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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549





Form 10-K/A





(Amendment
No. 1)



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

For the fiscal year ended December 31, 2011



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

For the transition period from      to     .

Commission file No. 001-14768





NSTAR





(Exact name of registrant as specified in its charter)



|                                                              |  |                                    
|------------------------------------------------------------- |  | -----------------------------------
|Massachusetts                                                 |  | 04-3466300                         
|(State or other jurisdiction ofincorporation or organization) |  | (I.R.S. EmployerIdentification No.)
|                                                              | 
|800 Boylston Street,Boston, Massachusetts                     |  | 02199                              
|(Address of principal executive offices)                      |  | (Zip Code)                         

617-424-2000

(Registrants telephone number, including area code:)

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



|                                         |  |                                     
|---------------------------------------- |  | ------------------------------------
|Title of Each Class                      |  | Name of Exchange on Which
Registered
|Common Shares, par value $1.00 per share |  | New York Stock Exchange             

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

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

Indicate by check mark whether the registrant (1) has filed all reports 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 þ    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 during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such
files).    Yesþ    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 the definitions of large accelerated filer, accelerated filer and smaller reporting company in Rule 12b-2 of the Exchange Act.



|                         |  |                    |  |                                                                      |  |                           
|------------------------ |  | ------------------ |  | -------------------------------------------------------------------- |  | --------------------------
|Large acceleratedfiler þ |  | Acceleratedfiler  ̈ |  | Non-accelerated filer  ̈ (Do not checkif a smaller reporting company) |  | Smaller reportingcompany  ̈



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

The aggregate market value of the 103,586,727 shares of voting stock of the registrant held by non-affiliates of the registrant, computed as the average of the high and low market prices of the common
shares as reported on the New York Stock Exchange consolidated transaction reporting system for NSTAR Common Shares as of the last business day of the registrants most recently completed second fiscal quarter: $4,765,507,375.

Indicate the number of shares outstanding of each of the registrants classes of common stock, as of the latest practicable date.



|                                         |  |                             
|---------------------------------------- |  | ----------------------------
|Class                                    |  | Outstanding at April 9, 2012
|Common Shares, par value $1.00 per share |  | 103,586,727                 

Documents Incorporated by Reference: None.









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EXPLANATORY NOTE

This Amendment No. 1 on Form 10-K/A (this Amendment) amends NSTARs Annual Report on Form 10-K for the fiscal year
ended December 31, 2011 filed with the Securities and Exchange Commission on February 6, 2012. The purpose of this Form 10-K/A is to disclose the information required in Part III, Items 10 through 14, of the Form 10-K. Accordingly, the
Company hereby amends and replaces in their entirety Items 10 through 14 of the Form 10-K. Except as described above, this amendment does not amend, update or change any other items of the Companys originally filed 2011 Annual Report on Form
10-K.

TABLE OF CONTENTS

PART III



|                                                                                                          |  |  |    | 
|--------------------------------------------------------------------------------------------------------- |  |  | -- | 
|Item 10  Trustees, Executive Officers and Corporate Governance                                           |  |  | 4  | 
|Item 11  Executive and Trustee Compensation                                                              |  |  | 7  | 
|Item 
12  Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters |  |  | 27 | 
|Item 13  Certain Relationships and Related Transactions and Trustee
Independence                         |  |  | 28 | 
|Item 14  Principal Accounting Fees and Services                                                          |  |  | 29 | 

PART IV



|                                                     |  |  |    | 
|---------------------------------------------------- |  |  | -- | 
|Item 15  Exhibits and Financial Statement Schedules |  |  | 29 | 

Signatures

Exhibit 31.1 Section 302 CEO Certification

Exhibit 31.2 Section 302 CFO Certification



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PART III

Item 10  Trustees, Executive Officers and Corporate Governance

Trustees

The Board is divided into three classes serving staggered three-year
terms. Trustees for each class are elected at the Annual Meeting of Shareholders held in the year in which the term for their class expires. The terms of the Trustees will expire at the respective Annual Meeting or until their respective successors
are elected and qualified, or until their earlier death, resignation, or removal. There are no family relationships among the Companys executive officers and Trustees.

The biography for each trustee sets forth the trustees name, age, principal occupation and directorships during the past five years and the year in which the trustee first became a trustee of the
Company, and includes the specific experience, qualifications, attributes and skills that led the Board to conclude that the trustee should serve as a Trustee. The Board believes that each of the Trustees has valuable individual skills and
experiences that, taken together, provide the Company with the variety and depth of knowledge, judgment and vision necessary to provide effective oversight of the Company.

Class I Trustees, Terms Expire in 2012



|                                                  |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|------------------------------------------------- |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|Trustees                                          |  | Principal Occupation, Directorships and Qualifications                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
|                                                  | 
|Thomas G. Dignan, Jr.
Age: 71 Trustee since: 1999 |  | Partner, Ropes & Gray, LLP (Law firm) (1964-2000; retired 2000). Mr. Dignan practiced as an attorney and partner at one of Bostons largest and most respected law firms, where he represented companies in many regulated industries, including utilities. Mr.
Dignans legal experience is an important resource to the Board of a highly regulated company. Mr. Dignans legal background also provides him with insight into the requirements and governance environment of a publicly-traded
company.                                                                                                                                                                                                                
|                                                  | 
|Matina S. Horner
Age: 72 Trustee since: 1999      |  | Executive Vice President, Teachers Insurance and Annuity Association/College Retirement Equities Fund (Financial services)
(1989-2003; retired 2003); Trustee, BlackRock Equity Liquidity Funds (2005-Present). Dr. Horners service as executive vice president of
TIAA-CREF provides the Board with her unique perspective on shareholder-related issues and employment-related matters. Dr. Horner also brings valuable experience from her 17 years as President of Radcliffe College and from her service as chair of
the Board and Trustee of several charitable organizations in Boston and New York.                                                                                                              
|                                                  | 
|Gerald L. Wilson
Age: 72 Trustee since: 1999      |  | Emeritus Professor of Electrical and Mechanical Engineering; Massachusetts Institute of Technology (2009-Present); Vannevar Bush
Professor of Engineering, Massachusetts Institute of Technology (1983-2009; retired 2009); Director, Analogic Corp. (1980-2012), Massachusetts Technology Collaborative (2009-Present) and Evergreen Solar, Inc. (2005-2008).
As a Professor of Electrical and Mechanical Engineering and the former Dean of the School of Engineering at the Massachusetts Institute of Technology, Dr.
Wilson brings unique insight to the Board on engineering and system electric operations matters. He also provides his extensive experience gained from service on several public company boards.
|                                                  | 
|Frederica M. Williams
Age: 53 Trustee since: 2012 |  | President and Chief Executive Officer, Whittier Health Street Center (2002-Present).
As the President and CEO of Whittier Street Health Center, Ms. Williams has transformed a basic community health center into one of Bostons premier
healthcare facilities. Her commitment to improving the lives of low income residents of Boston and demonstrated business leadership provide the Board with important skills and perspective. She also possesses extensive experience and skills in the
important areas of finance and accounting, audit and risk assessment. Ms. Williams substantial service on numerous non-profit boards also provides an important connection to the NSTAR customer community.             



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Class II Trustees, Terms Expire in 2013



|                                               |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|---------------------------------------------- |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|                                               |  | Principal Occupation, Directorships and Qualifications                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
|                                               | 
|Gary L. Countryman
Age: 72 Trustee since: 1999 |  | Chairman Emeritus and a Director, Liberty Mutual Holding Company, Inc. (Insurance) (2002-Present); Director, CBS Corporation
(2007-Present) and Bank of America Corporation (2004-2009). As the former chief executive of Liberty Mutual Insurance Company, Mr. Countryman
has valuable risk management experience in a regulated industry. Mr. Countryman also brings extensive executive and management leadership skills and experience as a director of several public companies to his service on the
Board.                                                                                                                                                                                                     
|                                               | 
|James S. DiStasio
Age: 64 Trustee since: 2009  |  | Senior Vice Chairman and Americas Chief Operating Officer, Ernst & Young (Registered public accounting firm) (2003-2007; retired
2007); Director, EMC Corporation (2010-Present). Mr. DiStasio served as a senior executive at one of the largest registered public accounting
firms in the world and has an extensive background in public accounting. In his position of Senior Vice Chairman and Americas Chief Operating Officer, Mr. DiStasio acquired important management and leadership skills that provide additional value and
support to the Board. Mr. DiStasios service as a director of numerous civic and charitable organizations in the Boston area provides an additional and valuable perspective.
|                                               | 
|Thomas J. May
Age: 64 Trustee since: 1999      |  | Chairman, President (Since 2002), Chief Executive Officer and a Trustee, NSTAR (1999-Present); Director, Bank of America Corporation
(2004-Present) and Liberty Mutual Holding Company, Inc. (2002-Present). Mr. May is the Chief Executive Officer and Chairman of the Board of
Trustees of the Company. His extensive experience in the energy industry and diverse financial, operations and management skills provide the necessary background to lead the Company. Mr. May represents management on the Board as the sole management,
non-independent trustee.                                                                                                                                                   



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Class III Trustees, Terms Expire in 2014



|                                                  |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
|------------------------------------------------- |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|Trustees                                          |  | Principal Occupation, Directorships and Qualifications                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
|                                                  | 
|Charles K. Gifford
Age: 69 Trustee since: 1999    |  | Chairman Emeritus (2005-Present) and a Director (2004-Present), Bank of America Corporation (Bank holding company) (retired as
Chairman 2005); Director, CBS Corporation (2006-Present). Mr. Gifford, through a career overseeing large complex financial institutions in the
banking industry, brings important business and financial expertise to the Board in its deliberations on complex transactions and other financial matters. In addition, his breadth of director experience, which includes his service on executive,
executive personnel, credit, governance and nominating, and audit committees, as well as his service as Lead Trustee of NSTAR, provides valuable contributions to the Board in implementing good corporate governance.                                                                   
|                                                  | 
|Paul A. La Camera
Age: 69 Trustee since: 1999     |  | University Administrator (2011-Present), WBUR Boston (Broadcasting) (2006-2010) (retired as General Manager 2010); formerly President
and General Manager (1993-2005), WCVB-TV Channel 5 Boston. Mr. La Camera is an active and respected member of the Metropolitan Boston
community, having served for more than 30 years as an executive in the local television and radio broadcast industry. In addition to the important perspective that his career in broadcast journalism provides, Mr. La Camera brings extensive
organizational and leadership skills to the Board, along with his link to the NSTAR customer community through his substantial non-profit board service.                                                                                                                                        
|                                                  | 
|William C. Van Faasen
Age: 63 Trustee since: 2002 |  | Chairman (2010-Present and 2005-2007), President (2010), Blue Cross Blue Shield of Massachusetts Inc. (Health care); Director,
Liberty Mutual Holding Company, Inc. (2002-Present), IMS Health, Inc. (1996-2010) and PolyMedica Corporation (2005-2008). Mr. Van Faasen served
as the Chairman and CEO of Massachusetts largest health care management company, Blue Cross Blue Shield of Massachusetts and in 2010 was elected Chairman also serving as interim CEO and President from March  August 2010 when he was
elected Chairman. He brings to the Board extensive management, leadership, and financial experience as a result of leading a large company in a regulated industry. He also brings in-depth experience and insight as a director of several public
companies, including service as a lead director.

Executive Officers



|                         |  |                                                                                                    |  |                         |    |  |                            |  |    |                     |  |  |    | 
|------------------------ |  | -------------------------------------------------------------------------------------------------- |  | ----------------------- | -- |  | -------------------------- |  | -- | ------------------- |  |  | -- | 
|Name of Officer          |  | Position and Business Experience                                                                   |  | Years inCurrentPosition |    |  | Yearsas anExecutiveOfficer |  |    | Age atMarch 1, 2012 | 
|Thomas J. May            |  | Chairman, President, Chief Executive Officer and a Trustee                                         |  |                         | 17 |  |                            |  | 25 |                     |  |  | 64 | 
|James J. Judge           |  | Senior Vice President and Chief Financial Officer                                                  |  |                         | 16 |  |                            |  | 16 |                     |  |  | 56 | 
|Douglas S. Horan         |  | Senior Vice President  Strategy, Law & Policy, Secretary and General Counsel                      |  |                         | 14 |  |                            |  | 16 |                     |  |  | 62 | 
|Werner J. Schweiger      |  | Senior Vice President  Operations                                                                 |  |                         | 10 |  |                            |  | 10 |                     |  |  | 52 | 
|Joseph R. Nolan, Jr.     |  | Senior Vice President  Customer & Corporate Relations                                             |  |                         | 11 |  |                            |  | 11 |                     |  |  | 49 | 
|Christine M. Carmody (a) |  | Senior Vice President  Human Resources; previously Vice President of Organizational Effectiveness |  |                         | 4  |  |                            |  | 4  |                     |  |  | 49 | 
|Robert J. Weafer, Jr.    |  | Vice President, Controller and Chief Accounting Officer                                            |  |                         | 23 |  |                            |  | 23 |                     |  |  | 65 | 

(a) Ms. Carmody was elected Senior Vice President  Human Resources in August 2008. She served as Vice
President  Organizational Effectiveness from July 2006 to August 2008.



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Corporate Governance

Audit, Finance and Risk Management Committee. The Audit, Finance and Risk Management Committee is comprised of Dr. Matina S. Horner, Chair and Mr. James S. DiStasio,
Mr. Paul A. La Camera, Mr. William C. Van Faasen and Dr. Gerald L. Wilson. The Board of Trustees has made a determination that Mr. DiStasio is the Committees audit committee financial expert, as
that term is defined in the SECs regulations and that each of the members meets the applicable SEC and NYSE independence and knowledge standards. The Committee met five times in 2011.

NSTAR Policies on Business Ethics and Conduct. The NSTAR Board of Trustees Guidelines on Significant Corporate Governance Issues, NSTARs Code of Ethics for the Principal Executive
Officer, General Counsel and Senior Financial Officers, and NSTARs Code of Ethics and Business Conduct for Trustees, Officers and Employees (Code of Conduct), together with other relevant governance documents that are applicable to
NSTARs executive officers, senior financial officers or Trustees can be accessed free of charge on NSTARs website at www.nstar.com: select Investor Relations, Company Information and then Corporate
Governance, or in print to any Shareholder who requests them from the Companys Secretary.

Item 11  Executive and Trustee Compensation

Compensation Discussion and Analysis

Overview

The Role of the Executive Personnel Committee. The Board of Trustees has delegated to its Executive Personnel Committee (the
Committee) overall responsibility for establishing the compensation program for all executive officers, including the Named Executive Officers. In this role, the Committee sets compensation policy and compensation levels, reviews and
approves performance goals and evaluates executive performance. Although this discussion and analysis refers principally to compensation for the Named Executive Officers, the same compensation principles and practices generally apply to all
executive officers. The compensation of the Chief Executive Officer is subject to further review and the approval of the independent Board members.

Elements of Compensation. Total direct compensation is delivered primarily through a combination of three elements: base salary, annual cash incentive awards and long term
equity-based incentive awards. Compensation is also provided through certain retirement, perquisite, severance, and health and welfare benefit programs. The Committee believes that a significant portion of total compensation should be
incentive-based, and therefore the Companys incentive and share-based plans have been designed to provide for targeted levels of approximately 80% of Mr. Mays total compensation and approximately 60% to 70% of total compensation for
the other Named Executive Officers.

Compensation Objectives. The objectives of the Companys compensation program
for executive officers are to attract and retain highly-qualified executives, to reward the achievement of short and long term performance objectives, and to provide total compensation to executives that is competitive with market conditions. The
NSTAR compensation program utilizes performance-based compensation programs to reward individual and corporate performance and to link interests of executives with the Companys Shareholders.

Setting Compensation Levels. Individual and Company performance are the most significant factors used in determining executive
compensation. The Committee has therefore structured the Companys annual cash incentive and long term equity-based incentive compensation programs to motivate executives to achieve the Companys business goals and to reward executives for
favorable Company performance measured against these and other factors. In order to ensure that the Company also achieves its goal of providing market-based compensation levels to attract and retain top quality management, the Committee benchmarks
total compensation against a group of urban utility companies. The Company and Pay Governance LLC (that now serves as the Committees compensation consultant) work together to identify



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the companies comprising the urban utility benchmark group. The urban utility group and the companies comprising it are reviewed by the Committee annually and are generally stable from year to
year, with any changes resulting mostly from mergers or acquisitions of companies within the group. As a secondary point of reference, the Committee reviews compensation data pertaining to general industry companies with revenues between $2 billion
and $5 billion derived from the Pay Governance LLC database.

The urban utility group used to benchmark the Companys compensation
program is comprised of 24 energy companies operating primarily in major urban areas. For 2011, this peer group of companies consisted of:



|                                |  |                          |  |                                     
|------------------------------- |  | ------------------------ |  | ------------------------------------
|AGL Resources Inc.              |  | EQT Corporation          |  | Pinnacle West Capital Group         
|Ameren Corporation              |  | Exelon Corporation       |  | Portland General Electric Company   
|CenterPoint Energy Inc.         |  | FirstEnergy Corporation  |  | Public Service Enterprise Group Inc.
|Consolidated Edison, Inc.       |  | Great Plains Energy Inc. |  | Puget Energy Inc.                   
|Constellation Energy Group Inc. |  | NextEra Energy, Inc.     |  | TECO Energy Inc                     
|DPL Inc.                        |  | Northeast Utilities      |  | WGL Holdings Inc                    
|DTE Energy Company              |  | NV Energy Inc.           |  | Wisconsin Energy Corporation        
|Duke Energy Corporation         |  | Pepco Holdings Inc.      |  | Xcel Energy Inc.                    

The Committees compensation philosophy is to target total compensation at the 50th percentile of the urban utility
group, with the ability to earn higher levels of compensation depending on corporate and individual performance. The data for the urban utility group and the similar-sized general industry companies is reviewed at both the 50th and 75th percentiles
in order to assess the competitiveness of the compensation programs within the marketplace for executive talent. In addition to benchmarking total compensation, the data is also used as a reference point to determine the mix of cash and equity
compensation. Pay Governance LLC developed the benchmark and comparative compensation data described above and periodically reviews the Companys executive compensation levels, the role and responsibilities of each executive, and the
Companys organizational structure. The Companys internal pay relationship is derived from the data in the Pay Governance LLC studies and an internal assessment of the relative value of the executive positions. At the January meeting of
the Committee, Pay Governance LLC presents a report that reviews NSTARs executive compensation levels relative to the 50th and 75th percentiles of the urban utility group. Data with respect to the general industry companies is also provided.

At NSTARs 2011 Annual Meeting of Shareholders, 90% of the shares voted were in favor of the compensation of NSTARs Named
Executive Officers. The Committee believes that the vote confirms its view that NSTARs compensation programs are performance-based and consistent with sound executive compensation policy. The Committee will consider the outcome of the
shareholder advisory vote on executive compensation each year as it makes future compensation decisions.

In addition, over 83% of the shares
voted were in favor of holding the advisory vote on executive compensation on an annual basis, as was recommended by the Board of Trustees. The Board subsequently determined that it would follow the Shareholders recommendation and hold the
advisory vote on executive compensation at each Annual Meeting of Shareholders.

Analysis of Results for 2011

The Companys overall financial and operational performance was outstanding in 2011, exceeding its Operating Plan. This exceptionally strong
performance was evidenced by the following:



| |  |  | The Company exceeded its earnings target, reporting total earnings per share of $2.65 and adjusted earnings of $2.59 per share;
| | - |  | -------------------------------------------------------------------------------------------------------------------------------



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| |  |  | For the fifteenth consecutive year, NSTAR achieved a positive total shareholder return and also outperformed the Edison Electric Utility Index and the
S&P 500 over the 5, 10 and 15 year time periods;
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | The Companys A+ credit rating was the highest in the utility industry, as reported by Edison Electric Institute;
| | - |  | -------------------------------------------------------------------------------------------------------------------



| |  |  | Overall Company electric system achieved top quartile performance against its peers;
| | - |  | ------------------------------------------------------------------------------------



| |  |  | The Company worked effectively within an evolving regulatory environment to execute three cost effective long-term renewable energy contracts;
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Customer service results were outstanding, also within the first quartile compared to the Companys peers;
| | - |  | ----------------------------------------------------------------------------------------------------------



| |  |  | NSTAR Gas was ranked first for customer satisfaction within its segment in the East Region.
| | - |  | -------------------------------------------------------------------------------------------

Achievement of the 2011 performance goals and the Committees assessment of corporate and executive performance are fully described in the section
of this report entitled Annual Incentive Compensation. Specific decisions regarding each of the elements of compensation, based upon the Committees assessment of Company and executive performance and the market data described in
this Compensation Discussion and Analysis, are set forth below.

Base Salary

2011 Base Salary.A portion of each executives compensation is base salary. In establishing base salary levels, the Committees considerations are to establish base salary at a
competitive level which the Committee believes is necessary to attract and retain highly qualified individuals and to consider Company and executive financial and operating performance. The Committee and the independent Board members apply the same
considerations in determining the level of base salary for the Chief Executive Officer, in addition to considering the competitive executive compensation review of Pay Governance LLC. With respect to the other senior executives, including the Named
Executive Officers, the Committee also considers the recommendations of the Chief Executive Officer.

The base salaries of each of the Named
Executive Officers that were approved by the Committee in 2011 approximate the 50th percentile of the base salaries of the urban utility group, which is the level determined by the Committee, based on the Pay Governance LLC studies, to be
competitively necessary to attract and retain qualified individuals. Considering his performance and taking into consideration the appropriate allocation of base pay and performance-based incentive compensation, the Committee and the independent
Board members set Mr. Mays base salary at $1,105,000, effective May 1, 2011.

Annual Incentive Compensation

Performance Assessment Process. The Committee established several corporate performance goals in January 2011, based on the Operating Plan approved
by the Board of Trustees. These included goals with quantitative targets and others that do not lend themselves to specific metrics, but which relate to critical initiatives which were seen by the Committee to be of significant importance.
Performance goals related to earnings per share, credit ratings, system reliability operating performance, customer service quality and safety include quantifiable targets. These targets are set forth in the section entitled Performance
Assessment Results. The goals related to regulatory, environmental and energy supply matters are not as quantitative, and are based on the Committees judgment of how well the Company and the executive should perform. All of the goals for
2011 are described below. At the end of the year, management prepared a comprehensive review of the Companys performance for the year. Based on that analysis, the



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Chief Executive Officer recommended to the Committee payouts for each executive based on the Companys overall corporate performance and achievement of the performance goals, along with his
assessment of the executives individual and team performance. In making incentive awards, the Committee did not use pre-determined or quantifiable formulas based on the degree of achievement of performance metrics. The Committee uses its
discretion to consider many factors, including the difficulty of achieving such goals and the executives individual contribution to their successful achievement. The Committee also may exercise discretion in making an award absent the
attainment of a performance goal, as many of the goals are interdependent and are considered both individually and in relation to each other. The Committee established Annual Incentive Plan target award levels for each executive in January 2011
based on the benchmarked group and market data described above. The target award levels are expressed as a percentage of each Named Executive Officers base salary. For each of the Named Executive Officers in 2011, target award levels ranged
from 45% to 100% of base salary. Depending on individual performance, awards may be made within a range of 0% to 200% of target. The maximum award is 200% of base salary. The Chief Executive Officers annual target award level was set at 100%
of base pay for 2011.

Performance Assessment Results. At its January 23, 2012 meeting, the Committee reviewed all of the
financial and operational performance goals established at the beginning of 2011. The Committees consideration of each of these goals is described below.

Financial Goals



| |  |  | The Company successfully executed its Operating and Capital Plans and achieved increased earnings, reporting earnings of $2.65, (which excludes
merger-related costs), which exceeded the Companys earnings per share target of $2.64;
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | The Company achieved a positive total return to Shareholders for the fifteenth consecutive year, being the only company in any industry to do so.
Cumulative total shareholder returns for the past one, five, ten and fifteen year periods totaled 16.2%, 68.9%, 222.7%, and 597.0%, respectively, considerably outperforming the industry and the market over the longer term time periods;
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | The Companys pension plan asset investment performance was slightly below the median return for large corporate plans; and
| | - |  | ---------------------------------------------------------------------------------------------------------------------------



| |  |  | The Companys A+ credit rating in 2011 at Standard and Poors was the highest of any investor-owned utility, as reported by EEI
and was well in excess of the average credit rating of BBB for the industry. This strong financial condition met the target and allowed the Company to achieve an average borrowing rate of 15 basis points.
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Operational Goals



| |  |  | The Company met all state regulatory requirements with regard to system reliability and exceeded the targets established by the Committee at the
beginning of the year:
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | average months between service interruptions equaled 15.8 months, exceeding the target of 13.8 months;
| | - |  | ------------------------------------------------------------------------------------------------------



| |  |  | 99.4% of the time the Company responded to gas customer emergency calls within 60 minutes, exceeding the target of 99.3%; and
| | - |  | -----------------------------------------------------------------------------------------------------------------------------



| |  |  | electric service outage restoration time of 77.4 minutes was significantly better than the target of 97 minutes.
| | - |  | ----------------------------------------------------------------------------------------------------------------



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| |  |  | The Company achieved significant improvements in safety performance, reducing lost time injuries by 33%, though not meeting its aggressive 2011 safety
targets, as 26 lost time injuries were recorded compared to a target of 23.
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Regarding customer service goals, the Committee found that all targets were achieved and that the Companys performance was within the first
quartile compared to its peers:
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | 99.2% of meters were read on time, exceeding the 99.0% target; and
| | - |  | ------------------------------------------------------------------



| |  |  | 89.2% of customer calls were answered within 30 seconds, exceeding the 82% target.
| | - |  | ----------------------------------------------------------------------------------



| |  |  | The Company successfully executed the regulatory, environmental and energy supply goals established by the Committee.
| | - |  | ---------------------------------------------------------------------------------------------------------------------

Based on the Committees review of the Companys overall performance, considered by the Committee to have been outstanding for the several
reasons enumerated above, and on the recommendation process described above, the Committee approved cash incentive payouts for the Companys Named Executive Officers at levels that ranged from 87% to 181% of base pay.

In arriving at Mr. Mays actual annual incentive payment of $2,000,000, which was 181% of base pay, the Committee and the Board considered the
totality of the Companys financial and operating performance described above and Mr. Mays leadership in enabling the Company to meet or exceed substantially all of its performance goals. In its review of the other Named Executive
Officers, the Committee considered their contribution to the overall financial and operating performance of the Company and also the following key focus areas:



|1. | James J. Judge  earnings per share, capital costs, credit ratings, pension plan performance, regulatory initiatives and outcomes; and energy supply;
|-- | -----------------------------------------------------------------------------------------------------------------------------------------------------



|2. | Douglas S. Horan  earnings per share and legal and regulatory initiatives and outcomes;
|-- | ----------------------------------------------------------------------------------------



|3. | Werner J. Schweiger  earnings per share, execution of Operating and Capital plans, electric system reliability, service restoration, gas operations and safety
metrics;
|-- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|4. | Joseph R. Nolan, Jr.  earnings per share, customer service quality metrics, energy efficiency program results and regulatory and legislative initiatives and
outcomes.
|-- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------

At the Boards January 26, 2012 meeting, the Committee reviewed with the independent members of the Board
the Committees determination of the Annual Incentive Plan payout for Mr. May, and the independent members of the Board concurred with the Committees determination and also approved the payout.

Long Term Incentive Compensation

2011 Awards. At its January 2011 meeting, the Committee made equity-based awards to executives under a Shareholder approved equity compensation
plan, the NSTAR 2007 Long Term Incentive Plan. The awards for each executive were based both on corporate performance and on the award target levels derived from the benchmarking information described above for such positions. In addition, the
Committee considered recommendations from the Chief Executive Officer based on his assessment of each executives ability to influence corporate performance. The Committee believes that equity-based compensation under the Plan ensures that
executives have a continuing stake in the long term success of the Company and that executive interests are aligned with those of NSTAR Shareholders. The ability of executives to realize the full value



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##### Table of Contents

of the 2011 awards is dependent upon continued financial, operational and stock price performance and on the executive remaining employed at the Company for a specified number of years.

Reflecting the Committees determination to emphasize the long term equity component of the executives overall
compensation package, long term incentive award targets for 2011 for the Named Executive Officers were generally between the 50thand 75thpercentile of the urban utility group, as measured by Pay Governance LLCs market benchmarking analysis. Equity
awards in 2011 reflected a mix (based on the value of the different awards) of 50% performance share units with dividend equivalent awards and 50% deferred shares with dividend equivalent awards, all subject to Plan restrictions. For Mr. May,
the Committee set a long term incentive award target that was at approximately the 50thpercentile of the urban utility group. Mr. Mays long term incentive awards were granted in the form of 40,000 performance share units with dividend equivalent awards and 40,000 deferred shares
with dividend equivalent awards. The value of these awards is reflected in the Grants of Plan-Based Awards table.

Deferred share
awards vest at the rate of 33 1/3% per year over a three-year period from the date of grant. The Executive Personnel Committee approves stock-based awards for all senior executives. However, because the Chief Executive Officers award must
also be approved by the independent members of the Board of Trustees, the Executive Personnel Committee and the Board of Trustees established that the grant date for annual stock-based awards under the Plan is to be the date on which the Board of
Trustees approves the Chief Executive Officers stock award.

Performance share units vest only if the Company
achieves pre-set targets during the three-year performance period. For the 2011-2013 performance period, the Committee determined that the performance criteria should continue to be based on metrics tied to corporate financial performance and
shareholder returns. As a result, the Committee determined it appropriate to use (i) average earnings per share growth adjusted for certain non-recurring items (EPSG); and (ii) relative total shareholder return
(TSR), measured against the performance of companies that comprise the EEI Utility Index. At the end of the three-year period, the number of vested shares awarded is determined based on a performance matrix which provides for no vesting
of awards if the Companys EPSG is negative. The performance matrix provides vesting award opportunities from 10% to 170% of target depending on EPSG and relative TSR performance. EPSG has a range of 0% to more than 9.0%, while the range for
TSR is from below the 20thpercentile to more than the
90thpercentile. The Committee has determined that the
target payout should be achievable but challenging and that target vesting may be achieved at various combinations of EPSG and TSR performance. For example, the performance matrix provides for vesting at 100% of target if the Company achieves 4%
EPSG and relative TSR of the 50thpercentile. In addition,
the value of any performance share units that actually vest may increase or decrease over the vesting period based on the Companys share price performance. Upon completion of the merger in 2012, the performance share units that were granted in
2011 will not vest but will convert to deferred shares at target.

2009-2011 Performance Share Units. The
performance metrics related to the 2009 Performance Share Units exceeded the targeted three-year average EPS of 6%, adjusted for certain non-recurring items, but did not meet the targeted three-year total shareholder return of the 50thpercentile. The actual performance level achieved was a three-year
average adjusted EPS growth of 6.1% and a three-year total shareholder return at the 42.5 percentile, which when interpolated in accordance with the criteria established by the Committee in 2009 resulted in vesting performance share units at 94% of
target. In accordance with the plan documents, 2011 EPS was adjusted to exclude merger-related costs. This determination was made in accordance with the performance criteria as approved by the Committee at the commencement of the performance period.
At its January 23, 2012 meeting, the Committee affirmed that the actual results achieved were calculated in accordance with performance targets established and it considered all non-recurring items in determining that the adjusted EPS were in
accordance with the plan documents. The Named Executive Officers earned performance units, expressed in numbers of Common Shares, as follows: Mr. May 33,840; Mr. Judge 7,285; Mr. Horan 6,862; Mr. Schweiger 6,862 and
Mr. Nolan 3,760.



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##### Table of Contents

Other Elements of Compensation

Retirement Benefits.The Company maintains competitive broad-based benefit plans similar to those maintained by its peers, in which Company employees, including the Named Executive Officers, are
entitled to participate. These plans include health and life insurance, a qualified 401(k) savings plan and a qualified defined benefit pension plan. The qualified 401(k) savings plan includes a Company matching contribution equal to 50% of the
first 8% of eligible base salary and annual cash incentive contributed by the employee, subject to Internal Revenue Code limitations. The qualified defined benefit pension plan is a final average pay plan which is also limited by Internal Revenue
Code restrictions.

Because pension benefits under the qualified defined benefit pension plan are limited by Internal Revenue Code
restrictions, the Company sponsors two supplemental non-qualified programs: the Excess Benefit Plan, designed to make up for limits imposed by the qualified defined benefit pension plan by the Internal Revenue Code, and the Supplemental Executive
Retirement Plan, designed to provide (together with the qualified defined benefit pension plan and the excess benefit plan) pension benefits for vested participants equal to 60% of such participants pre-retirement compensation (reduced by the
value of 50% of the participants primary Social Security benefit). Amounts payable under these plans are based on base salary and annual cash incentive payments, which is consistent with the goal of providing a retirement benefit that replaces
a percentage of pre-retirement income. These plans are described in the narrative accompanying the Pension Benefits table below. These non-qualified programs are commonly offered to utility industry executives. The Company provides these
plans (and the benefits and plans listed below) to maintain a competitive benefits package for executives.

Deferred Compensation. The
Company maintains a non-qualified deferred compensation plan that allows executives, including the Named Executive Officers, to defer up to 50% of base salary and all annual incentive payments and stock incentive awards. The Plan provides for
participants to establish investment measurements based on a wide range of publicly available individual securities and mutual funds available to the executives. The Company provides this benefit to maintain a competitive benefits package for
executives. The availability of this benefit is not a factor that the Committee considers in determining total compensation.

Perquisites. The Company provides perquisites which are consistent with peer companies, as described in the Summary Compensation Table. The
current level of perquisites does not factor into decisions on total compensation.

Termination/Change in Control Agreements

Executives do not have employment agreements and do not participate in a formal severance plan. The Company has a program in place under
which senior executives have agreements that provide them with potential compensation upon a change in control of the Company. The Company has entered into these agreements because it believes that providing compensation in the event of a change in
control is necessary to attract and retain high quality executives and to ensure the executives remain focused on the business of the Company during the period leading up to a possible change in control. The terms of these agreements and the amounts
payable under them are consistent with general industry practice and were not derived from a negotiation process with our executives. The agreements are described below under Potential Payments upon Termination or Change in Control.
Under these agreements, unvested awards (except awards granted after the October 16, 2010 execution of the merger agreement with Northeast Utilities) vest upon a change in control, and the executive is entitled to severance benefits if within
24 months following a change in control the executive is terminated involuntarily (other than for cause), or terminates employment for good reason. The Company believes this form of double-trigger agreement provides each
executive with compensation in the event of a change in control, while still providing an incentive for the executive to remain employed with the Company for the transition period following a change in control.



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Other Policies Regarding Executive Stock Ownership

In order to directly align the interests of our executive officers with the interests of Shareholders, the Committee has recommended and the Board of
Trustees has approved share ownership guidelines of five times base salary for the Chief Executive Officer, three times base salary for senior executive officers and two times base salary for all other executive officers. These guidelines allow the
executives five years from the date of employment as an executive officer to achieve these levels of ownership. Each of the Named Executive Officers has achieved these ownership guidelines.

Tax and Accounting Considerations

The NSTAR 2007 Long Term Incentive Plan was approved by
Shareholders and performance share units awarded in 2011 have been structured to qualify as performance-based compensation under Section 162(m) of the Internal Revenue Code. The Company believes that the availability of a tax deduction for
other forms of compensation is secondary to the goal of providing market-based compensation to attract and retain highly qualified executives.

The Company has adopted the provisions of Financial Accounting Standards Board (FASB) Accounting Standards Codification (ASC) Topic 718,
Compensation-Stock Compensation. In general, the Company and the Committee do not take accounting considerations into account in structuring compensation arrangements.

Equity Grant Practices

Equity awards (except for the merger retention awards) noted in the
compensation tables are made at the January meeting of the Executive Personnel Committee (subject to the further approval of the Board of Trustees of the Chief Executive Officers award) when the Committee also determines base salary, annual
and long term incentive compensation targets and annual incentive awards. The date of this meeting is chosen several months in advance, and therefore awards are not coordinated with the release of material non-public information.



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EXECUTIVE PERSONNEL COMMITTEE REPORT

The Committee has reviewed and discussed the Compensation Discussion and Analysis with management. Based on this review, the Committee recommends to the
Board of Trustees that the Compensation Discussion and Analysis be included in the Companys proxy statement.

By the Executive Personnel Committee

Gary L. Countryman, Chair

Thomas G. Dignan, Jr.

James S. DiStasio

Charles K. Gifford

William C. Van Faasen



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##### Table of Contents

SUMMARY COMPENSATION TABLE

The table below summarizes the total compensation paid or earned by each of the Named Executive Officers for the fiscal years ended December 31, 2011, 2010 and 2009. The Company has not entered into
any employment agreements with any of the Named Executive Officers. Amounts listed under column Non-Equity Incentive Plan Compensation were determined by the Committee at its January 23, 2012 meeting (subject to approval by the
Board of Trustees with regard to Mr. May) and, to the extent not deferred by the executive, were paid out on January 26, 2012.



|                                                                                                |  |      |      |  |           |           |           |                   |  |           |                    |  |  |                                         |   |  |                                                                          |           |           |                             |  |           |           |  |  |        |        |  |  |           |           | 
|----------------------------------------------------------------------------------------------- |  | ---- | ---- |  | --------- | --------- | --------- | ----------------- |  | --------- | ------------------ |  |  | --------------------------------------- | - |  | ------------------------------------------------------------------------ | --------- | --------- | --------------------------- |  | --------- | --------- |  |  | ------ | ------ |  |  | --------- | --------- | 
|Name and Principal Position                                                                     |  | Year |      |  | Salary($) |           |           | StockAwards(2)($) |  |           | OptionAwards(3)($) |  |  | Non-EquityIncentive PlanCompensation($) |   |  | Change
inPension ValueandNonqualifiedDeferredCompensationEarnings (1)($) |           |           | All OtherCompensation(4)($) |  |           | Total ($) | 
|Thomas J. May  Chairman, President and Chief Executive Officer                                 |  |      | 2011 |  |           |           | 1,093,333 |                   |  |           | 3,567,200          |  |  |                                         |  |  |                                                                          |           | 2,000,000 |                             |  |           | 2,450,787 |  |  |        | 68,722 |  |  |           | 9,180,042 | 
|                                                                                                |  | 2010 |      |  |           | 1,058,333 |           |                   |  | 2,656,108 |                    |  |  | 647,710                                 |   |  |                                                                          | 2,000,000 |           |                             |  | 1,475,402 |           |  |  | 67,403 |        |  |  | 7,904,956 |          
|                                                                                                |  | 2009 |      |  |           | 1,021,667 |           |                   |  | 2,443,320 |                    |  |  | 578,760                                 |   |  |                                                                          | 1,800,000 |           |                             |  | 1,464,204 |           |  |  | 88,014 |        |  |  | 7,395,965 |          
|                                                                                                |  |      |      |  |           |           |           |                  
|James J. Judge  Senior Vice President and Chief Financial Officer                              |  |      | 2011 |  |           |           | 486,000   |                   |  |           | 793,702            |  |  |                                         |  |  |                                                                          |           | 565,000   |                             |  |           | 1,387,622 |  |  |        | 21,189 |  |  |           | 3,253,513 | 
|                                                                                                |  | 2010 |      |  |           | 470,667   |           |                   |  | 2,828,321 |                    |  |  | 146,100                                 |   |  |                                                                          | 565,000   |           |                             |  | 1,007,245 |           |  |  | 21,141 |        |  |  | 5,038,474 |          
|                                                                                                |  | 2009 |      |  |           | 451,667   |           |                   |  | 525,993   |                    |  |  | 134,680                                 |   |  |                                                                          | 550,000   |           |                             |  | 775,669   |           |  |  | 21,238 |        |  |  | 2,459,247 |          
|                                                                                                |  |      |      |  |           |           |           |                  
|Douglas S. Horan  Senior Vice President, Strategy, Law & Policy, Secretary and General
Counsel |  |      | 2011 |  |           |           | 454,333   |                   |  |           | 740,194            |  |  |                                         |  |  |                                                                          |           | 525,000   |                             |  |           | 933,365   |  |  |        | 26,255 |  |  |           | 2,679,147 | 
|                                                                                                |  | 2010 |      |  |           | 440,000   |           |                   |  | 550,924   |                    |  |  | 136,360                                 |   |  |                                                                          | 600,000   |           |                             |  | 505,311   |           |  |  | 26,056 |        |  |  | 2,258,651 |          
|                                                                                                |  | 2009 |      |  |           | 424,500   |           |                   |  | 495,451   |                    |  |  | 134,680                                 |   |  |                                                                          | 510,000   |           |                             |  | 835,076   |           |  |  | 25,937 |        |  |  | 2,425,644 |          
|                                                                                                |  |      |      |  |           |           |           |                  
|Werner J. Schweiger  Senior Vice President  Operations                                        |  |      | 2011 |  |           |           | 454,333   |                   |  |           | 740,194            |  |  |                                         |  |  |                                                                          |           | 525,000   |                             |  |           | 637,063   |  |  |        | 19,670 |  |  |           | 2,376,260 | 
|                                                                                                |  | 2010 |      |  |           | 440,000   |           |                   |  | 2,546,096 |                    |  |  | 136,360                                 |   |  |                                                                          | 525,000   |           |                             |  | 422,078   |           |  |  | 19,269 |        |  |  | 4,088,803 |          
|                                                                                                |  | 2009 |      |  |           | 422,333   |           |                   |  | 495,451   |                    |  |  | 134,680                                 |   |  |                                                                          | 510,000   |           |                             |  | 293,698   |           |  |  | 19,302 |        |  |  | 1,875,464 |          
|                                                                                                |  |      |      |  |           |           |           |                  
|Joseph R. Nolan, Jr.  Senior Vice President  Customer & Corporate Relations                   |  |      | 2011 |  |           |           | 340,667   |                   |  |           | 365,638            |  |  |                                         |  |  |                                                                          |           | 300,000   |                             |  |           | 451,230   |  |  |        | 21,623 |  |  |           | 1,479,158 | 
|                                                                                                |  | 2010 |      |  |           | 330,333   |           |                   |  | 1,504,442 |                    |  |  | 68,180                                  |   |  |                                                                          | 300,000   |           |                             |  | 204,383   |           |  |  | 21,274 |        |  |  | 2,428,612 |          
|                                                                                                |  | 2009 |      |  |           | 318,833   |           |                   |  | 271,480   |                    |  |  | 58,240                                  |   |  |                                                                          | 290,000   |           |                             |  | 125,537   |           |  |  | 21,456 |        |  |  | 1,085,546 |          

(1) In the case of Mr. May, the increase in present value for 2011 related primarily to a change in the discount rate
from 5.3% to 4.5%. Had there been no change in discount rate, the reported increase in pension value would have been approximately $980,000. This amount represents the change in the estimated present value of future pension payments during the year.
There were no above-market earnings in deferred compensation value during 2011, 2010 or 2009, since the terms of the Deferred Compensation Plan provide for market-based investments, including NSTAR Common Shares. The amount reflects the actuarial
increase in the present value of the Named Executive Officers benefits under all pension plans established by the Company determined using the discount rate and mortality rate assumptions used by the Company for financial statement purposes.

(2) Reflects the aggregate grant date fair value of Deferred Common Shares and Performance Share Units granted January 27,
2011, January 28, 2010 and January 22, 2009 in accordance with FASB ASC Topic 718. Assuming the highest level of performance, the maximum value of Performance Share Units granted in 2011 would be $2,680,000 for Mr. May; $596,300
for Mr. Judge; $556,100 for Mr. Horan; $556,100 for Mr. Schweiger; and $274,700 for Mr. Nolan. Assuming the highest level of performance, the maximum value of Performance Share Units granted in 2010 would be $1,992,172 for
Mr. May; $443,313 for Mr. Judge; $413,212 for Mr. Horan; $413,212 for Mr. Schweiger; and $207,974 for Mr. Nolan. Based on the level of performance achieved, the value of Performance Share Units granted in 2009 was $1,158,480
for Mr. May; $249,395 for Mr. Judge; $234,914 for Mr. Horan; $234,914 for Mr. Schweiger; and $128,720 for Mr. Nolan.

In 2010 NSTAR approved and allocated a retention pool in an aggregate amount not to exceed $10 million to be awarded to key employees, including some of
the executive officers (but not the chief executive officer), to help ensure their continued dedication to the Company both before and after the completion of the merger. On November 19, 2010, NSTAR entered into executive retention award
agreements with James J. Judge, Werner J. Schweiger and Joseph R. Nolan, providing for retention awards of deferred NSTAR common shares in the following amounts: Mr. Judge 53,600 shares; Mr. Schweiger 47,800 shares; and Mr. Nolan
29,400 shares. The terms of the retention agreements generally provide that the deferred NSTAR common shares will convert into deferred Northeast Utilities common shares upon the merger; the deferred shares become fully vested upon the third
anniversary of the closing of the merger; and the retention award will vest in the event the officers employment is terminated after the closing of the merger by the Company (other than for cause) or by reason of the officers death or
disability prior to the third anniversary of the closing of the merger under the terms of the retention agreement. Vesting of these retention awards are contingent upon the merger closing.



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##### Table of Contents

(3) Reflects the aggregate grant date fair value of Options granted January 28, 2010 and
January 22, 2009 in accordance with FASB ASC Topic 718. Options were not granted to the Named Executive Officers in 2011.

(4) The amounts
in this column include matching 401(k) savings plan contributions in 2011, 2010 and 2009 for each of the Named Executive Officers in the amount of $9,800, $9,800 and $9,800 respectively. Perquisites include a financial planning and health services
plan, amounts paid by the Company for Company-leased vehicles, home security systems and tickets to sporting events. The imputed income and tax gross up amount for a life insurance benefit granted in 2005 to Mr. May for 2009 is $55,324. As of
2011, the Company no longer pays for the gross up for this life insurance benefit, and the imputed income for this benefit was $36,052. Perquisites are valued based upon the incremental, direct cost to the Company.



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##### Table of Contents

GRANTS OF PLAN-BASED AWARDS

Annual cash incentive awards are made under the Companys Annual Incentive Plan. The deferred share and performance share awards
granted to the Named Executive Officers in 2011 were granted under the NSTAR 2007 Long Term Incentive Plan. The deferred share awards are time-vested at the rate of 331/3% per year over a three-year period from the date of the grant. Performance share units will vest only if
certain performance targets are achieved at the end of the three-year performance period. Dividend equivalent awards accompany the awards of deferred shares and performance share units and are based upon the Companys prevailing dividend rate.



|                    |  |               |          |  |                                                                  |  |   |                                                           |  |  |                                |  |  |                                                    |           |  |            |  |       |  |  |  |        |  |  |  |        |  |  |  |        |  |  |  |           | 
|------------------- |  | ------------- | -------- |  | ---------------------------------------------------------------- |  | - | --------------------------------------------------------- |  |  | ------------------------------ |  |  | -------------------------------------------------- | --------- |  | ---------- |  | ----- |  |  |  | ------ |  |  |  | ------ |  |  |  | ------ |  |  |  | --------- | 
|Name                |  | Grant Date    |          |  | Estimated Possible Payouts UnderNon-equity (Cash) Incentive Plan |  |   | Estimated Possible PayoutsUnder Equity Incentive Plan (1) |  |  | AllOtherStockAwards:# ofShares |  |  | Grant DateFair Valueof Stockand OptionAwards(2)($) |          
|                    |  | Thres-Hold($) |          |  | Target ($)                                                       |  |   | Maximum($)                                                |  |  | Thres-Hold                     |  |  | Target(#)                                          |           |  | Maximum(#) |  |       | 
|Thomas J. May       |  |               | 01-27-11 |  |                                                                  |  |   |                                                           |  |  |                                |  |  |                                                    |           |  |            |  |       |  |  |  |        |  |  |  |        |  |  |  | 40,000 |  |  |  | 1,730,400 | 
|                    |  |               |          |  |                                                                  |  |   |                                                           | 
|                    |  |               | 01-27-11 |  |                                                                  |  | 0 |                                                           |  |  | 1,105,000                      |  |  |                                                    | 2,210,000 |  |            |  | 4,000 |  |  |  | 40,000 |  |  |  | 68,000 |  |  |  |        |  |  |  | 1,836,800 | 
|                    |  |               |          |  |                                                                  |  |   |                                                           |  |  |                                |  |  |                                                    |           |  |            |  |       |  |  |  |        |  |  |  |        |  |  |  |        |  |  |  |           | 
|                    |  |               |          |  |                                                                  |  |   |                                                           | 
|James J. Judge      |  |               | 01-27-11 |  |                                                                  |  |   |                                                           |  |  |                                |  |  |                                                    |           |  |            |  |       |  |  |  |        |  |  |  |        |  |  |  | 8,900  |  |  |  | 385,014   | 
|                    |  |               |          |  |                                                                  |  |   |                                                           | 
|                    |  |               | 01-27-11 |  |                                                                  |  | 0 |                                                           |  |  | 294,600                        |  |  |                                                    | 982,000   |  |            |  | 890   |  |  |  | 8,900  |  |  |  | 15,130 |  |  |  |        |  |  |  | 408,688   | 
|                    |  |               |          |  |                                                                  |  |   |                                                           |  |  |                                |  |  |                                                    |           |  |            |  |       |  |  |  |        |  |  |  |        |  |  |  |        |  |  |  |           | 
|                    |  |               |          |  |                                                                  |  |   |                                                           | 
|Douglas S. Horan    |  |               | 01-27-11 |  |                                                                  |  |   |                                                           |  |  |                                |  |  |                                                    |           |  |            |  |       |  |  |  |        |  |  |  |        |  |  |  | 8,300  |  |  |  | 359,058   | 
|                    |  |               |          |  |                                                                  |  |   |                                                           | 
|                    |  |               | 01-27-11 |  |                                                                  |  | 0 |                                                           |  |  | 275,400                        |  |  |                                                    | 918,000   |  |            |  | 830   |  |  |  | 8,300  |  |  |  | 14,110 |  |  |  |        |  |  |  | 381,136   | 
|                    |  |               |          |  |                                                                  |  |   |                                                           |  |  |                                |  |  |                                                    |           |  |            |  |       |  |  |  |        |  |  |  |        |  |  |  |        |  |  |  |           | 
|                    |  |               |          |  |                                                                  |  |   |                                                           | 
|Werner J. Schweiger |  |               | 01-27-11 |  |                                                                  |  |   |                                                           |  |  |                                |  |  |                                                    |           |  |            |  |       |  |  |  |        |  |  |  |        |  |  |  | 8,300  |  |  |  | 359,058   | 
|                    |  |               |          |  |                                                                  |  |   |                                                           | 
|                    |  |               | 01-27-11 |  |                                                                  |  | 0 |                                                           |  |  | 275,400                        |  |  |                                                    | 918,000   |  |            |  | 830   |  |  |  | 8,300  |  |  |  | 14,110 |  |  |  |        |  |  |  | 381,136   | 
|                    |  |               |          |  |                                                                  |  |   |                                                           |  |  |                                |  |  |                                                    |           |  |            |  |       |  |  |  |        |  |  |  |        |  |  |  |        |  |  |  |           | 
|                    |  |               |          |  |                                                                  |  |   |                                                           | 
|Joseph R. Nolan     |  |               | 01-27-11 |  |                                                                  |  |   |                                                           |  |  |                                |  |  |                                                    |           |  |            |  |       |  |  |  |        |  |  |  |        |  |  |  | 4,100  |  |  |  | 177,366   | 
|                    |  |               |          |  |                                                                  |  |   |                                                           | 
|                    |  |               | 01-27-11 |  |                                                                  |  | 0 |                                                           |  |  | 154,800                        |  |  |                                                    | 688,000   |  |            |  | 410   |  |  |  | 4,100  |  |  |  | 6,970  |  |  |  |        |  |  |  | 188,272   | 

(1) In 2011 the Named Executive Officers were awarded performance share units as part of their long term incentive plan
awards. The performance period runs from January 1, 2011 through December 31, 2013. Performance awards will be earned based on meeting preset targets involving the Companys EPS growth and the Companys TSR percentile ranking
relative to a comparator group comprised of companies within the Edison Electric Institute Index. Upon the closing of the merger with Northeast Utilities, the Performance awards will be converted at target to NU Restricted Shares and vest concurrent
with the Deferred Shares.

(2) Deferred shares were granted at full market closing price of NSTARs Common Shares on date of grant of
$43.26. The fair value of the performance share units were $45.92 for the targeted performance level using a binomial option-pricing model. Upon the closing of the merger with Northeast Utilities, the Performance awards will be converted at target
to NU Restricted Shares and vest concurrent with the Deferred Shares.



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OUTSTANDING EQUITY AWARDS AT YEAR-END

The following represents deferred share, performance share units and option awards under the NSTAR 1997 Share Incentive Plan and the NSTAR 2007 Long Term
Incentive Plan. The market value of unvested stock awards was based on the Companys year-end 2011 closing share price of $46.96. Vested options may be exercised over a ten-year period from date of grant.



|                    |  |                                                            |         |  |                                                                  |  |        |                         |  |  |                       |  |  |                                                |            |  |                                                      |  |        |                                             |  |  |                                                  |  |  |  |         |  |  |  |           | 
|------------------- |  | ---------------------------------------------------------- | ------- |  | ---------------------------------------------------------------- |  | ------ | ----------------------- |  |  | --------------------- |  |  | ---------------------------------------------- | ---------- |  | ---------------------------------------------------- |  | ------ | ------------------------------------------- |  |  | ------------------------------------------------ |  |  |  | ------- |  |  |  | --------- | 
|                    |  | Option Awards                                              |         |  | Stock Awards                                                     | 
|Name                |  | Number ofSecuritiesUnderlyingUnexercisedOptionsExercisable |         |  | Number ofSecuritiesUnderlyingUnexercisedOptionsUnexercisable (1) |  |        | OptionExercisePrice ($) |  |  | OptionExpiration Date |  |  | Number ofShares ofStock ThatHave NotVested (2) |            |  | Market Valueof Shares ofStock ThatHave NotVested ($) |  |        | Number ofEquityAwardsThat HaveNotVested (3) |  |  | MarketValue ofEquityAwardsThat HaveNot Vested($) | 
|Thomas J. May       |  |                                                            | 200,000 |  |                                                                  |  |        |                         |  |  | 24.205                |  |  |                                                | 04-28-2014 |  |                                                      |  |        |                                             |  |  |                                                  |  |  |  |         |  |  |  |           | 
|                    |  |                                                            | 200,000 |  |                                                                  |  |        |                         |  |  | 29.600                |  |  |                                                | 06-09-2015 |  |                                                      |  |        |                                             |  |  |                                                  |  |  |  |         |  |  |  |           | 
|                    |  |                                                            | 200,000 |  |                                                                  |  |        |                         |  |  | 27.730                |  |  |                                                | 04-27-2016 |  |                                                      |  |        |                                             |  |  |                                                  |  |  |  |         |  |  |  |           | 
|                    |  |                                                            | 186,000 |  |                                                                  |  |        |                         |  |  | 36.890                |  |  |                                                | 05-03-2017 |  |                                                      |  |        |                                             |  |  |                                                  |  |  |  |         |  |  |  |           | 
|                    |  |                                                            | 150,000 |  |                                                                  |  |        |                         |  |  | 32.450                |  |  |                                                | 01-24-2018 |  |                                                      |  |        |                                             |  |  |                                                  |  |  |  |         |  |  |  |           | 
|                    |  |                                                            | 106,000 |  |                                                                  |  | 53,000 |                         |  |  | 34.020                |  |  |                                                | 01-22-2019 |  |                                                      |  |        |                                             |  |  |                                                  |  |  |  |         |  |  |  |           | 
|                    |  |                                                            | 44,333  |  |                                                                  |  | 88,667 |                         |  |  | 35.280                |  |  |                                                | 01-28-2020 |  |                                                      |  | 76,267 |                                             |  |  | 3,581,498                                        |  |  |  | 110,240 |  |  |  | 5,176,870 | 
|                    |  |                                                            |         |  |                                                                  |  |        |                        
|James J. Judge      |  |                                                            | 40,000  |  |                                                                  |  |        |                         |  |  | 36.890                |  |  |                                                | 05-03-2017 |  |                                                      |  |        |                                             |  |  |                                                  |  |  |  |         |  |  |  |           | 
|                    |  |                                                            | 30,000  |  |                                                                  |  |        |                         |  |  | 32.450                |  |  |                                                | 01-24-2018 |  |                                                      |  |        |                                             |  |  |                                                  |  |  |  |         |  |  |  |           | 
|                    |  |                                                            | 24,667  |  |                                                                  |  | 12,333 |                         |  |  | 34.020                |  |  |                                                | 01-22-2019 |  |                                                      |  |        |                                             |  |  |                                                  |  |  |  |         |  |  |  |           | 
|                    |  |                                                            | 10,000  |  |                                                                  |  | 20,000 |                         |  |  | 35.280                |  |  |                                                | 01-28-2020 |  |                                                      |  | 70,483 |                                             |  |  | 3,309,882                                        |  |  |  | 24,285  |  |  |  | 1,140,424 | 
|                    |  |                                                            |         |  |                                                                  |  |        |                        
|Douglas S. Horan    |  |                                                            | 36,000  |  |                                                                  |  |        |                         |  |  | 36.890                |  |  |                                                | 05-03-2017 |  |                                                      |  |        |                                             |  |  |                                                  |  |  |  |         |  |  |  |           | 
|                    |  |                                                            | 30,000  |  |                                                                  |  |        |                         |  |  | 32.450                |  |  |                                                | 01-24-2018 |  |                                                      |  |        |                                             |  |  |                                                  |  |  |  |         |  |  |  |           | 
|                    |  |                                                            | 24,667  |  |                                                                  |  | 12,333 |                         |  |  | 34.020                |  |  |                                                | 01-22-2019 |  |                                                      |  |        |                                             |  |  |                                                  |  |  |  |         |  |  |  |           | 
|                    |  |                                                            | 9,333   |  |                                                                  |  | 18,667 |                         |  |  | 35.280                |  |  |                                                | 01-28-2020 |  |                                                      |  | 15,767 |                                             |  |  | 740,418                                          |  |  |  | 22,712  |  |  |  | 1,066,556 | 
|                    |  |                                                            |         |  |                                                                  |  |        |                        
|Werner J. Schweiger |  |                                                            | 35,000  |  |                                                                  |  |        |                         |  |  | 21.600                |  |  |                                                | 04-30-2013 |  |                                                      |  |        |                                             |  |  |                                                  |  |  |  |         |  |  |  |           | 
|                    |  |                                                            | 70,000  |  |                                                                  |  |        |                         |  |  | 24.205                |  |  |                                                | 04-28-2014 |  |                                                      |  |        |                                             |  |  |                                                  |  |  |  |         |  |  |  |           | 
|                    |  |                                                            | 60,000  |  |                                                                  |  |        |                         |  |  | 29.600                |  |  |                                                | 06-09-2015 |  |                                                      |  |        |                                             |  |  |                                                  |  |  |  |         |  |  |  |           | 
|                    |  |                                                            | 48,000  |  |                                                                  |  |        |                         |  |  | 27.730                |  |  |                                                | 04-27-2016 |  |                                                      |  |        |                                             |  |  |                                                  |  |  |  |         |  |  |  |           | 
|                    |  |                                                            | 36,000  |  |                                                                  |  |        |                         |  |  | 36.890                |  |  |                                                | 05-03-2017 |  |                                                      |  |        |                                             |  |  |                                                  |  |  |  |         |  |  |  |           | 
|                    |  |                                                            | 30,000  |  |                                                                  |  |        |                         |  |  | 32.450                |  |  |                                                | 01-24-2018 |  |                                                      |  |        |                                             |  |  |                                                  |  |  |  |         |  |  |  |           | 
|                    |  |                                                            | 24,667  |  |                                                                  |  | 12,333 |                         |  |  | 34.020                |  |  |                                                | 01-22-2019 |  |                                                      |  |        |                                             |  |  |                                                  |  |  |  |         |  |  |  |           | 
|                    |  |                                                            | 9,333   |  |                                                                  |  | 18,667 |                         |  |  | 35.280                |  |  |                                                | 01-28-2020 |  |                                                      |  | 63,567 |                                             |  |  | 2,985,106                                        |  |  |  | 22,712  |  |  |  | 1,066,556 | 
|                    |  |                                                            |         |  |                                                                  |  |        |                        
|Joseph R. Nolan     |  |                                                            | 5,000   |  |                                                                  |  |        |                         |  |  | 32.450                |  |  |                                                | 01-24-2018 |  |                                                      |  |        |                                             |  |  |                                                  |  |  |  |         |  |  |  |           | 
|                    |  |                                                            | 5,333   |  |                                                                  |  | 5,334  |                         |  |  | 34.020                |  |  |                                                | 01-22-2019 |  |                                                      |  |        |                                             |  |  |                                                  |  |  |  |         |  |  |  |           | 
|                    |  |                                                            | 4,667   |  |                                                                  |  | 9,333  |                         |  |  | 35.280                |  |  |                                                | 01-28-2020 |  |                                                      |  | 37,367 |                                             |  |  | 1,754,754                                        |  |  |  | 11,660  |  |  |  | 547,554   | 

(1) Unexercisable options will vest as follows: for Mr. May, 97,334 between 1/22/12 and 1/28/12, 44,333 on 1/28/13;
for Mr. Judge, 22,333 between 1/22/12 and 1/28/12 and 10,000 on 1/28/13; for Mr. Horan, 21,667 between 1/22/12 and 1/28/12 and 9,333 on 1/28/13; for Mr. Schweiger, 21,667 between 1/22/12 and 1/28/12 and 9,333 on 1/28/13; and for
Mr. Nolan, 10,000 between 1/22/12 and 1/28/12 and 4,667 on 1/28/13.

(2) Shares will vest as follows: for Mr. May, 37,467 between
1/22/12 and 1/28/12, 25,467 between 1/22/13 and 1/28/13 and 13,333 on 1/28/14; for Mr. Judge, 8,250 between 1/22/12 and 1/28/12, 5,667 between 1/22/13 and 1/28/13 and 2,966 on 1/28/14; for Mr. Horan, 7,717 between 1/22/12 and 1/28/12,
5,283 between 1/22/13 and 1/28/13 and 2,767 on 1/28/14; for Mr. Schweiger, 7,717 between 1/22/12 and 1/28/12, 5,283 between 1/22/13 and 1/28/13 and 2,767 on 1/28/14; and for Mr. Nolan, 3,967 between 1/22/12 and 1/28/12, 2,633 between
1/22/13 and 1/28/13 and 1,367 on 1/28/14. An additional 130,800 unvested deferred shares granted pursuant to the retention pool will vest subject to three years of continuous service following completion of the merger with Northeast Utilities (Mr.
Judge 53,600; Mr. Schweiger 47,800; and Mr. Nolan 29,400). See note 1 to the Summary Compensation Table.

(3) The amount shown
includes the unvested portion of performance share awards with respect to the three year performance periods ending December 31, 2011, December 31, 2012 and December 31, 2013. Performance share units relate to awards made in
January 2009, 2010 and 2011 as follows: for Mr. May 33,840, 36,400 and 40,000 units; for Mr. Judge, 7,285, 8,100 and 8,900 units; for Mr. Horan, 6,862, 7,550 and 8,300 units; for Mr. Schweiger 6,862, 7,550 and 8,300 units; and
for Mr. Nolan 3,760, 3,800 and 4,100 units, respectively. The awards reflect the number of performance shares based on actual results for awards made in 2009 and the target number of awards made in 2010 and 2011 as stipulated in the merger
agreement.



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##### Table of Contents

OPTION EXERCISES AND STOCK VESTED

In 2011, one-third of deferred shares granted under the NSTAR Long Term Incentive Plan in each of 2008, 2009 and 2010 vested. Also vesting in 2011 were
all of the Performance Shares granted in 2008, which attained a performance level of 153% of target. The number of deferred shares and values below include dividend equivalents which are added when vested.



|                     |  |                                       |        |  |                              |  |         |                                      |  |  |                                 |  |  |  |           | 
|-------------------- |  | ------------------------------------- | ------ |  | ---------------------------- |  | ------- | ------------------------------------ |  |  | ------------------------------- |  |  |  | --------- | 
|                     |  | Option Awards                         |        |  | Stock Awards                 | 
|Name                 |  | Numberof SharesAcquiredonExercise (#) |        |  | ValueRealized onExercise ($) |  |         | Numberof SharesAcquiredonVesting (#) |  |  | ValueRealized onVesting (1) ($) | 
|Thomas J. May        |  |                                       |       |  |                              |  |        |                                      |  |  | 89,489                          |  |  |  | 3,872,196 | 
|James J. Judge       |  |                                       |       |  |                              |  |        |                                      |  |  | 21,569                          |  |  |  | 933,309   | 
|Douglas S. Horan     |  |                                       |       |  |                              |  |        |                                      |  |  | 19,090                          |  |  |  | 826,033   | 
|Werner J. Schweiger  |  |                                       | 30,000 |  |                              |  | 670,050 |                                      |  |  | 19,090                          |  |  |  | 826,033   | 
|Joseph R. Nolan, Jr. |  |                                       |       |  |                              |  |        |                                      |  |  | 10,212                          |  |  |  | 441,885   | 

(1) Mr. Schweiger deferred 100% of his vested stock awards in accordance with the Companys Non-Qualified
Deferred Compensation Plan.



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##### Table of Contents

PENSION BENEFITS

Tax-Qualified Pension Plan. NSTAR maintains a tax-qualified defined benefit plan (the Pension Plan) for substantially all employees of the Company, including the Named Executive
Officers. Under the Pension Plan, benefits are based on the following factors:



| |  |  | Participants receive a benefit based upon a percentage of the participants final average compensation, subject to a $250,000 statutory limitation
(as indexed) on eligible compensation.
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | The percentage of final average compensation is determined by totaling the participants annual benefit credits up to a maximum of
325% (525% for employees hired before August 18, 1999).
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Annual benefit credits range from 5% for years of service under age 25 to 15% for years of service on and after attaining age 55. Additional annual
benefit credits apply for employees hired before August 18, 1999.
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Final average compensation is the average of any three years of annual qualified compensation within the participants last ten years of
employment that produces the highest average pay. Annual qualified compensation includes each participants base pay, lump sum merit increases and certain cash incentive awards.
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | The normal retirement age is 65. The Pension Plan has a three-year vesting provision.
| | - |  | -------------------------------------------------------------------------------------



| |  |  | Benefits are payable following termination of employment either as a lump sum or in one of several annuity options.
| | - |  | -------------------------------------------------------------------------------------------------------------------

Excess Benefit Plan. For employees whose eligible compensation exceeds the $250,000 statutory limitation set forth above, including the
Named Executive Officers, we maintain a non-qualified excess benefit plan (the Excess Benefit Plan). The Excess Benefit Plan is designed to provide the benefits that would be payable under the Pension Plan but for the statutory
limitations imposed by the Internal Revenue Code. Amounts payable under the Excess Benefit Plan are generally available in the same form as the participants benefits under the Pension Plan. In addition, amounts payable under the Excess Benefit
Plan are offset by amounts payable under the Pension Plan.

Supplemental Executive Retirement Plan. NSTAR also maintains a
non-qualified, supplemental executive retirement plan (SERP) to provide our executives, including the Named Executive Officers, with competitive retirement benefits and to encourage their continued employment. Under the SERP, benefits
are based on the following factors:



| |  |  | The SERP provides a maximum benefit of 60% of eligible compensation, based upon a straight life annuity, reduced by up to 50% of the participants
primary Social Security benefit and by the entire amount of the combined benefits the participant receives under the Pension Plan and the Excess Benefit Plan.
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Participants are eligible for maximum benefits after attainment of 20 years of credited service and age 62 (age 60 as to executive officers appointed
prior to 1996). Participants who attain age 55 and have completed five years of service with the Company are eligible to receive a reduced annual benefit equal to the amount the participant would have received at age 62 less 0.41666% times the
number of months between the participants benefit commencement date and attainment of age 62.
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | A participant may elect to receive his or her SERP benefit in the form of a single life annuity, a spousal joint and survivor annuity or as a lump sum.
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------

Messrs. May, Judge and Horan are all over 55 years old and are fully vested in their respective accrued SERP benefits.



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##### Table of Contents

For certain participants, the benefits payable under the SERP differ from those described above. The SERP
benefit payable to Mr. Schweiger is fully vested and is further reduced by benefits he is entitled to receive under previous employers retirement plans. Upon retirement, Mr. May is entitled to receive the greater of the benefit
payable under the SERP or the Key Executive Benefit Plan. Under the Key Executive Benefit Plan, Mr. May is entitled to an alternative supplemental retirement benefit equal to 33% of final base salary annually for 15 years in lieu of the
benefits provided under the SERP. Benefits that would be available under the Key Executive Benefit Plan are less than those available under the SERP and therefore have not been included in the present value of accumulated benefit shown below. NSTAR
does not have a policy of granting extra years of credited service, except in the case of the change in control agreements discussed below.

The following table shows the estimated present value of annuities under NSTARs pension plans, determined using the same discount rate and
mortality assumptions used in the Companys financial statements which are included in Note H to the Companys audited financial statements on Form 10-K for the fiscal year ended December 31, 2011 as filed with the SEC on
February 6, 2012. No pension payments were made to the Named Executive Officers during 2011.

PENSION BENEFITS



|                     |  |           |  |                                    |       |  |                                        |  |            | 
|-------------------- |  | --------- |  | ---------------------------------- | ----- |  | -------------------------------------- |  | ---------- | 
|Name                 |  | Plan Name |  | Number ofYears CreditedService (#) |       |  | Present Value ofAccumulatedBenefit ($) | 
|Thomas J. May        |  | Qualified |  |                                    | 35.50 |  |                                        |  | 2,204,589  | 
|                     |  | Excess    |  |                                    | 35.50 |  |                                        |  | 11,140,000 | 
|                     |  | SERP      |  |                                    | 20.00 |  |                                        |  | 8,477,915  | 
|                     |  |           |  |                                    |       |  |                                        |  |            | 
|                     |  | Total     |  |                                    |       |  |                                        |  | 21,822,504 | 
|                     |  |           |  |                                    |       |  |                                        |  |            | 
|James J. Judge       |  | Qualified |  |                                    | 34.33 |  |                                        |  | 1,670,504  | 
|                     |  | Excess    |  |                                    | 34.33 |  |                                        |  | 2,076,536  | 
|                     |  | SERP      |  |                                    | 20.00 |  |                                        |  | 3,257,699  | 
|                     |  |           |  |                                    |       |  |                                        |  |            | 
|                     |  | Total     |  |                                    |       |  |                                        |  | 7,004,739  | 
|                     |  |           |  |                                    |       |  |                                        |  |            | 
|Douglas S. Horan     |  | Qualified |  |                                    | 34.42 |  |                                        |  | 2,108,962  | 
|                     |  | Excess    |  |                                    | 34.42 |  |                                        |  | 2,254,943  | 
|                     |  | SERP      |  |                                    | 20.00 |  |                                        |  | 3,327,366  | 
|                     |  |           |  |                                    |       |  |                                        |  |            | 
|                     |  | Total     |  |                                    |       |  |                                        |  | 7,691,271  | 
|                     |  |           |  |                                    |       |  |                                        |  |            | 
|Werner J. Schweiger  |  | Qualified |  |                                    | 9.83  |  |                                        |  | 266,084    | 
|                     |  | Excess    |  |                                    | 9.83  |  |                                        |  | 763,500    | 
|                     |  | SERP      |  |                                    | 9.83  |  |                                        |  | 1,009,228  | 
|                     |  |           |  |                                    |       |  |                                        |  |            | 
|                     |  | Total     |  |                                    |       |  |                                        |  | 2,038,812  | 
|                     |  |           |  |                                    |       |  |                                        |  |            | 
|Joseph R. Nolan, Jr. |  | Qualified |  |                                    | 26.42 |  |                                        |  | 570,359    | 
|                     |  | Excess    |  |                                    | 26.42 |  |                                        |  | 881,535    | 
|                     |  | SERP      |  |                                    | 12.33 |  |                                        |  | 179,235    | 
|                     |  |           |  |                                    |       |  |                                        |  |            | 
|                     |  | Total     |  |                                    |       |  |                                        |  | 1,631,129  | 
|                     |  |           |  |                                    |       |  |                                        |  |            | 



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NON-QUALIFIED DEFERRED COMPENSATION

The Company maintains a non-qualified deferred compensation plan that allows executives, including the Named Executive Officers, to defer up to 50% of
base salary and all annual incentive payments and stock incentive awards. Investment measures are used to adjust from time to time the participants account balances under the plan. Currently, participants may select publicly-traded securities
and mutual funds as investments, and the aggregate earnings represent market return on those investments. The Company maintains a Rabbi Trust and matches all investment elections with actual investments. At the time of a deferral election,
participants may elect to receive payment of such amounts at a date fixed at the time of deferral at least five years after such deferral, or up to the participants retirement date or other termination of employment. Amounts credited to the
participants account as a result of the selected investment measures are paid at termination of employment or retirement. Participants and their beneficiaries may also receive their account balance upon death or total and permanent disability.
Payouts under the plan are made in the form of a lump sum or over a period of five, ten or fifteen years.



|                     |  |                                          |           |  |                                  |  |           |                                       |  |  |                                      |  |  |  |            | 
|-------------------- |  | ---------------------------------------- | --------- |  | -------------------------------- |  | --------- | ------------------------------------- |  |  | ------------------------------------ |  |  |  | ---------- | 
|Name                 |  | ExecutiveContributions inLast FY (1) ($) |           |  | Aggregate Earningsin Last FY ($) |  |           | AggregateWithdrawals/Distributions($) |  |  | Aggregate Balance atLast FYE (2) ($) | 
|Thomas J. May        |  |                                          |          |  |                                  |  | 3,687,613 |                                       |  |  |                                     |  |  |  | 34,500,157 | 
|James J. Judge       |  |                                          |          |  |                                  |  | 820,530   |                                       |  |  | 1,749,180                            |  |  |  | 4,686,344  | 
|Douglas S. Horan     |  |                                          |          |  |                                  |  | 628,846   |                                       |  |  |                                     |  |  |  | 7,872,227  | 
|Werner J. Schweiger  |  |                                          | 1,331,442 |  |                                  |  | 146,763   |                                       |  |  | 1,107,383                            |  |  |  | 7,686,446  | 
|Joseph R. Nolan, Jr. |  |                                          |          |  |                                  |  | 297,674   |                                       |  |  | 327,269                              |  |  |  | 2,408,104  | 

(1) The amounts reported in this column for each Named Executive Officer are reflected as compensation to such Named
Executive Officer in the Summary Compensation Table.



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POTENTIAL PAYMENTS UPON TERMINATION OR CHANGE IN CONTROL

Set forth below is the amount of compensation that each of the Named Executive Officers of the Company would receive in the event of termination of such
executives employment, including following death or total and permanent disability, or a change in control that is incremental to amounts previously earned and accrued by the executive for performance of duties to the date of termination. The
amounts shown assume that such termination or change in control was effective as of December 31, 2011, and are estimates of the amounts which would be paid out to the executives or their named beneficiary upon their termination due to death or
total and permanent disability or upon a change in control. For the equity component of such compensation, the Company used the closing price of NSTAR Common Shares as of December 31, 2011. The following payments are in addition to the present
value of accumulated pension benefits and the aggregate amount of non-qualified deferred compensation for the Named Executive Officers as reported in this proxy statement. The actual amounts to be paid out can only be determined at the time of such
events.

The total benefits payable to each of the Named Executive Officers for the events described below, if an event occurred on
December 31, 2011, are as follows:



|                     |  |                            |  |                           |  |                                                      
|-------------------- |  | -------------------------- |  | ------------------------- |  | -----------------------------------------------------
|                     |  | Death or Disability($) (1) |  | Change in Control
($) (2) |  | Change in Control andTermination of Employment($)
(3)
|Thomas J. May        |  | 5,302,930                  |  | 5,133,874                 |  | 21,182,718                                           
|James J. Judge       |  | 3,703,091                  |  | 1,148,467                 |  | 9,349,507                                            
|Douglas S. Horan     |  | 1,118,023                  |  | 1,082,803                 |  | 7,764,764                                            
|Werner J. Schweiger  |  | 3,362,711                  |  | 1,082,803                 |  | 8,767,839                                            
|Joseph J. Nolan, Jr. |  | 1,932,768                  |  | 538,056                   |  | 5,315,827                                            

(1) Reflects the value of unvested equity awards granted through the NSTAR 2007 Long Term Incentive Plan, including those
granted under the executive retention award agreements.

(2) Reflects the value of all unvested equity awards granted through the NSTAR 2007
Long Term Incentive Plan except for grants made under the executive retention award agreements.

(3) Reflects the value of all benefits
contained within the executive Change In Control Agreements except for awards made under the executive retention award agreements.

Payments Made Upon Termination of Employment

Executives do not participate in a formal severance program. In the event of termination of employment, severance benefits are determined on a case by case basis.

Payments Made Upon Death or Disability

Under the terms of the NSTAR 2007 Long Term Incentive Plan, unvested option awards, deferred share awards and performance share unit awards made under the
Plan immediately vest upon death or total and permanent disability. The cash value of option and deferred share awards that would have vested if death or total and permanent disability occurred at December 31, 2011 for each of the Named
Executive Officers are set forth above.

Mr. May is entitled to benefits under certain company-owned and term life insurance policies. As
of December 31, 2011, Mr. Mays beneficiary would have been entitled to a payment of $5.8 million under these policies.

Payments Upon a Change in Control

Under
the terms of the NSTAR 2007 Long Term Incentive Plan and the Change in Control Agreements described below, all unvested awards (except awards granted after the October 16, 2010 execution of the merger agreement with Northeast Utilities)
immediately vest upon a change in control. The definition of change in control is the same as that used for the Change in Control Agreements described below. The cash value of equity awards that would have vested if a change in control had occurred
at December 31, 2011



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##### Table of Contents

for each of the Named Executive Officers is set forth above. The merger of the Company into Northeast Utilities shall constitute a change in control under both the NSTAR 2007 Long Term Incentive
Plan and the Change in Control Agreements.

Payments Upon a Change in Control and Termination of Employment

During 2011, each of the Named Executive Officers was a party to a Change in Control Agreement, which provides severance benefits in the event of certain
terminations of employment following a change in control. These benefits are summarized below. A change in control is defined to include the acquisition of more than 50% of NSTARs Common Shares, NSTARs current Trustees (or their
designated successors) ceasing to be a majority of the NSTAR Board, a consolidation, merger or other reorganization or sale or other disposition of all or substantially all of the assets of NSTAR (other than certain defined transactions), or
approval by NSTARs Shareholders of a complete liquidation or dissolution of NSTAR.

The Change in Control agreements are
double-trigger agreements. They provide that if within 24 months following a change in control, the executives employment was to be terminated other than for cause or the executive was to terminate his or her employment for good
reason (these terms are defined in the next paragraph), the executive would receive severance pay in an amount equal to three times the sum of his or her annual base salary at the rate in effect immediately prior to the date of termination or
immediately before the change in control, whichever is higher, plus an amount equal to three times his or her actual bonus under our annual incentive bonus plan paid during the most recently completed fiscal year, or three times his or her target
bonus awards under the annual incentive bonus plan for the fiscal year in which the termination occurs, whichever is higher. In addition, the agreements provide for a pro-rated target bonus and long term compensation payment for the year in which
the termination occurs, the immediate vesting of any awards and payment of deferred compensation amounts upon such termination and payments equal to the benefit the executive would have received under NSTARs retirement plans, assuming the
executive was vested and remained employed for an additional three years. For three years following any such termination of employment, the executive would be entitled to participate in all welfare plans provided by NSTAR. The current agreements
further provide for a gross-up payment under which, if amounts paid under such agreements would be subject to a federal excise tax on excess parachute payments, NSTAR would pay the executive an additional amount, so that
after payment of all such taxes by the executive, the executive will have received the amount otherwise payable in the absence of any such taxes. The Company has discontinued the practice of providing for such gross-up payments in Change in Control
agreements for newly-elected executives.

The term cause as used in the agreements means commission of a felony or gross neglect
of duty, conviction of a crime involving moral turpitude, or willful failure to perform duties. The term good reason means a diminution in the executives responsibilities or the assignment to the executive of duties inconsistent
with his prior responsibilities, reduction in compensation or benefits, or relocation outside of the greater Boston metropolitan area.

Trustee Compensation

2011 Trustee
Compensation.Each trustee who is not an employee of NSTAR receives an annual Board retainer of $125,000; $50,000 paid in cash and $75,000 paid either in cash or, at the election of the trustee, in NSTAR Common Shares.
Non-employee Trustees who are also members of the Executive Committee receive an annual retainer of $5,000. The Chairs of the Board Governance and Nominating and Executive Personnel Committees and the Presiding Trustee receive an additional annual
retainer of $5,000, and the Chair of the Audit, Finance and Risk Management Committee receives an additional annual retainer of $13,000. Members of the Audit, Finance and Risk Management Committee, with the exception of the Chair, receive an
additional annual retainer of $3,000. Trustees who are not employees of NSTAR receive $1,500 for attendance in person at each Board and Committee meeting and $750 for participating in such a meeting by telephone. Trustees may elect to defer part or
all of their fees into deferred accounts pursuant to NSTARs Trustees Deferred Plan. Participants may select publicly-traded securities and mutual funds as investments for cash compensation deferred under the Plan. The additional retainer
in Common Shares is credited to the deferred compensation trust account established under the Plan, which is payable upon retirement from the Board.



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##### Table of Contents

2011 TRUSTEE COMPENSATION



|                      |  |                                 |        |  |                                     |  |        |                             |  |  |           |  |  |  |         | 
|--------------------- |  | ------------------------------- | ------ |  | ----------------------------------- |  | ------ | --------------------------- |  |  | --------- |  |  |  | ------- | 
|Name                  |  | Fees Earnedor Paidin Cash(1)($) |        |  | Fees Earnedor Paidin Stock(1)(2)($) |  |        | All
OtherCompensation(3)($) |  |  | Total ($) | 
|Gary L. Countryman    |  |                                 | 82,500 |  |                                     |  | 75,000 |                             |  |  |           |  |  |  | 157,500 | 
|Thomas G. Dignan, Jr. |  |                                 | 87,000 |  |                                     |  | 75,000 |                             |  |  |           |  |  |  | 162,000 | 
|James S. DiStasio     |  |                                 | 82,250 |  |                                     |  | 75,000 |                             |  |  |           |  |  |  | 157,250 | 
|Charles K. Gifford    |  |                                 | 87,000 |  |                                     |  | 75,000 |                             |  |  | 3,500     |  |  |  | 165,500 | 
|Matina S. Horner      |  |                                 | 91,250 |  |                                     |  | 75,000 |                             |  |  |           |  |  |  | 166,250 | 
|Paul A. La Camera     |  |                                 | 80,750 |  |                                     |  | 75,000 |                             |  |  | 2,500     |  |  |  | 158,250 | 
|William C. Van Faasen |  |                                 | 81,500 |  |                                     |  | 75,000 |                             |  |  |           |  |  |  | 156,500 | 
|Gerald L. Wilson      |  |                                 | 80,750 |  |                                     |  | 75,000 |                             |  |  |           |  |  |  | 155,750 | 



|(1) | The annual Board retainer equals $125,000; $50,000 in cash and $75,000 either in cash or, at the election of the trustee, in NSTAR Common Shares.
|--- | -------------------------------------------------------------------------------------------------------------------------------------------------



|(2) | This column reflects the grant date fair value of the NSTAR Common Shares delivered to the named Trustees during 2011 in settlement of fees earned or paid in stock.
|--- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(3) | Reflects matching of charitable contributions.
|--- | ----------------------------------------------



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##### Table of Contents

Item 12  Security Ownership of Certain Beneficial Owners and
Management and Related Stock Matters

The following table sets forth the number of NSTAR Common Shares beneficially owned as of
March 1, 2012 by all five percent Shareholders, by each trustee and by each named executive officer (as such item is defined in Item 402(a)(3) of Regulation S-K of the Exchange Act) of NSTAR, as well as all of NSTARs
Trustees and executive officers as a group. Except as indicated below, all of the shares listed are held by the persons named with both sole voting and investment power.



|                                                            |  |                                                        |           |  |                                                      |  |       |  
|----------------------------------------------------------- |  | ------------------------------------------------------ | --------- |  | ---------------------------------------------------- |  | ----- | -
|                                                            |  | Number ofNSTARCommon SharesBeneficially Owned(1)(2)(3) |           |  | Percentage ofNSTARCommon SharesBeneficially Owned(4) | 
|5% Shareholder                                              |  |                                                        |           |  |                                                      |  |       |  
|BlackRock, Inc.
40 East 52nd Street
New York, NY 10022      |  |                                                        | 6,534,724 |  |                                                      |  | 6.308 | %
|                                                            |  |                                                       
|Trustees and Named Executive Officers                       |  |                                                        |           |  |                                                      |  |       |  
|Gary L. Countryman                                          |  |                                                        | 40,993    |  |                                                      |  | *     |  
|Thomas G. Dignan, Jr.                                       |  |                                                        | 78,224    |  |                                                      |  | *     |  
|James S. DiStasio                                           |  |                                                        | 5,105     |  |                                                      |  | *     |  
|Charles K. Gifford                                          |  |                                                        | 34,697    |  |                                                      |  | *     |  
|Douglas S. Horan                                            |  |                                                        | 248,990   |  |                                                      |  | *     |  
|Matina S. Horner                                            |  |                                                        | 40,096    |  |                                                      |  | *     |  
|James J. Judge                                              |  |                                                        | 275,494   |  |                                                      |  | *     |  
|Paul A. La Camera                                           |  |                                                        | 25,351    |  |                                                      |  | *     |  
|Thomas J. May                                               |  |                                                        | 1,950,870 |  |                                                      |  | 1.883 | %
|Joseph R. Nolan, Jr.                                        |  |                                                        | 84,126    |  |                                                      |  | *     |  
|Werner J. Schweiger                                         |  |                                                        | 466,251   |  |                                                      |  | *     |  
|William C. Van Faasen                                       |  |                                                        | 18,835    |  |                                                      |  | *     |  
|Frederica M. Williams                                       |  |                                                        | 0         |  |                                                      |  | *     |  
|Gerald L. Wilson                                            |  |                                                        | 30,883    |  |                                                      |  | *     |  
|All Trustees and executive officers as a group (16 persons) |  |                                                        | 3,402,664 |  |                                                      |  | 3.285 | %



|(1) | Includes the following number of Common Shares that each of the Named Executive Officers has the right to acquire within 60 days of March 1, 2012 upon the exercise
of outstanding stock options: Mr. May, 1,183,667 shares; Mr. Judge, 127,000 shares; Mr. Horan, 121,667 shares; Mr. Schweiger, 334,667 shares; and Mr. Nolan, 25,000 shares; all executive officers as a group, 1,839,834 shares.
|--- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(2) | Includes the following number of Common Shares credited under NSTARs Deferred Compensation Plan: Mr. May, 607,786 shares; Mr. Judge, 80,460 shares;
Mr. Horan, 97,890 shares; Mr. Schweiger, 81,955 shares; and Mr. Nolan, 35,542 shares; all executive officers as a group, 916,291 shares. Participants in the Deferred Compensation Plan may instruct the Plan trustee to vote NSTAR Common
Shares held in a Rabbi trust in accordance with their allocable share of such deferrals, but have no dispositive power with respect to shares held in the Plans trust. The total number of NSTAR Common Shares held in the trustee brokerage and
individual accounts on behalf of each trustee is as follows: Mr. Countryman, 32,840 shares; Mr. Dignan, 68,254 shares; Mr. DiStasio, 5,105 shares; Mr. Gifford, 29,977 shares, Dr. Horner, 31,950 shares; Mr. La Camera,
25,351 shares; Mr. Van Faasen, 18,835 shares and Dr. Wilson, 24,602 shares.
|--- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(3) | Includes the following number of Common Shares held in the NSTAR Savings Plan: Mr. May, 45,223 shares; Mr. Judge, 15,540 shares; Mr. Horan, 2,751 shares;
Mr. Schweiger, 5,304 shares; and Mr. Nolan, 10,784 shares; all executive officers as a group, 97,411 shares.
|--- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(4) | * denotes that beneficial ownership is less than one percent.
|--- | -------------------------------------------------------------



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Section 16(a) Beneficial Ownership Reporting Compliance

Based upon a review of the forms furnished to the Company and written representations from the Trustees and executive officers, the
Company believes that all Section 16(a) filing requirements applicable to its Trustees and executive officers were complied with for 2011, with the exception of one report filed late by each of Messrs. Judge and Nolan, which
reported the sale 
of shares to satisfy tax withholding obligations or settlement of phantom shares by the Company in cash.

Item 13
  Certain Relationships and Related Transactions and Trustee Independence

Board Independence.  The
Corporate Governance Guidelines provide that a substantial majority of the Companys Trustees should be independent, non-employee Trustees. Each year, the Board Governance and Nominating Committee affirmatively determines the independence of
each trustee and nominee for election as a trustee in accordance with the Corporate Governance Guidelines. To assist the Board in determining trustee independence, the Board has adopted independence standards that are set forth in detail in the
Corporate Governance Guidelines. These standards are consistent with the listing standards of the NYSE. In general, absent other considerations, the Board will consider a trustee to be independent if he or she is not disqualified from being
independent under Section 303A.02 (b) of the NYSE Listed Company Manual and he or she does not have, and in the previous three years has not had, and has no immediate family member that has or has had within the previous three years, a
Material Relationship with the Company. The following relationships, either individually or as a director, executive officer, employee or general partner with, or significant equity holder (in excess of five percent) of a company or a
firm, are considered Material Relationships: (i) a customer or supplier of the Company or its subsidiaries where the amount of compensation paid to or received from such customer or supplier in any single fiscal year exceeds the greater of $1
million or two percent of such customers or suppliers consolidated gross revenues; or (ii) a tax-exempt entity that receives contributions from the Company or its subsidiaries during a calendar year in excess of the greater of $1
million or two percent of the total donations received by such entity. In the case of an immediate family member of a trustee, where the only relationship with such company or firm is that of an employee, the relationship is not considered material.

In addition, the Board Governance and Nominating Committee annually confirms that the members of the Audit, Finance and Risk Management
Committee have not received, directly or indirectly, any fees from the Company other than compensation as a member of the Board of Trustees and the Boards Committees, and are not otherwise affiliated with the Company as that term is defined in
the Securities and Exchange Commissions (SEC) regulations.

At its meeting on January 23, 2012 the Board Governance and
Nominating Committee determined that Mr. Countryman, Mr. Dignan, Mr. DiStasio, Mr. Gifford, Dr. Horner, Mr. La Camera, Mr. Van Faasen and Dr. Wilson are independent, consistent with the requirements of the
Corporate Governance Guidelines and the NYSE Listed Company Manual. In making this determination, the Board considered the following relationships: Mr. La Camera, Mr. Countryman, Mr. Gifford and Mr. Van Faasen are, or in the past
three years have been affiliated with entities that have the following business relationships, respectively, with the Company. The Company purchased advertising on WBUR, obtains excess layer workers compensation insurance and related administrative
services from Liberty Mutual Insurance Company, has lending and investment banking relationships with Bank of America and obtains a majority of its health insurance services from Blue Cross Blue Shield of Massachusetts. In addition, NSTAR provides
electric distribution service to entities that are or formerly were affiliated with Board members to the extent they are within NSTARs exclusive service territory. These relationships have been deemed to constitute immaterial relationships,
because these are ordinary course of business relationships made on an arms-length basis and the amount paid to or received from such entities in 2011 was significantly below the two percent threshold established under the Corporate Governance
Guidelines. In addition, the Committee has determined these relationships and transactions do not constitute related party transactions, as none of the Trustees has a direct or indirect material interest in the respective transactions. All members
of the Audit, Finance and Risk Management Committee are also independent for the purposes of Section 10A-3 of the Securities Exchange Act of 1934. Mr. May does not meet the independence criteria set out in the Corporate Governance
Guidelines because he is the Companys Chief Executive Officer.



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NSTAR Policy on Related Persons Transactions.  Under the terms of the Board
Governance and Nominating Committees NSTAR Related Persons Transaction Policy, the Company will not engage in transactions in an amount exceeding $120,000 in any year with related persons who have a direct or indirect material interest in the
transaction unless the Committee determines that the transaction is on terms comparable to those that the Company could obtain in an arms-length transaction with an unrelated third party. The term related person means: any of the senior executive
officers, including the Named Executive Officers, or members of the Board of Trustees of the Company or their immediate family members; Shareholders owning in excess of five percent of the Companys outstanding shares; and entities in which any
of the persons or entities described above hold the position of general partner or similar position, director, or owner of more than a five percent ownership interest. The Committee determines whether a related party has a direct or indirect
material interest in a transaction by considering factors such as the nature of the related partys interest in the transaction and the relationship of the related person to the other party to the transaction; the material terms of the
transaction, including the amount involved; the importance of the transaction to the interest of the related person; whether the interest of the related person in the transaction would impair the judgment of the trustee or officer to act in the best
interests of the Company; and any other matter that the Committee deems appropriate.

Item 14 
Principal Accounting Fees and Services

AUDIT AND RELATED FEES

The following sets forth fees incurred by NSTAR and its subsidiaries during 2011 and 2010 for services provided by PricewaterhouseCoopers LLP, the
Companys independent registered public accountants:



|     |  |            |           |  |                    |   |         |          |  |   |                |  |  |   |       | 
|---- |  | ---------- | --------- |  | ------------------ | - | ------- | -------- |  | - | -------------- |  |  | - | ----- | 
|     |  | Audit Fees |           |  | Audit Related Fees |   |         | Tax Fees |  |   | All Other Fees | 
|2011 |  | $          | 1,584,400 |  |                    | $ | 60,000  |          |  | $ | 0              |  |  | $ | 3,600 | 
|2010 |  | $          | 1,518,500 |  |                    | $ | 173,000 |          |  | $ | 0              |  |  | $ | 3,000 | 

Audit Fees  Audit Fees for 2011 and 2010 were for all audit services related to the Companys financial
statements and its internal controls in accordance with the standards of the Public Company Accounting Oversight Board. This category also includes fees related to services provided in connection with the Companys financing transactions,
including the preparation of comfort letters and consents. During 2011, the services also included review and consent for the definitive proxy statement filed in conjunction with the special shareholders meeting held to approve the pending
merger with Northeast Utilities.

Audit Related Fees  During 2011, audit related fees represented services in connection with NSTAR
Electric Companys Federal Smart Grid grant. In 2010, these fees represented pre-announcement due diligence services related to the pending merger with Northeast Utilities.

All Other Fees  All Other Fees for 2011 and 2010 related to an annual license fee for online accounting research services.

The Audit, Finance and Risk Management Committees policy is to pre-approve all audit and non-audit services provided by the Companys independent registered public accountants annually. The
Audit, Finance and Risk Management Committee has delegated authority to the Committees Chair to pre-approve such services in cases where a meeting of the full Committee is not feasible. All audit and non-audit services for which the Company
has engaged PricewaterhouseCoopers LLP during 2011 and 2010 were either pre-approved by the Audit, Finance and Risk Management Committee or the Chair of the Audit, Finance and Risk Management Committee.

PART IV

Item 15  Exhibits, Financial Statement Schedules

EXHIBIT INDEX



|            |  |                                                                                                                                       
|----------- |  | --------------------------------------------------------------------------------------------------------------------------------------
|Exhibit No. |  | Description of Exhibits                                                                                                               
|            | 
|31.1        |  | Certification Statement of Chief Executive Officer of NSTAR pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 (filed herewith)
|            | 
|31.2        |  | Certification Statement of Chief Financial Officer of NSTAR pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 (filed herewith)



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##### Table of Contents

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.



|                    |  |  |  |                    |  |                                                                                      
|------------------- |  |  |  | ------------------ |  | -------------------------------------------------------------------------------------
|                    |  |  |  | NSTAR (Registrant)
|                    |  |  | 
|Date: April 9, 2012 |  |  |  | By:                |  | /S/    R. J. WEAFER,
JR.                                                             
|                    |  |  |  |                    |  | Robert J. Weafer, Jr.                                                                
|                    |  |  |  |                    |  | Vice President, Controller and Chief Accounting Officer(Principal Accounting 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 as of the
9thday of April 2012.



|                                                   |  |                                                                                         
|-------------------------------------------------- |  | ----------------------------------------------------------------------------------------
|Signature                                          |  | Title                                                                                   
|                                                   | 
|/S/    THOMAS J.
MAY Thomas J. May                 |  | Chairman, President, Chief Executive Officer and a Trustee (Principal Executive Officer)
|                                                   | 
|/S/    JAMES J.
JUDGE James J. Judge               |  | Senior Vice President and Chief Financial Officer(Principal Financial Officer)          
|                                                   | 
|/S/    G. L. COUNTRYMAN
Gary L. Countryman         |  | Trustee                                                                                 
|                                                   | 
|/S/    THOMAS G. DIGNAN,
JR. Thomas G. Dignan, Jr. |  | Trustee                                                                                 
|                                                   | 
|/S/    JAMES S.
DISTASIO James S. DiStasio         |  | Trustee                                                                                 
|                                                   | 
|/S/    CHARLES K.
GIFFORD Charles K. Gifford       |  | Trustee                                                                                 
|                                                   | 
|/S/    MATINA S.
HORNER Matina S. Horner           |  | Trustee                                                                                 
|                                                   | 
|/S/    PAUL A. LA
CAMERA Paul A. La Camera         |  | Trustee                                                                                 
|                                                   | 
|/S/    WILLIAM C. VAN
FAASEN William C. Van Faasen |  | Trustee                                                                                 
|                                                   | 
|/S/    FREDERICA M.
WILLIAMS Frederica M. Williams |  | Trustee                                                                                 
|                                                   | 
|/S/    G. L. WILSON
Gerald L. Wilson               |  | Trustee                                                                                 



30