tr><tr><td colspan="4">(in millions)</td></tr><tr><td>Balance, beginning of year</td><td>$</td><td>187</td><td>$</td><td>252</td><td>$ 51</td></tr><tr><td>Tax Positions related to prior years:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Additions</td><td></td><td>9</td><td></td><td>(1)</td><td>—</td></tr><tr><td>Reductions</td><td></td><td>(4)</td><td></td><td>(203)</td><td>(75)</td></tr><tr><td>Tax Positions related to current year:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Additions</td><td></td><td>60</td><td></td><td>5</td><td>—</td></tr><tr><td>Settlements</td><td></td><td>—</td><td></td><td>(1)</td><td>1</td></tr><tr><td>Lapse of statute of limitations</td><td></td><td>—</td><td></td><td>(1)</td><td>—</td></tr><tr><td>Balance, end of year</td><td>$</td><td>252</td><td>$</td><td>51</td><td>$ (23)</td></tr></table>

The net decrease in the total amount of unrecognized tax benefits during 2012 is primarily related to the re-measurement of certain unrecognized tax benefits related to an issuance of new IRS guidance with respect to repairs on tangible property and CenterPoint Energy's IRS settlements for tax years 2006 through 2009. CenterPoint Energy has income tax refund claims pending with the IRS, as discussed below, resulting in the receivable balance for uncertain income tax positions as of December 31, 2012. CenterPoint Energy does not expect the change to the amount of unrecognized tax benefits over the twelve months ending December 31, 2013 to materially impact the financial position of CenterPoint Energy.

CenterPoint Energy has approximately $17 million, $21 million and $3 million of unrecognized tax benefits (expenses) that, if recognized, would affect the effective income tax rate for 2010, 2011 and 2012, respectively. CenterPoint Energy recognizes interest and penalties as a component of income tax expense. CenterPoint Energy recognized approximately $8 million of income tax expense, $13 million of income tax benefit and $7 million of income tax benefit related to interest on uncertain income tax positions during 2010, 2011 and 2012, respectively. CenterPoint Energy had approximately $1 million and $8 million of interest receivable on uncertain income tax positions accrued at December 31, 2011 and 2012, respectively.

Tax Audits and Settlements. CenterPoint Energy's consolidated federal income tax returns have been audited and settled through the 2009 tax year. CenterPoint Energy has filed claims for income tax refunds that are pending review by the IRS for tax years 2002, 2003 and 2004. CenterPoint Energy is currently under examination by the IRS for tax years 2010 and 2011 and is at various stages of the examination process. CenterPoint Energy has considered the effects of these examinations in its accrual for settled issues and liability for uncertain income tax positions as of December 31, 2012.

Under a tax allocation agreement, CenterPoint Energy and GenOn Energy, Inc. (GenOn) (as successor to the entity formerly known as RRI Energy, Inc., Reliant Resources, Inc., and Reliant Energy, Inc. (RRI)) had agreed to indemnify each other for tax liabilities arising out of IRS examinations. The IRS issued a closing agreement to RRI for tax year 1998. The tax deficiency assessed by the IRS is entirely the liability of GenOn with CenterPoint Energy to be indemnified for both tax and interest. Accordingly, during 2012 CenterPoint Energy paid a federal liability of approximately $32 million offset with a receipt from GenOn of $26 million and a deferred tax asset of $5 million pertaining to the federal benefit on the deductibility of interest.

## (13) Commitments and Contingencies

## (a) Natural Gas Supply Commitments

Natural gas supply commitments include natural gas contracts related to CenterPoint Energy’s Natural Gas Distribution and Competitive Natural Gas Sales and Services business segments, which have various quantity requirements and durations, that are not classified as non-trading derivative assets and liabilities in CenterPoint Energy’s Consolidated Balance Sheets as of December 31, 2011 and 2012 as these contracts meet the exception to be classified as "normal purchases contracts" or do not meet the definition of a derivative. Natural gas supply commitments also include natural gas transportation contracts that do not meet the definition of a derivative. As of December 31, 2012, minimum payment obligations for natural gas supply commitments are approximately $430 million in 2013, $344 million in 2014, $214 million in 2015, $149 million in 2016, $96 million in 2017 and $156 million after 2017.



## (b) Asset Management Agreements

Gas Operations has asset management agreements associated with its utility distribution service in Arkansas, Louisiana, Mississippi, Oklahoma and Texas. Generally, these asset management agreements are contracts between Gas Operations and an asset manager that are intended to transfer the working capital obligation and maximize the utilization of the assets. In these agreements, Gas Operations agreed to release transportation and storage capacity to other parties to manage gas storage, supply and delivery arrangements for Gas Operations and to use the released capacity for other purposes when it is not needed for Gas Operations. Gas Operations is compensated by the asset manager through payments made over the life of the agreements based in part on the results of the asset optimization. Under the provisions of these asset management agreements, Gas Operations has an obligation to purchase its winter storage requirements from the asset manager. The agreements have varying terms, the longest of which expires in 2016.

## (c) Lease Commitments

The following table sets forth information concerning CenterPoint Energy’s obligations under non-cancelable long-term operating leases at December 31, 2012, which primarily consist of rental agreements for building space, data processing equipment, compression equipment and rights of way (in millions):

<table><tr><td>2013</td><td>$</td><td>12</td></tr><tr><td>2014</td><td></td><td>9</td></tr><tr><td>2015</td><td></td><td>6</td></tr><tr><td>2016</td><td></td><td>5</td></tr><tr><td>2017</td><td></td><td>3</td></tr><tr><td>2018 and beyond</td><td></td><td>13</td></tr><tr><td>Total</td><td>$</td><td>48</td></tr></table>

Total lease expense for all operating leases was $77 million, $43 million and $27 million during 2010, 2011 and 2012, respectively.

## (d) Other Commitments

In December 2008, CenterPoint Energy entered into an agreement to purchase software licenses, support and maintenance. Payment obligations under this agreement are $6 million in 2013.

## (e) Long-Term Gas Gathering and Treating Agreements

CenterPoint Energy Field Services, LLC (CEFS) has long-term agreements with an indirect wholly owned subsidiary of Encana Corporation (Encana) and an indirect wholly owned subsidiary of Royal Dutch Shell plc (Shell) to provide gathering and treating services for their natural gas production from certain Haynesville Shale and Bossier Shale formations in Texas and Louisiana.

Under the long-term agreements, Encana or Shell may elect to require CEFS to expand the capacity of its gathering systems by up to an additional 1.3 Bcf per day. CEFS estimates that the cost to expand the capacity of its gathering systems by an additional 1.3 Bcf per day would be as much as $440 million. Encana and Shell would provide incremental volume commitments in connection with an election to expand system capacity.

## (f) Legal, Environmental and Other Regulatory Matters

## Legal Matters

Gas Market Manipulation Cases. CenterPoint Energy, CenterPoint Houston or their predecessor, Reliant Energy, Incorporated (Reliant Energy), and certain of their former subsidiaries have been named as defendants in certain lawsuits described below. Under a master separation agreement between CenterPoint Energy and a former subsidiary, RRI, CenterPoint Energy and its subsidiaries are entitled to be indemnified by RRI and its successors for any losses, including attorneys' fees and other costs, arising out of these lawsuits. In May 2009, RRI sold its Texas retail business to a subsidiary of NRG Energy, Inc. (NRG) and RRI changed its name to RRI Energy, Inc. In December 2010, Mirant Corporation merged with and became a wholly owned subsidiary of RRI, and RRI changed its name to GenOn Energy, Inc. (GenOn). In December 2012, NRG acquired GenOn through a merger in which GenOn became a wholly owned subsidiary of NRG. None of the sale of the retail business, the merger with Mirant



Corporation, or the acquisition of GenOn by NRG alters RRI’s (now GenOn’s) contractual obligations to indemnify CenterPoint Energy and its subsidiaries, including CenterPoint Houston, for certain liabilities, including their indemnification obligations regarding the gas market manipulation litigation, nor does it affect the terms of existing guaranty arrangements for certain GenOn gas transportation contracts discussed below.

A large number of lawsuits were filed against numerous gas market participants in a number of federal and western state courts in connection with the operation of the natural gas markets in 2000-2002. CenterPoint Energy’s former affiliate, RRI, was a participant in gas trading in the California and Western markets. These lawsuits, many of which were filed as class actions, allege violations of state and federal antitrust laws. Plaintiffs in these lawsuits are seeking a variety of forms of relief, including, among others, recovery of compensatory damages (in some cases in excess of $1 billion), a trebling of compensatory damages, full consideration damages and attorneys’ fees. CenterPoint Energy and/or Reliant Energy were named in approximately 30 of these lawsuits, which were instituted between 2003 and 2009. CenterPoint Energy and its affiliates have since been released or dismissed from all but two of such cases. CenterPoint Energy Services, Inc. (CES), a subsidiary of CERC Corp., is a defendant in a case now pending in federal court in Nevada alleging a conspiracy to inflate Wisconsin natural gas prices in 2000-2002. In July 2011, the court issued an order dismissing the plaintiffs’ claims against the other defendants in the case, each of whom had demonstrated FERC jurisdictional sales for resale during the relevant period, based on federal preemption. The plaintiffs have appealed this ruling to the United States Court of Appeals for the Ninth Circuit. Additionally, CenterPoint Energy was a defendant in a lawsuit filed in state court in Nevada that was dismissed in 2007, but in March 2010 the plaintiffs appealed the dismissal to the Nevada Supreme Court. In September 2012, the Nevada Supreme Court affirmed the dismissal. In October 2012, the Nevada Supreme Court granted the plaintiffs’ motion to stay the dismissal of this case pending the filing and final disposition of their petition for a writ of certiorari to the Supreme Court of the United States. In December 2012, the plaintiffs filed a petition for writ of certiorari with the Supreme Court of the United States. On January 4, 2013, the Supreme Court removed the case from its docket since the plaintiffs’ petition exceeded the applicable word limit. In February 2013, the plaintiffs filed a corrected petition with the Supreme Court. CenterPoint Energy believes that neither it nor CES is a proper defendant in these remaining cases and will continue to pursue dismissal from those cases. CenterPoint Energy does not expect the ultimate outcome of these remaining matters to have a material impact on its financial condition, results of operations or cash flows.

Natural Gas Measurement Lawsuits. CERC Corp. and certain of its subsidiaries are defendants in two mismeasurement lawsuits brought against approximately 245 pipeline companies and their affiliates pending in state court in Stevens County, Kansas. In one case (originally filed in May 1999 and amended four times), the plaintiffs purport to represent a class of royalty owners who allege that the defendants have engaged in systematic mismeasurement of the volume of natural gas for more than 25 years. The plaintiffs amended their petition in this suit in July 2003 in response to an order from the judge denying certification of the plaintiffs' alleged class. In the amendment, the plaintiffs dismissed their claims against certain defendants (including two CERC Corp. subsidiaries), limited the scope of the class of plaintiffs they purport to represent and eliminated previously asserted claims based on mismeasurement of the Btu content of the gas. The same plaintiffs then filed a second lawsuit, again as representatives of a putative class of royalty owners in which they assert their claims that the defendants have engaged in systematic mismeasurement of the Btu content of natural gas for more than 25 years. In both lawsuits, the plaintiffs seek compensatory damages, along with statutory penalties, treble damages, interest, costs and fees. In September 2009, the district court in Stevens County, Kansas, denied plaintiffs' request for class certification of their case and, in March 2010, denied the plaintiffs' request for reconsideration of that order. In July 2012, the plaintiffs filed a motion to dismiss certain defendants from both lawsuits, including the remaining CenterPoint Energy defendants.

CERC believes that there has been no systematic mismeasurement of gas and that these lawsuits are without merit. CERC and CenterPoint Energy do not expect the ultimate outcome of the lawsuits to have a material impact on the financial condition, results of operations or cash flows of either CenterPoint Energy or CERC.

## Environmental Matters

Manufactured Gas Plant Sites. CERC and its predecessors operated manufactured gas plants (MGPs) in the past. In Minnesota, CERC has completed remediation on two sites, other than ongoing monitoring and water treatment. There are five remaining sites in CERC’s Minnesota service territory. CERC believes that it has no liability with respect to two of these sites.

As of December 31, 2012, CERC had recorded a liability of $14 million for remediation of these Minnesota sites. The estimated range of possible remediation costs for the sites CERC believes it has responsibility for was $6 million to $41 million based on remediation continuing for 30 to 50 years. The cost estimates are based on studies of a site or industry average costs for remediation of sites of similar size. The actual remediation costs will be dependent upon the number of sites to be remediated, the participation of other potentially responsible parties (PRPs), if any, and the remediation methods used. The Minnesota Public Utilities Commission includes approximately $285,000 annually in rates to fund normal on-going remediation costs. As of December 31, 2012, CERC had collected $5.8 million from insurance companies to be used for future environmental remediation.



In addition to the Minnesota sites, the United States Environmental Protection Agency and other regulators have investigated MGP sites that were owned or operated by CERC or may have been owned by one of its former affiliates. CERC and CenterPoint Energy do not expect the ultimate outcome of these investigations will have a material adverse impact on the financial condition, results of operations or cash flows of either CenterPoint Energy or CERC.

Asbestos. Some facilities owned by CenterPoint Energy contain or have contained asbestos insulation and other asbestos-containing materials. CenterPoint Energy or its subsidiaries have been named, along with numerous others, as a defendant in lawsuits filed by a number of individuals who claim injury due to exposure to asbestos. Some of the claimants have worked at locations owned by subsidiaries of CenterPoint Energy, but most existing claims relate to facilities previously owned by CenterPoint Energy’s subsidiaries. CenterPoint Energy anticipates that additional claims like those received may be asserted in the future. In 2004 and early 2005, CenterPoint Energy sold its generating business, to which most of these claims relate, to a company which is now an affiliate of NRG. Under the terms of the arrangements regarding separation of the generating business from CenterPoint Energy and its sale of that business, ultimate financial responsibility for uninsured losses from claims relating to the generating business has been assumed by the NRG affiliate, but CenterPoint Energy has agreed to continue to defend such claims to the extent they are covered by insurance maintained by CenterPoint Energy, subject to reimbursement of the costs of such defense by the NRG affiliate. Although their ultimate outcome cannot be predicted at this time, CenterPoint Energy intends to continue vigorously contesting claims that it does not consider to have merit and, based on its experience to date, does not expect these matters, either individually or in the aggregate, to have a material adverse effect on CenterPoint Energy’s financial condition, results of operations or cash flows.

Other Environmental. From time to time CenterPoint Energy identifies the presence of environmental contaminants on property where its subsidiaries conduct or have conducted operations. Other such sites involving contaminants may be identified in the future. CenterPoint Energy has and expects to continue to remediate identified sites consistent with its legal obligations. From time to time CenterPoint Energy has received notices from regulatory authorities or others regarding its status as a PRP in connection with sites found to require remediation due to the presence of environmental contaminants. In addition, CenterPoint Energy has been named from time to time as a defendant in litigation related to such sites. Although the ultimate outcome of such matters cannot be predicted at this time, CenterPoint Energy does not expect, based on its experience to date, these matters, either individually or in the aggregate, to have a material adverse effect on CenterPoint Energy’s financial condition, results of operations or cash flows.

## Other Proceedings

CenterPoint Energy is involved in other legal, environmental, tax and regulatory proceedings before various courts, regulatory commissions and governmental agencies regarding matters arising in the ordinary course of business. Some of these proceedings involve substantial amounts. CenterPoint Energy regularly analyzes current information and, as necessary, provides accruals for probable liabilities on the eventual disposition of these matters. CenterPoint Energy does not expect the disposition of these matters to have a material adverse effect on CenterPoint Energy’s financial condition, results of operations or cash flows.

## (g) Guaranties

Prior to the distribution of CenterPoint Energy’s ownership in RRI to its shareholders, CERC had guaranteed certain contractual obligations of what became RRI’s trading subsidiary. When the companies separated, RRI agreed to secure CERC against obligations under the guaranties RRI had been unable to extinguish by the time of separation. Pursuant to such agreement, as amended in December 2007, RRI (now GenOn) agreed to provide to CERC cash or letters of credit as security against CERC’s obligations under its remaining guaranties for demand charges under certain gas transportation agreements if and to the extent changes in market conditions expose CERC to a risk of loss on those guaranties based on an annual calculation, with any required collateral to be posted each December. The undiscounted maximum potential payout of the demand charges under these transportation contracts, which will be in effect until 2018, was approximately $73 million as of December 31, 2012. Based on market conditions in the fourth quarter of 2012 at the time the most recent annual calculation was made under the agreement, GenOn was not obligated to post any security. As a result, CenterPoint Energy returned to GenOn in the fourth quarter of 2012 the approximately $28 million of aggregate collateral previously posted by GenOn under the agreement. If GenOn should fail to perform the contractual obligations, CERC could have to honor its guarantee and, in such event, any collateral then provided as security may be insufficient to satisfy CERC’s obligations.



## (14) Earnings Per Share

The following table reconciles numerators and denominators of CenterPoint Energy’s basic and diluted earnings per share calculations:

<table><tr><td rowspan="3"></td><td colspan="4">For the Year Ended December 31,</td></tr><tr><td>2010</td><td colspan="2">2011</td><td>2012</td></tr><tr><td colspan="4">(in millions, except per share and share amounts)</td></tr><tr><td>Income before extraordinary item</td><td>$     442</td><td>$     770</td><td>$     417</td><td></td></tr><tr><td>Extraordinary item, net of tax</td><td>—</td><td>587</td><td>—</td><td></td></tr><tr><td>Net income</td><td>$     442</td><td>$     1,357</td><td>$     417</td><td></td></tr><tr><td>Basic weighted average shares outstanding</td><td>409,721,000</td><td>425,636,000</td><td>427,189,000</td><td></td></tr><tr><td>Plus: Incremental shares from assumed conversions:</td><td></td><td></td><td></td><td></td></tr><tr><td>Stock options (1)</td><td>470,000</td><td>347,000</td><td>152,000</td><td></td></tr><tr><td>Restricted stock</td><td>2,585,000</td><td>2,741,000</td><td>2,453,000</td><td></td></tr><tr><td>Diluted weighted average shares</td><td>412,776,000</td><td>428,724,000</td><td>429,794,000</td><td></td></tr><tr><td>Basic earnings per share:</td><td></td><td></td><td></td><td></td></tr><tr><td>Income before extraordinary item</td><td>$     1.08</td><td>$     1.81</td><td>$     0.98</td><td></td></tr><tr><td>Extraordinary item, net of tax</td><td>—</td><td>1.38</td><td>—</td><td></td></tr><tr><td>Net income</td><td>$     1.08</td><td>$     3.19</td><td>$     0.98</td><td></td></tr><tr><td>Diluted earnings per share:</td><td></td><td></td><td></td><td></td></tr><tr><td>Income before extraordinary item</td><td>$     1.07</td><td>$     1.80</td><td>$     0.97</td><td></td></tr><tr><td>Extraordinary item, net of tax</td><td>—</td><td>1.37</td><td>—</td><td></td></tr><tr><td>Net income</td><td>$     1.07</td><td>$     3.17</td><td>$     0.97</td><td></td></tr></table>

(1) Options to purchase 1,458,598 shares were outstanding for the year ended December 31, 2010, but were not included in the computation of diluted earnings per share because the options’ exercise price was greater than the average market price of the common shares for the respective years.



## (15) Unaudited Quarterly Information

Summarized quarterly financial data is as follows:

Year Ended December 31, 2011

<table><tr><td></td><td>First Quarter</td><td>Second Quarter</td><td>Third (2) Quarter</td><td>Fourth Quarter</td></tr><tr><td></td><td colspan="4">(in millions, except per share amounts)</td></tr><tr><td>Revenues</td><td>$ 2,587</td><td>$ 1,837</td><td>$ 1,881</td><td>$ 2,145</td></tr><tr><td>Operating income</td><td>364</td><td>303</td><td>357</td><td>274</td></tr><tr><td>Income before extraordinary item</td><td>148</td><td>119</td><td>386</td><td>117</td></tr><tr><td>Extraordinary item, net of tax</td><td>—</td><td>—</td><td>587</td><td>—</td></tr><tr><td>Net income</td><td>$ 148</td><td>$ 119</td><td>$ 973</td><td>$ 117</td></tr><tr><td>Basic earnings per share(1)</td><td></td><td></td><td></td><td></td></tr><tr><td>Income before extraordinary item</td><td>$ 0.35</td><td>$ 0.28</td><td>$ 0.90</td><td>$ 0.27</td></tr><tr><td>Extraordinary item, net of tax</td><td>—</td><td>—</td><td>1.38</td><td>—</td></tr><tr><td>Net income</td><td>$ 0.35</td><td>$ 0.28</td><td>$ 2.28</td><td>$ 0.27</td></tr><tr><td>Diluted earnings per share(1)</td><td></td><td></td><td></td><td></td></tr><tr><td>Income before extraordinary item</td><td>$ 0.35</td><td>$ 0.28</td><td>$ 0.90</td><td>$ 0.27</td></tr><tr><td>Extraordinary item, net of tax</td><td>—</td><td>—</td><td>1.37</td><td>—</td></tr><tr><td>Net income</td><td>$ 0.35</td><td>$ 0.28</td><td>$ 2.27</td><td>$ 0.27</td></tr></table>

Year Ended December 31, 2012

<table><tr><td></td><td>First Quarter</td><td>Second Quarter</td><td>Third Quarter</td><td>Fourth Quarter</td></tr><tr><td></td><td colspan="4">(in millions, except per share amounts)</td></tr><tr><td>Revenues</td><td>$ 2,084</td><td>$ 1,525</td><td>$ 1,705</td><td>$ 2,138</td></tr><tr><td>Operating income</td><td>338</td><td>302</td><td>88</td><td>310</td></tr><tr><td>Net income</td><td>147</td><td>126</td><td>10</td><td>134</td></tr><tr><td>Basic earnings per share(1)</td><td>$ 0.34</td><td>$ 0.29</td><td>$ 0.02</td><td>$ 0.31</td></tr><tr><td>Diluted earnings per share(1)</td><td>$ 0.34</td><td>$ 0.29</td><td>$ 0.02</td><td>$ 0.31</td></tr></table>

(1) Quarterly earnings per common share are based on the weighted average number of shares outstanding during the quarter, and the sum of the quarters may not equal annual earnings per common share.

(2) During the third quarter of 2011, CenterPoint Energy recorded an extraordinary gain of $587 million, after-tax, related to the Final Order and a $224 million, after-tax, return on true-up balance included in Income before extraordinary item related to a portion of interest on the appealed amount as discussed in Note 5(b).

## (16) Reportable Business Segments

CenterPoint Energy’s determination of reportable business segments considers the strategic operating units under which CenterPoint Energy manages sales, allocates resources and assesses performance of various products and services to wholesale or retail customers in differing regulatory environments. The accounting policies of the business segments are the same as those described in the summary of significant accounting policies except that some executive benefit costs have not been allocated to business segments. CenterPoint Energy uses operating income as the measure of profit or loss for its business segments.

CenterPoint Energy’s reportable business segments include the following: Electric Transmission & Distribution, Natural Gas Distribution, Competitive Natural Gas Sales and Services, Interstate Pipelines, Field Services and Other Operations. The electric



transmission and distribution function (CenterPoint Houston) is reported in the Electric Transmission & Distribution business segment. Natural Gas Distribution consists of intrastate natural gas sales to, and natural gas transportation and distribution for, residential, commercial, industrial and institutional customers. Competitive Natural Gas Sales and Services represents CenterPoint Energy’s non-rate regulated gas sales and services operations. The Interstate Pipelines business segment includes the interstate natural gas pipeline operations. The Field Services business segment includes the non-rate regulated natural gas gathering, processing and treating operations. Other Operations consists primarily of other corporate operations which support all of CenterPoint Energy’s business operations.

Long-lived assets include net property, plant and equipment, goodwill and other intangibles and equity investments in unconsolidated subsidiaries. Intersegment sales are eliminated in consolidation.

Financial data for business segments and products and services are as follows (in millions):

<table><tr><td></td><td>Revenues from External Customers</td><td>Intersegment Revenues</td><td>Depreciation and Amortization</td><td>Operating Income (Loss)</td><td>Total Assets</td><td>Expenditures for Long-Lived Assets</td></tr><tr><td>As of and for the year ended December 31, 2010:</td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Electric Transmission &amp; Distribution</td><td>$ 2,205 (1)</td><td>$ —</td><td>$ 582</td><td>$ 567</td><td>$ 9,817</td><td>$ 463</td></tr><tr><td>Natural Gas Distribution</td><td>3,199</td><td>14</td><td>166</td><td>231</td><td>4,575</td><td>202</td></tr><tr><td>Competitive Natural Gas Sales and Services</td><td>2,617</td><td>34</td><td>4</td><td>16</td><td>1,190</td><td>2</td></tr><tr><td>Interstate Pipelines(2)</td><td>464</td><td>137</td><td>52</td><td>270</td><td>3,672</td><td>102</td></tr><tr><td>Field Services(3)</td><td>289</td><td>49</td><td>25</td><td>151</td><td>1,803</td><td>668</td></tr><tr><td>Other</td><td>11</td><td>—</td><td>35</td><td>14</td><td>2,184 (4)</td><td>25</td></tr><tr><td>Reconciling Eliminations</td><td>—</td><td>(234)</td><td>—</td><td>—</td><td>(3,130)</td><td>—</td></tr><tr><td>Consolidated</td><td>$ 8,785</td><td>$ —</td><td>$ 864</td><td>$ 1,249</td><td>$ 20,111</td><td>$ 1,462</td></tr><tr><td>As of and for the year ended December 31, 2011:</td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Electric Transmission &amp; Distribution</td><td>$ 2,337 (1)</td><td>$ —</td><td>$ 587</td><td>$ 623</td><td>$ 11,221</td><td>$ 538</td></tr><tr><td>Natural Gas Distribution</td><td>2,823</td><td>18</td><td>166</td><td>226</td><td>4,636</td><td>295</td></tr><tr><td>Competitive Natural Gas Sales and Services</td><td>2,488</td><td>23</td><td>5</td><td>6</td><td>1,089</td><td>5</td></tr><tr><td>Interstate Pipelines(2)</td><td>421</td><td>132</td><td>54</td><td>248</td><td>3,867</td><td>98</td></tr><tr><td>Field Services(3)</td><td>370</td><td>42</td><td>37</td><td>189</td><td>1,894</td><td>201</td></tr><tr><td>Other</td><td>11</td><td>—</td><td>37</td><td>6</td><td>2,318 (4)</td><td>54</td></tr><tr><td>Reconciling Eliminations</td><td>—</td><td>(215)</td><td>—</td><td>—</td><td>(3,322)</td><td>—</td></tr><tr><td>Consolidated</td><td>$ 8,450</td><td>$ —</td><td>$ 886</td><td>$ 1,298</td><td>$ 21,703</td><td>$ 1,191</td></tr><tr><td>As of and for the year ended December 31, 2012:</td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Electric Transmission &amp; Distribution</td><td>$ 2,540 (1)</td><td>$ —</td><td>$ 729</td><td>$ 639</td><td>$ 11,174</td><td>$ 599</td></tr><tr><td>Natural Gas Distribution</td><td>2,320</td><td>22</td><td>173</td><td>226</td><td>4,775</td><td>359</td></tr><tr><td>Competitive Natural Gas Sales and Services</td><td>1,758</td><td>26</td><td>6</td><td>(250)</td><td>839</td><td>6</td></tr><tr><td>Interstate Pipelines(2)</td><td>356</td><td>146</td><td>56</td><td>207</td><td>4,004</td><td>132</td></tr><tr><td>Field Services(3)</td><td>467</td><td>39</td><td>50</td><td>214</td><td>2,453</td><td>52</td></tr><tr><td>Other</td><td>11</td><td>—</td><td>36</td><td>2</td><td>2,600 (4)</td><td>40</td></tr><tr><td>Reconciling Eliminations</td><td>—</td><td>(233)</td><td>—</td><td>—</td><td>(2,974)</td><td>—</td></tr><tr><td>Consolidated</td><td>$ 7,452</td><td>$ —</td><td>$ 1,050</td><td>$ 1,038</td><td>$ 22,871</td><td>$ 1,188</td></tr></table>

(1) Sales to affiliates of NRG in 2010, 2011 and 2012 represented approximately $583 million, $594 million and $648 million, respectively, of CenterPoint Houston's transmission and distribution revenues. Sales to affiliates of Energy Future Holdings Corp. in 2010, 2011 and 2012 represented approximately $185 million, $182 million and $162 million, respectively, of CenterPoint Houston's transmission and distribution revenues.

(2) Interstate Pipelines recorded equity income of $19 million, $21 million and $26 million in the years ended December 31, 2010, 2011 and 2012, respectively, from its 50% interest in SESH, a jointly-owned pipeline. These amounts are included



in Equity in earnings of unconsolidated affiliates under the Other Income (Expense) caption. Interstate Pipelines' investment in SESH was $413 million, $409 million and $404 million as of December 31, 2010, 2011 and 2012 and is included in Investment in unconsolidated affiliates.

(3) Field Services recorded equity income of $10 million, $9 million and $5 million for the years ended December 31, 2010, 2011 and 2012, respectively, from its 50% interest in a jointly-owned gas processing plant. These amounts are included in Equity in earnings of unconsolidated affiliates under the Other Income (Expense) caption. Field Services' investment in the jointly-owned gas processing plant was $55 million and $63 million as of December 31, 2010 and 2011, respectively, and is included in Investment in unconsolidated affiliates. Beginning on August 1, 2012, financial results for Waskom are included in operating income due to the July 31, 2012 purchase of the 50% interest in Waskom that CenterPoint Energy did not already own.

(4) Included in total assets of Other Operations as of December 31, 2010, 2011 and 2012, are pension and other postemployment related regulatory assets of $704 million, $796 million and $832 million, respectively.

<table><tr><td rowspan="3">Revenues by Products and Services:</td><td colspan="4">Year Ended December 31,</td></tr><tr><td>2010</td><td>2011</td><td>2012</td><td></td></tr><tr><td colspan="4">(in millions)</td></tr><tr><td>Electric delivery</td><td>$ 2,205</td><td>$ 2,337</td><td>$ 2,540</td><td></td></tr><tr><td>Retail gas sales</td><td>4,412</td><td>4,019</td><td>3,328</td><td></td></tr><tr><td>Wholesale gas sales</td><td>1,250</td><td>1,149</td><td>613</td><td></td></tr><tr><td>Gas transportation and processing</td><td>785</td><td>824</td><td>847</td><td></td></tr><tr><td>Energy products and services</td><td>133</td><td>121</td><td>124</td><td></td></tr><tr><td>Total</td><td>$ 8,785</td><td>$ 8,450</td><td>$ 7,452</td><td></td></tr></table>

## (17) Subsequent Events

On January 25, 2013, CenterPoint Energy’s board of directors declared a regular quarterly cash dividend of $0.2075 per share of common stock payable on March 8, 2013, to shareholders of record as of the close of business on February 15, 2013.

Item 9. Changes in and Disagreements with Accountants on Accounting and Financial Disclosure

None.

Item 9A. Controls and Procedures

Disclosure Controls And Procedures

In accordance with Exchange Act Rules 13a-15 and 15d-15, we carried out an evaluation, under the supervision and with the participation of management, including our principal executive officer and principal financial officer, of the effectiveness of our disclosure controls and procedures as of the end of the period covered by this report. Based on that evaluation, our principal executive officer and principal financial officer concluded that our disclosure controls and procedures were effective as of December 31, 2012 to provide assurance that information required to be disclosed in our reports filed or submitted under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission’s rules and forms and such information is accumulated and communicated to our management, including our principal executive officer and principal financial officer, as appropriate to allow timely decisions regarding disclosure.

There has been no change in our internal controls over financial reporting that occurred during the three months ended December 31, 2012 that has materially affected, or is reasonably likely to materially affect, our internal controls over financial reporting.

Management’s Annual Report on Internal Control over Financial Reporting

See report set forth above in Item 8, “Financial Statements and Supplementary Data.”

Report of Independent Registered Public Accounting Firm on Internal Control Over Financial Reporting



See report set forth above in Item 8, “Financial Statements and Supplementary Data.”

## Item 9B. Other Information

None.

## PART III

## Item 10. Directors, Executive Officers and Corporate Governance

The information called for by Item 10, to the extent not set forth in “Executive Officers” in Item 1, will be set forth in the definitive proxy statement relating to CenterPoint Energy’s 2013 annual meeting of shareholders pursuant to SEC Regulation 14A. Such definitive proxy statement relates to a meeting of shareholders involving the election of directors and the portions thereof called for by Item 10 are incorporated herein by reference pursuant to Instruction G to Form 10-K.

## Item 11. Executive Compensation

The information called for by Item 11 will be set forth in the definitive proxy statement relating to CenterPoint Energy’s 2013 annual meeting of shareholders pursuant to SEC Regulation 14A. Such definitive proxy statement relates to a meeting of shareholders involving the election of directors and the portions thereof called for by Item 11 are incorporated herein by reference pursuant to Instruction G to Form 10-K.

## Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters

The information called for by Item 12 will be set forth in the definitive proxy statement relating to CenterPoint Energy’s 2013 annual meeting of shareholders pursuant to SEC Regulation 14A. Such definitive proxy statement relates to a meeting of shareholders involving the election of directors and the portions thereof called for by Item 12 are incorporated herein by reference pursuant to Instruction G to Form 10-K.

## Item 13. Certain Relationships and Related Transactions, and Director Independence

The information called for by Item 13 will be set forth in the definitive proxy statement relating to CenterPoint Energy’s 2013 annual meeting of shareholders pursuant to SEC Regulation 14A. Such definitive proxy statement relates to a meeting of shareholders involving the election of directors and the portions thereof called for by Item 13 are incorporated herein by reference pursuant to Instruction G to Form 10-K.

## Item 14. Principal Accounting Fees and Services

The information called for by Item 14 will be set forth in the definitive proxy statement relating to CenterPoint Energy’s 2013 annual meeting of shareholders pursuant to SEC Regulation 14A. Such definitive proxy statement relates to a meeting of shareholders involving the election of directors and the portions thereof called for by Item 14 are incorporated herein by reference pursuant to Instruction G to Form 10-K.



## PART IV

## Item 15. Exhibits and Financial Statement Schedules

(a)(1) Financial Statements.

Report of Independent Registered Public Accounting Firm.....55
Statements of Consolidated Income for the Three Years Ended December 31, 2012.....58
Statements of Consolidated Comprehensive Income for the Three Years Ended December 31, 2012.....59
Consolidated Balance Sheets at December 31, 2011 and 2012.....60
Statements of Consolidated Cash Flows for the Three Years Ended December 31, 2012.....61
Statements of Consolidated Shareholders' Equity for the Three Years Ended December 31, 2012.....62
Notes to Consolidated Financial Statements.....63

(a)(2) Financial Statement Schedules for the Three Years Ended December 31, 2011

Report of Independent Registered Public Accounting Firm..... 100
I — Condensed Financial Information of CenterPoint Energy, Inc. (Parent Company)..... 101
II — Valuation and Qualifying Accounts..... 106

The following schedules are omitted because of the absence of the conditions under which they are required or because the required information is included in the financial statements:

III, IV and V.

(a)(3) Exhibits.

See Index of Exhibits in CenterPoint Energy's Annual Report on Form 10-K for the year ended December 31, 2012 filed with the Securities and Exchange Commission on February 27, 2013, which can be found on CenterPoint Energy's website at www.centerpointenergy.com/investors and at www.sec.gov.



# REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Board of Directors and Shareholders of

CenterPoint Energy, Inc.

Houston, Texas

We have audited the consolidated financial statements of CenterPoint Energy, Inc. and subsidiaries (the "Company") as of December 31, 2012 and 2011, and for each of the three years in the period ended December 31, 2012, and the Company's internal control over financial reporting as of December 31, 2012, and have issued our reports thereon dated February 27, 2013; such reports are included elsewhere in this Form 10-K. Our audits also included the financial statement schedules of the Company listed in the index at Item 15 (a)(2). These financial statement schedules are the responsibility of the Company's management. Our responsibility is to express an opinion based on our audits. In our opinion, such financial statement schedules, when considered in relation to the basic consolidated financial statements taken as a whole, present fairly, in all material respects, the information set forth therein.

/s/ DELOITTE & TOUCHE LLP

Houston, Texas

February 27, 2013



## CENTERPOINT ENERGY, INC.

## SCHEDULE I — CONDENSED FINANCIAL INFORMATION OF CENTERPOINT ENERGY, INC. (PARENT COMPANY)

## STATEMENTS OF INCOME

<table><tr><td rowspan="3"></td><td colspan="4">For the Year Ended December 31,</td></tr><tr><td>2010</td><td colspan="2">2011</td><td>2012</td></tr><tr><td colspan="4">(in millions)</td></tr><tr><td>Expenses:</td><td></td><td></td><td></td><td></td></tr><tr><td>Operation and Maintenance Expenses</td><td>$ (12)</td><td>$ (12)</td><td>$ (12)</td><td>$ (20)</td></tr><tr><td>Total</td><td>(12)</td><td>(12)</td><td>(12)</td><td>(20)</td></tr><tr><td>Other Income (Expense):</td><td></td><td></td><td></td><td></td></tr><tr><td>Interest Income from Subsidiaries</td><td>8</td><td>7</td><td>10</td><td></td></tr><tr><td>Other Income (Expense)</td><td>(8)</td><td>—</td><td>6</td><td></td></tr><tr><td>Gain (Loss) on Indexed Debt Securities</td><td>(31)</td><td>35</td><td>(71)</td><td></td></tr><tr><td>Interest Expense to Subsidiaries</td><td>(26)</td><td>(25)</td><td>(25)</td><td></td></tr><tr><td>Interest Expense</td><td>(132)</td><td>(123)</td><td>(112)</td><td></td></tr><tr><td>Total</td><td>(189)</td><td>(106)</td><td>(192)</td><td></td></tr><tr><td>Loss Before Income Taxes, Equity in Subsidiaries and Extraordinary Item</td><td>(201)</td><td>(118)</td><td>(212)</td><td></td></tr><tr><td>Income Tax Benefit</td><td>79</td><td>50</td><td>87</td><td></td></tr><tr><td>Loss Before Equity in Subsidiaries and Extraordinary Item</td><td>(122)</td><td>(68)</td><td>(125)</td><td></td></tr><tr><td>Equity Income of Subsidiaries</td><td>564</td><td>838</td><td>542</td><td></td></tr><tr><td>Income Before Extraordinary Item</td><td>442</td><td>770</td><td>417</td><td></td></tr><tr><td>Extraordinary Item, Net of Tax</td><td>—</td><td>587</td><td>—</td><td></td></tr><tr><td>Net Income</td><td>$ 442</td><td>$ 1,357</td><td>$ 417</td><td></td></tr></table>

See Notes to Condensed Financial Information (Parent Company) and CenterPoint Energy, Inc. and Subsidiaries Notes to Consolidated Financial Statements in Part II, Item 8



## CENTERPOINT ENERGY, INC.

## SCHEDULE I — CONDENSED FINANCIAL INFORMATION OF CENTERPOINT ENERGY, INC. (PARENT COMPANY)

## STATEMENTS OF COMPREHENSIVE INCOME

<table><tr><td rowspan="3"></td><td colspan="5">Year Ended December 31,</td></tr><tr><td>2010</td><td colspan="2">2011</td><td colspan="2">2012</td></tr><tr><td colspan="5">(in millions)</td></tr><tr><td>Net income</td><td>$ 442</td><td>$ 1,357</td><td>$ 417</td><td></td><td></td></tr><tr><td>Other comprehensive income (loss):</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Adjustment to pension and other postretirement plans (net of tax of $5, $7 and $2)</td><td>6</td><td>(16)</td><td></td><td></td><td>(2)</td></tr><tr><td>Reclassification of deferred loss from cash flow hedges realized in net income (net of tax of $-0-, $-0- and $-0-)</td><td>1</td><td>—</td><td></td><td>—</td><td></td></tr><tr><td>Other comprehensive income (loss)</td><td>7</td><td>(16)</td><td></td><td></td><td>(2)</td></tr><tr><td>Comprehensive income</td><td>$ 449</td><td>$ 1,341</td><td>$ 415</td><td></td><td></td></tr></table>

See Notes to Condensed Financial Information (Parent Company) and CenterPoint Energy, Inc. and Subsidiaries Notes to Consolidated Financial Statements in Part II, Item 8



## CENTERPOINT ENERGY, INC.

## SCHEDULE I — CONDENSED FINANCIAL INFORMATION OF CENTERPOINT ENERGY, INC. (PARENT COMPANY)

## BALANCE SHEETS

<table><tr><td rowspan="3"></td><td colspan="3">December 31,</td></tr><tr><td>2011</td><td>2012</td><td></td></tr><tr><td colspan="3">(in millions)</td></tr><tr><td>ASSETS</td><td></td><td></td><td></td></tr><tr><td>Current Assets:</td><td></td><td></td><td></td></tr><tr><td>Cash and cash equivalents</td><td>$</td><td>—</td><td>$</td></tr><tr><td>Notes receivable — subsidiaries</td><td></td><td>407</td><td>805</td></tr><tr><td>Accounts receivable — subsidiaries</td><td></td><td>53</td><td>136</td></tr><tr><td>Other assets</td><td></td><td>43</td><td>50</td></tr><tr><td>Total current assets</td><td></td><td>503</td><td>991</td></tr><tr><td>Other Assets:</td><td></td><td></td><td></td></tr><tr><td>Investment in subsidiaries</td><td></td><td>7,538</td><td>6,387</td></tr><tr><td>Notes receivable — subsidiaries</td><td></td><td>151</td><td>151</td></tr><tr><td>Other assets</td><td></td><td>822</td><td>856</td></tr><tr><td>Total other assets</td><td></td><td>8,511</td><td>7,394</td></tr><tr><td>Total Assets</td><td>$</td><td>9,014</td><td>$</td></tr><tr><td>LIABILITIES AND SHAREHOLDERS&#x27; EQUITY</td><td></td><td></td><td></td></tr><tr><td>Current Liabilities:</td><td></td><td></td><td></td></tr><tr><td>Notes payable — subsidiaries</td><td>$</td><td>1,012</td><td>$</td></tr><tr><td>Current portion of indexed debt</td><td></td><td>131</td><td>138</td></tr><tr><td>Indexed debt securities derivative</td><td></td><td>197</td><td>268</td></tr><tr><td>Accounts payable — subsidiaries</td><td></td><td>24</td><td>73</td></tr><tr><td>Taxes accrued</td><td></td><td>426</td><td>497</td></tr><tr><td>Interest accrued</td><td></td><td>19</td><td>15</td></tr><tr><td>Other</td><td></td><td>1</td><td>1</td></tr><tr><td>Total current liabilities</td><td></td><td>1,810</td><td>1,426</td></tr><tr><td>Other Liabilities:</td><td></td><td></td><td></td></tr><tr><td>Accumulated deferred tax liabilities</td><td></td><td>202</td><td>214</td></tr><tr><td>Benefit obligations</td><td></td><td>569</td><td>608</td></tr><tr><td>Notes payable — subsidiaries</td><td></td><td>750</td><td>750</td></tr><tr><td>Total non-current liabilities</td><td></td><td>1,521</td><td>1,572</td></tr><tr><td>Long-Term Debt</td><td></td><td>1,461</td><td>1,086</td></tr><tr><td>Shareholders&#x27; Equity:</td><td></td><td></td><td></td></tr><tr><td>Common stock</td><td></td><td>4</td><td>4</td></tr><tr><td>Additional paid-in capital</td><td></td><td>4,120</td><td>4,130</td></tr><tr><td>Retained earnings</td><td></td><td>231</td><td>302</td></tr><tr><td>Accumulated other comprehensive loss</td><td></td><td>(133)</td><td>(135)</td></tr><tr><td>Total shareholders&#x27; equity</td><td></td><td>4,222</td><td>4,301</td></tr><tr><td>Total Liabilities and Shareholders&#x27; Equity</td><td>$</td><td>9,014</td><td>$</td></tr></table>

See Notes to Condensed Financial Information (Parent Company) and CenterPoint Energy, Inc. and Subsidiaries Notes to Consolidated Financial Statements in Part II, Item 8



## CENTERPOINT ENERGY, INC.

## SCHEDULE I—CONDENSED FINANCIAL INFORMATION OF CENTERPOINT ENERGY, INC. (PARENT COMPANY)

## STATEMENTS OF CASH FLOWS

<table><tr><td rowspan="3"></td><td colspan="4">For the Year Ended December 31,</td></tr><tr><td>2010</td><td colspan="2">2011</td><td>2012</td></tr><tr><td colspan="4">(in millions)</td></tr><tr><td>Operating Activities:</td><td></td><td></td><td></td><td></td></tr><tr><td>Net income</td><td>$ 442</td><td>$ 1,357</td><td>$ 417</td><td></td></tr><tr><td>Non-cash items included in net income:</td><td></td><td></td><td></td><td></td></tr><tr><td>Equity income of subsidiaries</td><td>(564)</td><td>(838)</td><td>(542)</td><td></td></tr><tr><td>Deferred income tax expense</td><td>(16)</td><td>149</td><td>113</td><td></td></tr><tr><td>Amortization of debt issuance costs</td><td>6</td><td>5</td><td>4</td><td></td></tr><tr><td>Extraordinary item, net of tax</td><td>—</td><td>(587)</td><td>—</td><td></td></tr><tr><td>Loss (gain) on indexed debt securities</td><td>31</td><td>(35)</td><td>71</td><td></td></tr><tr><td>Changes in working capital:</td><td></td><td></td><td></td><td></td></tr><tr><td>Accounts receivable/(payable) from subsidiaries, net</td><td>78</td><td>73</td><td>39</td><td></td></tr><tr><td>Accounts payable</td><td>(16)</td><td>(1)</td><td>—</td><td></td></tr><tr><td>Other current assets</td><td>(27)</td><td>1</td><td>26</td><td></td></tr><tr><td>Other current liabilities</td><td>(111)</td><td>50</td><td>(63)</td><td></td></tr><tr><td>Common stock dividends received from subsidiaries</td><td>9</td><td>10</td><td>1,700</td><td></td></tr><tr><td>Other</td><td>6</td><td>(62)</td><td>(72)</td><td></td></tr><tr><td>Net cash provided by (used in) operating activities</td><td>(162)</td><td>122</td><td>1,693</td><td></td></tr><tr><td>Investing Activities:</td><td></td><td></td><td></td><td></td></tr><tr><td>Short-term notes receivable from subsidiaries</td><td>(37)</td><td>123</td><td>(398)</td><td></td></tr><tr><td>Net cash provided by (used in) investing activities</td><td>(37)</td><td>123</td><td>(398)</td><td></td></tr><tr><td>Financing Activities:</td><td></td><td></td><td></td><td></td></tr><tr><td>Payments on long-term debt</td><td>(490)</td><td>(19)</td><td>(375)</td><td></td></tr><tr><td>Debt issuance costs</td><td>(2)</td><td>(7)</td><td>—</td><td></td></tr><tr><td>Common stock dividends paid</td><td>(319)</td><td>(337)</td><td>(346)</td><td></td></tr><tr><td>Proceeds from issuance of common stock, net</td><td>416</td><td>6</td><td>4</td><td></td></tr><tr><td>Short-term notes payable to subsidiaries</td><td>594</td><td>112</td><td>(578)</td><td></td></tr><tr><td>Net cash provided by (used in) financing activities</td><td>199</td><td>(245)</td><td>(1,295)</td><td></td></tr><tr><td>Net Decrease in Cash and Cash Equivalents</td><td>—</td><td>—</td><td>—</td><td></td></tr><tr><td>Cash and Cash Equivalents at Beginning of Year</td><td>—</td><td>—</td><td>—</td><td></td></tr><tr><td>Cash and Cash Equivaleats at End of Year</td><td>$ —</td><td>$ —</td><td>$ —</td><td></td></tr></table>

See Notes to Condensed Financial Information (Parent Company) and CenterPoint Energy, Inc. and Subsidiaries Notes to Consolidated Financial Statements in Part II, Item 8



# CENTERPOINT ENERGY, INC.
SCHEDULE I — NOTES TO CONDENSED FINANCIAL INFORMATION (PARENT COMPANY)

(1) Background. The condensed parent company financial statements and notes of CenterPoint Energy, Inc. (CenterPoint Energy) should be read in conjunction with the consolidated financial statements and notes of CenterPoint Energy, Inc. and subsidiaries appearing in the Annual Report on Form 10-K. Credit facilities at CenterPoint Energy Houston Electric, LLC (CenterPoint Houston) and CenterPoint Energy Resources Corp., indirect wholly owned subsidiaries of CenterPoint Energy, limit debt, excluding transition and system restoration bonds, as a percentage of their total capitalization to 65%. These covenants could restrict the ability of these subsidiaries to distribute dividends to CenterPoint Energy.

(2) New Accounting Pronouncements. In June 2011, the FASB issued new accounting guidance on the presentation of comprehensive income. The new guidance is intended to improve the overall quality of financial reporting by increasing the prominence of items reported in other comprehensive income and aligning the presentation of other comprehensive income in financial statements prepared in accordance with generally accepted accounting principles with those prepared in accordance with International Financial Reporting Standards. The new guidance requires an entity to present the total of comprehensive income, the components of net income, and the components of other comprehensive income either in a single continuous statement of comprehensive income or in two separate but consecutive statements. This new guidance is effective for fiscal years, and interim periods within those years, beginning after December 15, 2011. Adoption of this new guidance did not have an impact on CenterPoint Energy's financial position, results of operations or cash flows.

Management believes the impact of other recently issued standards, which are not yet effective, will not have a material impact on CenterPoint Energy’s financial position, results of operations or cash flows upon adoption.

(3) Long-term Debt. As of December 31, 2011 and 2012, CenterPoint Energy had no borrowings and approximately $16 million and $7 million, respectively, of outstanding letters of credit under its $1.2 billion credit facility. There was no commercial paper outstanding that would have been backstopped by CenterPoint Energy’s $1.2 billion credit facility as of December 31, 2011 and 2012. CenterPoint Energy was in compliance with all debt covenants as of December 31, 2012.

CenterPoint Energy’s $1.2 billion credit facility, which is scheduled to terminate September 9, 2016, can be drawn at the London Interbank Offered Rate (LIBOR) plus 150 basis points based on CenterPoint Energy’s current credit ratings. The facility contains a debt (excluding transition and system restoration bonds) to earnings before interest, taxes, depreciation and amortization (EBITDA) covenant (as those terms are defined in the facility). The facility allows for a temporary increase of the permitted ratio in the financial covenant from 5 times to 5.5 times if CenterPoint Houston experiences damage from a natural disaster in its service territory and CenterPoint Energy certifies to the administrative agent that CenterPoint Houston has incurred system restoration costs reasonably likely to exceed $100 million in a consecutive twelve-month period, all or part of which CenterPoint Houston intends to seek to recover through securitization financing. Such temporary increase in the financial ratio covenant would be in effect from the date CenterPoint Energy delivers its certification until the earliest to occur of (i) the completion of the securitization financing, (ii) the first anniversary of CenterPoint Energy’s certification or (iii) the revocation of such certification.

CenterPoint Energy’s maturities of long-term debt, excluding the indexed debt securities obligation, are $420 million in 2015 and $250 million in 2017. There are no maturities of long-term debt in 2013, 2014 or 2016.

(4) Guaranties. In September 2009 and April 2010, CenterPoint Energy Field Services, LLC (CEFS), an indirect wholly owned subsidiary of CenterPoint Energy, entered into long-term agreements with an indirect wholly owned subsidiary of Encana Corporation (Encana) and an indirect wholly owned subsidiary of Royal Dutch Shell plc (Shell) to provide gathering and treating services for their natural gas production from certain Haynesville Shale and Bossier Shale formations in Texas and Louisiana. CEFS also acquired jointly-owned gathering facilities from Encana and Shell. Each of the agreements includes acreage dedication and volume commitments for which CEFS has rights to gather Shell’s and Encana’s natural gas production from the dedicated areas.

In connection with the agreements, CEFS commenced gathering and treating services utilizing the acquired facilities. CEFS has expanded the acquired facilities. If Encana or Shell elect, CEFS will further expand the facilities in order to gather and treat additional future volumes. CenterPoint Energy has guaranteed to fund CEFS' obligations up to $100 million, plus any additional amount related to any expansion or additional services, upon completion of the gathering systems. As of December 31, 2012, CenterPoint Energy had guaranteed CEFS's obligations up to an amount of $100 million under these agreements.



## CENTERPOINT ENERGY, INC.

## SCHEDULE II — VALUATION AND QUALIFYING ACCOUNTS
For the Three Years Ended December 31, 2012

<table><tr><td>Column A</td><td>Column B</td><td colspan="2">Column C</td><td>Column D</td><td>Column E</td></tr><tr><td></td><td></td><td colspan="2">Additions</td><td></td><td></td></tr><tr><td></td><td>Balance at Beginning of Period</td><td>Charged to Income</td><td>Charged to Other Accounts</td><td>Deductions From Reserves (1)</td><td>Balance at End of Period</td></tr><tr><td>Description</td><td></td><td></td><td>(in millions)</td><td></td><td></td></tr><tr><td>Year Ended December 31, 2012</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Accumulated provisions:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Uncollectible accounts receivable ........</td><td>$ 25</td><td>$ 16</td><td>$ 1</td><td>$ 17</td><td>$ 25</td></tr><tr><td>Deferred tax asset valuation allowance ...</td><td>4</td><td>(1)</td><td>(1)</td><td>—</td><td>2</td></tr><tr><td>Year Ended December 31, 2011</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Accumulated provisions:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Uncollectible accounts receivable ........</td><td>$ 25</td><td>$ 26</td><td>$ —</td><td>$ 26</td><td>$ 25</td></tr><tr><td>Deferred tax asset valuation allowance ...</td><td>3</td><td>—</td><td>1</td><td>—</td><td>4</td></tr><tr><td>Year Ended December 31, 2010</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Accumulated provisions:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Uncollectible accounts receivable ........</td><td>$ 24</td><td>$ 30</td><td>$ —</td><td>$ 29</td><td>$ 25</td></tr><tr><td>Deferred tax asset valuation allowance ...</td><td>5</td><td>(2)</td><td>—</td><td>—</td><td>3</td></tr></table>

(1) Deductions from reserves represent losses or expenses for which the respective reserves were created. In the case of the uncollectible accounts reserve, such deductions are net of recoveries of amounts previously written off.



## SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Houston, the State of Texas, on the 27th day of February, 2013.

CENTERPOINT ENERGY, INC.

(Registrant)

By: /s/ David M. McClanahan

David M. McClanahan

President and Chief Executive Officer

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the registrant and in the capacities indicated on February 27, 2013.

<table><tr><td>Signature</td><td>Title</td></tr><tr><td>/s/ DAVID M. MCCLANAHAN</td><td>President, Chief Executive Officer and Director (Principal Executive Officer and Director)</td></tr><tr><td>David M. McClanahan</td><td></td></tr><tr><td>/s/ GARY L. WHITLOCK</td><td>Executive Vice President and Chief Financial Officer (Principal Financial Officer)</td></tr><tr><td>Gary L. Whitlock</td><td></td></tr><tr><td>/s/ WALTER L. FITZGERALD</td><td>Senior Vice President and Chief Accounting Officer (Principal Accounting Officer)</td></tr><tr><td>Walter L. Fitzgerald</td><td></td></tr><tr><td>/s/ MILTON CARROLL</td><td>Chairman of the Board of Directors</td></tr><tr><td>Milton Carroll</td><td></td></tr><tr><td>/s/ DONALD R. CAMPBELL</td><td>Director</td></tr><tr><td>Donald R. Campbell</td><td></td></tr><tr><td>/s/ O. HOLCOMBE CROSSWELL</td><td>Director</td></tr><tr><td>O. Holcombe Crosswell</td><td></td></tr><tr><td>/s/ MICHAEL P. JOHNSON</td><td>Director</td></tr><tr><td>Michael P. Johnson</td><td></td></tr><tr><td>/s/ JANIECE M. LONGORIA</td><td>Director</td></tr><tr><td>Janiece M. Longoria</td><td></td></tr><tr><td>/s/ SUSAN O. RHENEY</td><td>Director</td></tr><tr><td>Susan O. Rheney</td><td></td></tr><tr><td>/s/ R. A. WALKER</td><td>Director</td></tr><tr><td>R. A. Walker</td><td></td></tr><tr><td>/s/ PETER S. WAREING</td><td>Director</td></tr><tr><td>Peter S. Wareing</td><td></td></tr><tr><td>/s/ SHERMAN M. WOLFF</td><td>Director</td></tr><tr><td>Sherman M. Wolff</td><td></td></tr></table>



## CENTERPOINT ENERGY, INC. AND SUBSIDIARIES

## COMPUTATION OF RATIOS OF EARNINGS TO FIXED CHARGES
(Millions of Dollars)

<table><tr><td></td><td>2008 (1)</td><td>2009 (1)</td><td>2010 (1)</td><td>2011 (1)</td><td>2012 (1)</td></tr><tr><td>Income before extraordinary item</td><td>$ 446</td><td>$ 372</td><td>$ 442</td><td>$ 770</td><td>$ 417</td></tr><tr><td>Equity in earnings of unconsolidated affiliates, net of distributions</td><td>(51)</td><td>(3)</td><td>13</td><td>8</td><td>8</td></tr><tr><td>Income taxes</td><td>277</td><td>176</td><td>263</td><td>404</td><td>341</td></tr><tr><td>Capitalized interest</td><td>(12)</td><td>(4)</td><td>(9)</td><td>(4)</td><td>(9)</td></tr><tr><td></td><td>660</td><td>541</td><td>709</td><td>1,178</td><td>757</td></tr><tr><td>Fixed charges, as defined:</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Interest</td><td>604</td><td>644</td><td>621</td><td>583</td><td>569</td></tr><tr><td>Capitalized interest</td><td>12</td><td>4</td><td>9</td><td>4</td><td>9</td></tr><tr><td>Interest component of rentals charged to operating expense</td><td>15</td><td>12</td><td>26</td><td>14</td><td>9</td></tr><tr><td>Total fixed charges</td><td>631</td><td>660</td><td>656</td><td>601</td><td>587</td></tr><tr><td>Earnings, as defined</td><td>$ 1,291</td><td>$ 1,201</td><td>$ 1,365</td><td>$ 1,779</td><td>$ 1,344</td></tr><tr><td>Ratio of earnings to fixed charges</td><td>2.05</td><td>1.82</td><td>2.08</td><td>2.96</td><td>2.29</td></tr></table>

(1) Excluded from the computation of fixed charges for the years ended December 31, 2008, 2009, 2010, 2011, and 2012 is interest expense of $9 million, interest income of $3 million, interest expense of $9 million, interest income of $12 million and interest income of $11 million respectively, which is included in income tax expense.



## Investor Information

## Annual Meeting

The 2013 Annual Meeting of Shareholders will be held on Thursday, April 25, at 9 a.m. CDT in the CenterPoint Energy Tower auditorium, 1111 Louisiana Street, Houston, Texas. Shareholders who hold shares of CenterPoint Energy at the close of business on February 25, 2013, will receive notice of the meeting and will be eligible to vote.

## Investor Services

If you have questions about your CenterPoint Energy investor account, please contact us:

In Houston: (713) 207-3060
Toll Free: (800) 231-6406
Fax: (713) 207-3169

Investor services, online tools and a list of publications may be found on the company’s website at CenterPointEnergy.com/investors.

Investor Services representatives are available from 8 a.m. to 5 p.m. Central time, Monday through Friday, to help you with questions about CenterPoint Energy common stock or enrollment in the CenterPoint Energy Investor’s Choice Plan.

The Investor’s Choice Plan provides easy, inexpensive investment options, including direct purchase and sale of CenterPoint Energy common stock; dividend reinvestment; statement-based accounting and monthly or quarterly automatic investing by electronic transfer. You can become a registered CenterPoint Energy shareholder by making an initial investment of at least $250 through Investor’s Choice.

CenterPoint Energy Investor Services serves as transfer agent, registrar and dividend disbursing agent for CenterPoint Energy common stock.

## Information Requests

Call (888) 468-3020 toll free for additional copies of: 2012 Annual Report and Form 10-K 2013 Proxy Statement

This annual report is printed on environmentally responsible paper, which is FSC \( ^{®} \) -certified (portions of which are 100% post-consumer recycled paper).

DESIGN: SAVAGE BRANDS, HOUSTON, TX



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## Dividend Payments

Common stock dividends are generally paid quarterly in March, June, September and December. Dividends are subject to declaration by the Board of Directors, who establish the amount of each quarterly common stock dividend and fix record and payment dates.

## Institutional Investors

Security analysts and other investment professionals should contact Carla Kneipp, Vice President of Investor Relations at (713) 207-6500.

## Stock Listing

CenterPoint Energy, Inc. common stock is traded under the symbol CNP on the New York and Chicago stock exchanges.

## Auditors

Independent Registered Public Accounting Firm
Deloitte & Touche LLP, Houston, Texas

Corporate Office, Street Address

CenterPoint Energy, Inc.
1111 Louisiana Street
Houston, Texas 77002

Mailing Address
P.O. Box 4567 Houston, Texas 77210-4567
Telephone: (713) 207-1111

Website Address
CenterPointEnergy.com