Electric Resource Plan 

Annual Progress Report 

for 

Tri-State Generation and Transmission 

Association, Inc. 

Submitted to: 

Colorado Public Utilities Commission 

October, 31 2012 
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Tri-State Generation and Transmission Association, Inc. 1

Background 

In accordance with the stipulated resource planning process approved by Commission Decision No. C10-0101, in 

Docket No. 09I-04IE and Rule 3618 (a) of the Colorado Public Utilities Commission's Rules Regulating Electric 

Utilities, Tri-State Generation and Transmission Association, Inc. (Tri-State) submits the following Annual Progress 

Report (APR) to the Public Utilities Commission of Colorado (Commission). The APR includes the required 

information listed in Section 3, Subsection 4 of the stipulated resource planning process and also addresses public 

comments received by Tri-State. 

Tri-State filed its Electric Resource Plan (ERP) on November 30, 2010 that initiated Docket No. 10M-879E. On 

January 18, 2011, Tri-State presented the results of its ERP to the Commission at an Informational Meeting and 

answered questions from the Commission as part of Docket No. 10M-879E. By Commission Decision No. C11-

0109 mailed January 31, 2011, the Commission solicited additional public comment regarding Tri-State's ERP and 

required these comments to be filed by February 23, 2011. Tri-State then filed a response to these comments on 

May 2, 2011, in accordance with Commission Decision No. C11-0341, dated March 31, 2011. The Commission 

issued its final decision in the docket, Commission Decision No. C11-0721, on July 5, 2011. 

To support this 2012 APR to the 2010 ERP, Tri-State held a public meeting on July 27, 2012 to provide an 

opportunity for public input. Six members of the public attended the meeting in person and seven viewed the 

webcast of the meeting. Tri-State presented its updated load forecast, pricing, and resource need projections and 

provided time for public comment. The public was also encouraged to submit written comments through TriState's resource planning website. 

Written comments were received by Tri-State on August 31, 2012 representing the interests of Western 

Resource Advocates (WRA), Colorado Environmental Coalition, Environmental Defense Fund, High Country 

Citizens' Alliance, Powder River Basin Resource Council, and San Juan Citizen's Alliance. Additional comments 

were received from Clean Energy Action on September 4, 2012. This APR addresses those written and oral 

comments that are within the scope of the resource planning process approved by the Commission. All 

comments that were received were considered in the resource planning process. 

Per the approved resource planning process, this annual progress report contains the following sections: 

A. An updated annual electric demand and energy forecast; 

B. An updated evaluation of existing resources; 

C. An updated evaluation of planning reserve margins and contingency plans; 

D. An updated assessment of need for additional resources; 

E. An updated report of the utility’s action plan; 

F. An updated report on resource scenario modeling; 

G. An updated report on the utility’s efforts to give the fullest possible consideration to the cost-effective 

implementation of new clean energy and energy-efficient technologies (as defined in Section 1, subsection 

8) in its consideration of generation acquisitions; and 

H. Any material changes to its resource plan or action plan. 

Additional data can be found in the attached Appendices: 

 Appendix A: Load Forecast Data 

 Appendix B: Scenario Modeling Data 

 Appendix C: Total Tons of Emissions per year and Water Consumed per year by each Generating Unit 

Summary 

Tri-State has updated its 2011 APR to account for changes in input forecasts and improvements in modeling. The 

APR intends to show the effect of changes since the last update and is not intended to serve as a new ERP. To the 
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Tri-State Generation and Transmission Association, Inc. 2

extent issues addressed in the ERP have not changed, they are not addressed in this APR. Significant modeling 

decisions made in the 2010 ERP process are continued in this APR. Tri-State continues to make incremental 

improvements to its modeling and resource planning process. It is important to remember that the resource 

planning process is not intended to prescribe or eliminate any option outside of the resource acquisition period. 

Tri-State made two significant changes to its generation resource portfolio since the last APR. First, Tri-State 

completed its acquisition of Thermo Cogeneration Partnership (TCP) which was the owner of the 272 MW Fort 

Lupton Combined Cycle Power Plant. This acquisition will provide additional combined cycle capacity in 2019 at 

the conclusion of the existing power purchase agreements associated with that facility. Next, Tri-State entered 

into a power purchase agreement for 67.2 MW of generation from the Colorado Highlands Wind project. This 

project is scheduled to come online in 2012 and will provide for Tri-State's energy needs in support of its 

Member-Systems' Renewable Energy Standard requirements. In addition to these generation changes, Tri-State has 

updated forecasts of electric demand, energy and fuel prices as well as capital costs for potential generation 

resources. These data are used in modeling runs in the APR. The results of the updated modeling runs are 

discussed below. 

Those components of the ERP that entailed evaluation of existing resources, reserve margins, and contingency 

plans, as well as assessment of additional resources and the Action Plan, remain largely unchanged and are 

discussed below. Lastly, in this APR Tri-State provides an update of the various programs and projects it is 

involved in that are consistent with its commitment to giving the fullest possible consideration to cost-effective 

new clean energy and energy efficient technologies. 

A. An Updated Annual Electric Demand and Energy Forecast 

An electric demand and energy forecast and methodology for the entire Tri-State system and by region was 

provided in Section II of the 2010 ERP and updated in the 2011 APR. The updated forecast indicates that TriState's Member load continues to grow but at a slower rate than was projected in the previous update. Tri-State's 

Member load peak demand grew 2.6 percent in 2011 and is projected to grow at an average of 1.6 percent per 

year through the resource acquisition period (2010-2016). Similarly, Tri-State's Member energy sales grew 2.9 

percent in 2011 and are projected to increase an average of 1.4 percent per year through the resource acquisition 

period. The change in load forecast reflected in this APR can be seen in Figure 1. More detailed load data 

including regional data can be found in Appendix A. There have been no significant changes in forecasting 

methodology since the publication of the 2010 ERP. 
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Figure 1 - Energy Forecast for 2011 and 2012 Update with Upper and Lower 90% Confidence Limits

B. An Updated Evaluation of Existing Resources 

An updated energy and capacity breakdown of Tri-State's generation for 2011 is provided below in Figures 2 and 

3. A comparable breakdown was provided in the initial ERP for 2009 in Figures 5 and 6 and in last year's APR for 

2010 in Figures 2 and 3. Notable changes to the sources of energy include a significant increase in the amount of 

energy received from renewable resources since 2010 with the addition of the Kit Carson wind project and the 

Cimarron solar project as well as member renewable generation projects. Further, the amount of energy from 

hydropower increased from 12% in 2010 to almost 17% in 2011 due to greater than average run-off. In addition, 

due to lower gas prices, there was an increase in the amount of market purchases, from 6% in 2010 to 7.9% in 

2011. As a result, the amount of energy from coal was reduced from 70% in 2010 to 64% in 2011. 

Differences in the capacity from 2010 reflect the purchase of the J. M. Shafer Station (discussed below), which is 

shown by the decrease in gas tolling and the increase in Tri-State gas as a percentage of overall capacity. 

Renewable capacity as a percentage of overall Tri-State available capacity did not increase for this year because the 

Kit Carson and Cimarron projects were included in the 2010 charts; however, since both of these projects were 

commercialized in late 2010, the full contribution to the Tri-State energy mix did not show up until 2011. 
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Tri-State Generation and Transmission Association, Inc. 4

Figure 2 - 2011 Energy by Resource Figure 3 - 2011 Capacity by Resource 

In the 2010 ERP and as updated in the 2011 APR, Tri-State provided a discussion of the characteristics of each 

existing generation unit, future facilities, and power purchase agreements with utilities and independent power 

producers. The characteristics of these units are unchanged except as discussed in this section. 

Fort Lupton Combined Cycle Power Plant 

In 2011, Tri-State acquired 100 percent of the equity of Thermo Cogeneration Partnership (TCP) which 

included the gas-fired, combined cycle power plant at Fort Lupton. This transaction has not altered the 

power purchase agreement at this time with TCP, however, Tri-State will now list the facility as an 

existing unit with a start date of July 1, 2019, and a capacity of 312 MW reflecting the current rating of 

272 MW plus an approximate 40 MW capacity increase through potential turbine upgrades. As TCP will 

be a wholly-owned subsidiary, Tri-State will now list the Public Service Company of Colorado (Public 

Service Company) power purchase from the Ft. Lupton facility under its contingent sales. Public Service 

Company purchases 122 MW from the facility through June 30, 2019. The name of this facility has been 

changed to the J. M. Shafer Station (Shafer). 

Colorado Highlands Wind 

 

The Colorado Highlands Wind project is under construction and scheduled to be online in late 2012. 

The 67.2 MW wind farm is owned and operated by Colorado Highlands Wind. Tri-State is purchasing all 

of the output through a 20-year power purchase agreement. 

C. An Updated Evaluation of Planning Reserve Margins and 

Contingency Plans 

Tri-State provided a discussion of planning reserve margins and contingency plans in Section III of the 2010 ERP. 

Tri-State continues to develop plans based on a 15 percent reserve margin. Tri-State's participation in the Rocky 

Mountain Reserve Group, Southwest Reserve Sharing Group, and several "Hazard Sharing" arrangements provide 

additional support for reliable operations over the resource acquisition period. 

Tri-State stated in the 2010 ERP that it does not expect a capacity shortfall over the acquisition period unless 

there was a significant increase in load or existing resources were to become unavailable. The updated forecast 

does not represent a significant change to this situation. 
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D. An Updated Assessment of Need for Additional Resources 

Tri-State's need for additional resources was presented in Section I of the 2010 ERP and part D of the 2011 APR. 

Figures 4 and 5 provide an update based on the 2012 load forecast and potential products and services for demand 

reduction and energy shaping. 

Traditional utility planning requires that a comparison of demand forecasts, existing generation and purchase/sales 

commitments be developed to show a forecast for additional resources as required to maintain appropriate 

reserve margins. 

The assumptions for this "capacity planning" scenario are as follows: 

 total obligations are defined as firm load, firm contract sales, operating reserves, and planning reserves; 

 all existing purchase and sales contracts are assumed to expire on their terms (except for the Western 

Area Power Administration purchases which are assumed to extend through the planning horizon); 

 no planned capacity changes for existing plants (except planned upgrades to the J.M. Shafer turbines); 

 no plant retirements within the modeling period; 

 no spot purchases or sales are included; 

 Demand Side Management is at the forecasted levels of Tri-State's Products and Services program; and 

 renewable capacity assumptions are as described later in this section. 

This traditional load/resource balance is shown as Figure 4, and indicates the timing of new generation for the 

median load forecast scenario. Figure 5 shows this same load/resource balance with the inclusion of Tri-State's 

forecast for use of its Products and Services Program. For all modeling scenarios it assumes that use of the 

Products and Services Program is at the forecasted levels. 

Figure 4 - Updated Load/Resource Position not including Products and Services
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Figure 5 - Updated Load/Resource Position including Products and Services 

These figures indicate that no new capacity resources are required to serve firm load and obligations through 2026 

for the median load forecast case. This resource need has moved back from 2023 in the 2011 APR primarily due 

to slower load growth. 

It is important to note that other factors may drive the need for additional generation. First, Renewable Energy 

Standards in the states where Tri-State's Member-Systems are located can cause the need for additional 

generation. For the Tri-State system, this forecast is shown in Figure 6 and discussed in more detail below. 

Second, limitations on fleet-wide carbon emissions (i.e., a “carbon cap”) may require new generation to facilitate 

fuel switching from coal to gas and/or adding renewable generation. This situation was explored and is 

summarized in the description of the Basic Default Scenario – Governor’s Climate Action Plan and Basic Default 

Scenario – Governor’s Climate Action Plan (Limited Wind) in Section IV of the 2010 ERP and again in Appendix B 

of this filing. Third, under some high carbon cost and high fuel cost scenarios, new generation is required to 

minimize the cost of power and energy deliveries to customers, and this generation expansion is driven by 

economics and environmental policy, not by a load/resource comparison. Finally, for some scenarios where high 

levels of intermittent renewable generation are developed, additional generation may be required to provide 

regulation and maintain system stability. This generation requirement is typically met by reciprocating engines or 

by gas turbines, potentially configured as a combined-cycle gas facility with favorable dispatch characteristics. 

As in the 2011 APR, one factor that could influence Tri-State's resource needs is large load growth beyond what is 

considered in the load forecast. New oil and natural gas production in Tri-State's service territory could have a 

large but unknown effect on Tri-State's demand and energy forecast. Any addition of new large industrial loads 

could also cause Tri-State to add resources sooner than is currently forecasted. As potential projects become 

more developed they will be incorporated into the long term demand and energy forecast. Tri-State has modeled 

a scenario with high load growth to simulate these effects; however, the addition of large discrete loads under 

development could cause Tri-State's total load to exceed the high load growth scenarios. 

Tri-State’s capacity position generally declines in the 2013 through 2015 timeframe due to the Public Service 

Company natural gas turbine tolling agreements, but remains adequate under the median economic load forecast 
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scenario. The capacity position again improves in 2016 and 2017 with the expiration of the Public Service 

Company turbine tolling agreements and the expiration of a Public Service Company long-term contingent sale. 

Renewable Energy Standards 

Tri-State’s Members in Colorado and New Mexico are required to comply with state Renewable Energy Standards 

(RES). The Colorado standard requires that 1 percent of retail energy sales be served by renewable generation in 

2010, growing to a 10 percent level in 2020 and beyond. Similarly, the New Mexico standard begins in 2015 with 5 

percent of retail energy sales served by renewable sources, and grows to 10 percent by 2020. 

New in this APR is the inclusion of the Colorado Highlands Wind facility in Tri-State's renewable portfolio 

accounting. This facility consists of forty-two, 1.6 MW wind turbines with a total installed generating capacity of 

67.2 MW. Tri-State will purchase the output of this facility under a 20-year purchased power agreement that 

commences in late-2012.

As shown in Figure 6, Tri-State has procured sufficient renewable generation through the Cimarron solar project, 

the Kit Carson wind power project, Member System local renewable projects, and the Colorado Highlands Wind 

project to comply with both the Colorado and New Mexico RPS/RES requirements through 2019. By 2020 TriState will need to acquire additional renewable energy either through self-build generation, power purchase 

agreements, or the purchase of renewable energy credits. As demonstrated by the Colorado Highlands Wind 

project, however, Tri-State may acquire additional renewable generation ahead of the RES requirements based on 

economics. 

If Tri-State were to satisfy the additional renewable energy needs for 2020 with only wind generation, this would 

require approximately 200 MW of additional wind generation. If Tri-State were to use photovoltaic solar to 

supply the additional renewable energy, it would require approximately 120 MW of photovoltaic solar or a facility 

about four times the size of the Cimarron facility, assuming current multipliers remain in effect. 
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Figure 6 - Renewable Resource Requirements Needed for RES Compliance 

Assessment of Need for Additional Resources During the Planning Period 

Under the assumptions of growth defined by the median load forecast and no changes to existing units or contract 

terms, Tri-State projects a need for additional renewable resources to meet the Colorado and New Mexico RES, 

and additional capacity to meet planning reserve margins by 2026. Scenario modeling has been developed to 

project the timing and nature of resources. 

Tri-State has positioned itself to have viable options to meet future needs that may include demand side 

alternatives, natural gas generation, renewable generation or baseload generation, including coal technology. No 

firm commitments have been made at this time as to the timing, technology, size or location of new generation 

projects. 

Public policy debate continues regarding treatment of carbon, renewable requirements, renewable incentives, 

techniques and regulations for extraction of underground fossil fuels, nuclear development, transmission 

development, demand response and energy efficiency and other important energy-related matters. Public policy 

decisions have the potential to substantially affect the decision-making backdrop for resource planning. As a result, 

it is important to continue to develop a slate of flexible resource options (generation, transmission, market and 

demand side) to support future decisions. 
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E. An Updated Report of the Utility’s Action Plan

Summary 

Tri-State's Action Plan was provided in Section V of the 2010 ERP. Integral parts of the Action Plan are the 

projects and programs that constitute Tri-State's commitment to giving the fullest possible consideration to costeffective and new clean energy and energy efficient technologies. As in the 2011 APR, these programs are 

discussed below in Section G. 

Tri-State has made significant progress in many areas discussed in the 2010 Action Plan. 

Tri-State discussed the need to pursue additional renewable generation within the Resource Acquisition period in 

order to meet the Colorado and New Mexico RES. The agreement to purchase the capacity and energy from the 

Colorado Highlands Wind project will provide enough renewable energy to meet or exceed RES requirements 

until 2020. 

Tri-State's 2010 Action Plan addressed plans to formulate additional demand response/load management programs 

to offer to Members which they, in turn, may offer to their member-consumers. In 2012 Tri-State developed and 

announced 27 new demand response and energy shaping load-related products and services to its Members 

Systems and their member-owners to help more effectively manage loads, control wholesale costs, meet market 

and operational conditions, and balance resources. These are discussed in more detail below. 

In the 2010 ERP, Tri-State stated that under the identified assumptions additional capacity was not needed until at 

least 2019. In the 2011 APR, primarily due to the acquisition of the J.M. Shafer Station, it was determined that the 

first need for capacity resources was 2023. The current assessment of need indicates that capacity resources will 

not be needed until 2026. This does not mean that the only need for thermal resources is for capacity. The 

scenario simulations indicated some scenarios in which new resources may be built earlier than 2026 to reduce 

energy and system costs, as well as help integrate intermittent resources. The pursuit of resources to reduce 

costs was discussed in the 2010 action plan and this objective was realized by Tri-State in purchasing the output of 

the Colorado Highlands Wind project and the purchase of the J. M. Shafer Station. 

Tri-State has continued work on the areas of modeling improvement discussed in the Action Plan. Some of these 

updates to Tri-State's long term resource planning modeling are discussed in Section F. 

Holcomb II Update 

In the 2010 ERP, Tri-State stated that a balanced approach to resource planning meant maintaining flexible and 

viable options, including the option to build a new unit at the Holcomb Station. Since the 2010 ERP, development 

at that site has largely been unchanged and the option is still viable. 

Tri-State was asked in the input process to specifically model the Holcomb II unit. The APR process is intended to 

be an update and does not involve modeling any specific unit in the planning horizon; however, a similar potential 

unit is included in the expansion planning process. Tri-State similarly maintains several potential sites but does not 

prescribe a timeline for their development within the resource planning process. Tri-State's Board of Directors 

maintains the option to make business decisions for the benefit of its membership, including non-member sales. 

Products and Services 

An ongoing part of Tri-State's Action Plan is the implementation of DSM/EE resources; Tri-State has developed 27 

different demand response (DR) and energy shaping (ES) load-related products and services that it is offering to all 

44 Member Systems, not just those located in Colorado, for them to then offer participation in to their memberowners. These DR and ES products are designed for certain ones to be offered by the 44 Member Systems to 
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Tri-State Generation and Transmission Association, Inc. 10

their residential and small commercial member-owners, their irrigation member-owners, their large commercial 

and industrial member-owners, and for their system enhancements. These products and services are enabled by a 

wholesale rate design change that becomes effective January 1, 2013. 

Tri-State continues to budget funds to pursue EE products in 2012 and will evaluate DSM/EE measures as a way to 

reduce energy requirements as demonstrated in the 2010 ERP process. Progress on Tri-State's existing DSM/EE 

programs is shown in Appendix D. 

Tri-State has been developing and maturing its load-related programs since the 2010 ERP. In early August 2011,

Tri-State held an informational meeting for its Members describing potential products and services related to 

demand side management and demand response that could potentially be made available. Over 55 programs were 

identified in areas related to residential/small commercial load control, irrigation load control, large commercial 

and industrial programs, and distribution system programs (including harvesting distributed generation) that has 

now resulted in the aforementioned 27 DR and ES product offerings. For purposes of modeling in the APR, TriState used the estimates of its 2010 DSM/EE study. This impact has been updated with respect to the system load 

and resource balance, and this effect is shown in Figures 4 and 5. 

F. An Updated Report on Resource Scenario Modeling 

Tri-State addressed scenario modeling in the 2010 ERP process. In total, Tri-State ran twenty-four separate 

scenarios through its multistage resource planning modeling process. For the 2011 APR, Tri-State modeled eight 

scenarios. This 2012 APR again models the same eight scenarios. Some of the scenarios were included based on 

comments received during the 2011 and 2012 input processes. Although not all requested scenarios are part of 

this update, the scenarios chosen offer a clear indication as to the effect of system changes that have occurred 

since the 2011 APR filing. 

Table 1 shows the scenario name, scenario characteristics, and the Present Value of Revenue Requirements 

(PVRR) associated with the simulations. These scenarios share many of the characteristics of the scenarios that 

were run in 2010. Following the methodology used in the last ERP, Tri-State has modeled future generation, 

emissions, and costs for each scenario. Tri-State did not attempt to explicitly model potential emissions 

regulations beyond a forward cost for CO2. Additional costs required to meet current and future environmental 

regulations are included in the economic modeling and in the PVRR. The updated scenario expansion plans for 

thermal and renewable generation can be found in Tables 2 and 3 respectively. 
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Scenario

BAU

BAU 

High 

Load

BAU 

Low 

Load BDS

BDS -

Geo CAP 

limited 

Wind

BDS - 5% 

Coal 

Price 

Growth

BDS -

Max DSM

WRA 

Data

Growth 

Rate Median High Low Median Median Median Median Median

DSM Level

TSGT 

Products 

and 

Services

TSGT 

Products 

and 

Services

TSGT 

Products 

and 

Services

TSGT 

Products 

and 

Services

TSGT 

Products 

and 

Services

TSGT 

Products 

and 

Services

Nexant 

Max Level

Nexant 

High Level

Electric 

Price Median Median Median Environmental Environmental Environmental Environmental Environmental

Gas Price Median Median Median Environmental Environmental Environmental Environmental Environmental

Coal Price Median Median Median Median Median

5% 

Growth 

Above 

Inflation Median

5% 

Growth 

Above 

Inflation

RPS Level Compliance Compliance Compliance Compliance Compliance Compliance Compliance Compliance

Renewable 

Int. Cost $5 $5 $5 $5 $5 $5 $5 $5 

Carbon 

Cost 

Adder 

($/ton) $0 $0 $0 

Forward 

Curve $7.5-

31

Forward 

Curve 

$7.5-31

Forward 

Curve 

$7.5-31

Forward 

Curve 

$7.5-31 

$20 in 

2015 

esc.@6.5%

PVRR 

($Billion) 21.7 24.9 20.1 25.1 26.7 25.9 24.3 30.0

Table 1 - Scenario Descriptions and PVRR 

Internal Consistency of Inputs 

One of the issues raised during the 2010 ERP process and in connection with the 2011 APR was the internal 

consistency of inputs used for modeling in the resource planning process. For this 2012 APR Tri-State focused on 

making these input assumptions internally consistent. For the 2012 APR modeling Tri-State worked with the 

providers of long term price forecasts to isolate the CO2 costs internal to their forecast models. This information 

facilitated the use of consistent assumptions throughout the modeling process. For the 2012 APR we have 

employed differing prices for electricity and natural gas prices that have explicit carbon assumptions embedded, 

and this information is provided in the scenario modeling descriptions in Table 1. 

The cost of carbon assumed for this APR in the BDS scenarios is now consistent with the assumptions used for 

our long term electric and gas price forecast. For the "WRA Scenario," carbon costs assumptions are greater than 

those used in the development of price forecasts, and so there is a lack of consistency in this scenario. These 

carbon costs are not intended to represent all possible environmental expenses as all other environmental 

regulation costs are accounted for in the economic modeling; rather these represent the costs associated with a 

carbon tax or other national policy related to CO2 such as Cap-and-Trade. 

Tri-State has revised its coal price forecasts to incorporate new, plant-specific and mine-specific information and to 

better reflect the market changes seen in coal prices. This information was supplemented with the average linear 
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trend of the historic delivered prices seen at that unit and forward prices for Powder River Basin coal that are 

consistent with the forward prices for electricity and natural gas discussed above. The result of this update was a 

higher coal price forecast, growing at a faster rate when compared to the previous APR. This effect is shown in 

Appendix B, Figure 9. The forecast includes the pricing for the ColoWyo mine which Tri-State purchased in 2011. 

There was a request in the written input for unit specific historical and forecast coal pricing data. This data is 

proprietary: however, the composite data provided shows the coal price forecast changes from 2011. 

Additionally, there has been some confusion among participants in this process related to the composite coal price 

used in previous presentations and documents. Because of the differing ways that this composite cost can be 

calculated the same year has had different values. The data in Figure 9 represents the weighted average based on 

the five year average delivered coal volume. This will be the method used going forward. 

The Electric Power Research Institute (EPRI) Technical Assessment Guide (TAG) provides cost and performance 

data for power plants of various technologies. The TAG has become an industry standard for power plant cost 

and performance information. In the 2012 APR, Tri-State used the TAG for variable O&M costs, estimated forced 

outage rate, estimated maintenance rate and overnight capital costs. Use of the TAG data provides two major 

benefits in Tri-State’s resource planning process. First, the TAG provides consistent financial and economic 

assumptions between the various technologies eliminating any financial or economic bias between the technologies. 

Second, the TAG annual updates provide updated cost analysis that capture technology and market trends allowing 

Tri-State to have the latest technological information. 

The detailed TAG technology information is proprietary and available to EPRI TAG members. However, an EPRI 

public document, Program on Technology Innovation, provides cost and performance parameters that are 

indicative of Tri-State’s potential resource list. 

For the WRA designated scenario analysis, WRA provided updated capital costs to Tri-State on September 28, 

2011 and these values are shown in Table 9. These capital costs were increased to 2012 dollars for use in the 

WRA designated scenario. 

Tri-State added reciprocating natural gas combustion engines to the potential resources. The data for these 

resources came from manufacturer data and data from projects completed by other utilities. When these engines 

are included in the TAG report we will use the TAG assumptions as with the other units. 

To account for differing levels of demand side management programs Tri-State has used the level of demand side 

management and energy efficiency programs as an input variable to the various scenarios. This APR has scenarios 

with various demand side programs including Tri-State's Products and Services Program forecast, as well as the 

"High" and "Max Achievable" forecasts from the Nexant study that Tri-State funded in 2009. 

As in 2010 and 2011, Tri-State has load growth as a variable. The "median" load forecast is based on the best 

available data created from a bottom-up Member-by-Member load forecast. The "high" and "low" load forecasts 

represent two standard deviations above and below the median load forecast, respectively. 

The transmission expansion costs are included for the complete 20-year planning horizon per Section 1, 

Subsection 13.c of the stipulated agreement. In its 2014 APR, Tri-State intends to provide a 20-year transmission 

forecast that will be included in any future ERP filings. Table 10, in Appendix B details the updated transmission 

costs for the eight scenarios modeled, in 2012 dollars. Similar costs were presented in the 2010 ERP and 2011 

APR; however, since the capital costs for comparable scenarios differed not only in timing but in the type of 

resources selected, these transmission costs are not directly comparable. 

The scenario modeling performed for the 2012 APR generally conforms with the timing for additional generation 

that was found in the previous APR. 
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Scenario

20132014201520162017201820192020202120222023202420252026202720282029203020312032

BAU 0 0 0 0 0 0 0 0 0 0 200 0 0 0 0 254 0 0 0 0

BAUHigh 0 0 0 0 314 0 0 0 0 200 0 0 0 314 0 0 0 0 0 0

BAULow 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

BDS 0 0 0 0 0 0 0 0 0 0 0 200 0 0 0 0 0 100 0 100

BDS – 5% 

Yrly Coal 

Cost 

Increase

0 0 0 0 0 0 0 0 0 0 254 0 0 0 0 0 0 508 0 0

BDS -

Max DSM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 200

BDS -

GEO Cap 0 0 0 0 0 0 0 628 0 0 0 0 0 0 0 0 0 0 0 0

WRA 

Data 

Case

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 508 0 0 0

Table 2 - New Thermal Generation Expansion Plans by Year 

For the 2012 APR, all new thermal generation resources shown in Table 2 are gas-fired. The thermal stations in 

red are combined cycle facilities. The thermal stations shown in black are plants based on reciprocating engines. 

Scenario

20132014201520162017201820192020202120222023202420252026202720282029203020312032

BAU 0 0 0 0 0 0 0 0 200 0 0 0 0 0 0 0 0 0 0 0

BAU- High 0 0 0 0 0 0 0 0 200 0 0 0 0 0 0 0 0 0 400 0

BAU- Low 0 0 0 0 0 0 0 0 100 0 0 0 0 0 0 0 0 0 200 0

BDS 0 0 0 0 0 0 0 0 200 0 200 0 0 0 0 200 200 200 200 0

BDS – 5% Yrly 

Coal Cost 

Increase

0 0 0 0 0 0 0 0 200 0 0 0 0 0 0 0 400 0 0 0

BDS - Max 

DSM 0 0 0 0 0 0 0 0 200 0 0 0 0 0 0 0 200 200 200 200

BDS - GEO 

Cap 0 0 0 600 0 200 0 0 0 0 0 100 0 0 100 0 0 0 0 0

WRA Data 

Case 0 0 0 0 0 0 0 0 200 200 800 0 200 200 400 0 0 0 0 0

Table 3 - New Renewable Generation Expansion Plans by Year 

Table 3 shows the expansion plans for renewable resources for each of the eight additional model runs. The 

resource additions in black are wind resources. The red numbers represent solar "power tower" resources. 

The following section addresses specific questions related to modeling that were raised during the public input 

process: 

1. Tri-State explained that, in one scenario (“Basic Default Scenario/Maximum Achievable DSM”), adding 

more cost-effective DSM to the system raised PVRR. We pointed out that this was counter-intuitive. TriState agreed, and it said that the anomalous result was a computer model problem that would be 

remedied shortly. Has this problem been fixed? 
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Tri-State Generation and Transmission Association, Inc. 14

This issue arose as a result of tolerance and accuracy in the expansion planning model. In the expansion 

plan one additional landfill gas facility was built in the Maximum Achievable DSM case compared to the 

High DSM case. This resulted in the PVRR being $30 Million or 0.15% higher than the High DSM case. The 

difference is not significant and is within the tolerance of the model. The expansion planning model is 

generally set for a 1% stopping tolerance for final modeling runs. 

2. Tri-State did not integrate demand elasticity into its modeling. Tri-State said it would work on this issue 

in the Action Plan. What is the status of this effort? 

Tri-State's load forecasting department is constantly evaluating elasticity effects into its load forecast. 

There has not been a determination as to the effects of price elasticity that might be observable in some of 

the very high price scenarios that have been developed. 

3. Tri-State used deterministic modeling for intermittent unit operation, as if Tri-State knows when the 

wind will blow and the sun will shine. We request that Tri-State address whether and, if so, how, it is 

refining modeling in this area. 

Tri-State uses industry-standard hourly chronological production cost models. This has been brought up 

with the software providers and improvements will be incorporated into the process as the technology 

improves. 

4. Tri-State’s modeling did not consider the potential savings in transmission costs from distributed 

generation (DG) and whether the need for ancillary services decreases or increases as DG is added to the 

system. Has Tri-State made progress in considering these issues in its modeling? 

The economic modeling did take this into account. Tri-State modeled a scenario with large amounts of DG 

in the 2010 ERP, and the amount of transmission required for this scenario and all other scenarios is shown 

in the transmission section. In addition, the aforementioned DR and ES products include a harvested DG 

program that will also address this issue through locational value, if any. 

5. Tri-State’s modeling assumed that it can add very large amounts of variable resources on to its system 

when the system may be incapable of integrating all this power, either for lack of easily rampable 

capacity, operations in five different balancing areas, the need for ancillary services and the absence of 

natural gas infrastructure. We ask for more information on these issues in the Action Plan section of the 

comments, below. Here, we ask whether Tri-State has made progress in considering these issues in its 

modeling capacity. 

The problems associated with the addition of large amounts of variable resources remains an important 

issue that is being addressed by many organizations. Tri-State is participating in several of these studies 

(NREL WWSIS, WECC, PSERC, UVIG, etc) and looks forward to incorporating the best modeling techniques 

into its resource planning process. Some of the expansion plans represent systems that may not be 

operable under current industry practices. 

6. Tri-State’s modeling used many variables for certain costs, including natural gas prices, coal prices, 

electricity market prices and carbon prices. WRA was not convinced that these inputs were internally 

consistent in the 2010 resource plan. We note that Tri-State is using some different cost assumptions in 

its [2011] update. What is Tri-State’s confidence that its new assumptions [including those used in the 

2012 update] are internally consistent? 

This issue was addressed above in the Section “Internal Consistency of Inputs” 
Electric Resource Plan Annual Progress Report 

Tri-State Generation and Transmission Association, Inc. 15

G. An updated report on the utility’s efforts to give the fullest possible 

consideration to the cost-effective implementation of new clean energy 

and energy-efficient technologies (as defined in Section 1, subsection 8) 

in its consideration of generation acquisitions. 

Renewable Projects 

Since the 2010 ERP, Tri-State has commercialized two significant renewable energy facilities, the Cimarron solar 

and the Kit Carson wind projects. In February 2012, Tri-State signed a power purchase agreement for a wind 

project from Colorado Highlands Wind. The Colorado Highlands Wind project is due to come online in late-2012 

with 67.2 MW of capacity from 42, 1.6 MW turbines. At its peak capacity the facility can serve up to 17,000 

homes and will generate over 300,000 MWh per year. 

 

Tri-State discussed in its 2010 Action Plan that it authorized incentives to its Members for the development of 

local renewable energy projects. With the help of Tri-State’s Board of Directors' policies and associated subsidies, 

the Association’s Member-Systems are ramping up their renewable portfolios. Tri-State’s Members have planned 

or built multiple local renewable projects that are helping to fulfill both Colorado’s and New Mexico’s RES 

requirements, as well as satisfy their member consumers’ interest in purchasing green power. 

Tri-State enabled the development of many of these member-owned or controlled projects through its existing 

Board Policies 115 and 117. Policy 115 provides the implementation details and requirements, including billing 

treatment, for such projects, and Policy 117 describes the available incentive payments to members who develop 

renewable projects, and whose environmental attributes are used to meet a member’s renewable portfolio 

standard requirements. Tri-State staff helps to facilitate the successful development of these projects through 

education and analysis of the policies for our members, contract development prior to commercialization, and 

operational and billing support throughout the project’s life. As a result, 23 MW of Member renewable energy 

projects have been completed with a projected total of 44 MW to be online by 2013. 

Further details of these projects are as follows: 

 As of late-August, 2012, a total of 11 Tri-State Member-Systems have energized or are developing 29 local 

renewable projects. The combined total capacity of these 29 projects is expected to reach 44 MW by the end 

of 2013. 

 Several solar projects began construction and achieved commercial operation in 2012. The 1.5 MW Amalia 

Solar project came online in June, 2012 for Kit Carson Electric (Taos, New Mexico), and Poudre Valley REA 

energized a 100 kW solar installation at its headquarters in August, 2012. San Miguel Power Association 

(Ridgway, Colorado) expects to energize a similar community solar facility (1 MW) in the Paradox Valley in 

the fourth quarter of 2012. Empire Electric (Cortez, Colorado) energized a 72 kW facility known as the Red 

Wagon – Mancos 1 project. Two larger scale solar projects are also expected to achieve commercial 

operation by the end of 2012 – a 1.7 MW solar array known as the Hanger 160 project in United Power’s 

(Brighton, Colorado) service territory, and a 1.25 MW solar project known as Blue Sky Energy in Kit Carson’s 

service territory. 

 Two of the largest member distributed generation projects currently in operation are the Williams Four 

Corners generating facility located in La Plata Electric’s (Durango, Colorado) service area, producing 5.8 MW 

from an industrial waste heat recovery system, and Highline Electric’s (Holyoke, Colorado) Trailblazer unit, 

which provides up to 4 MW utilizing a similar waste heat recovery system. In 2013, Delta-Montrose Electric 

Association (Montrose, Colorado) expects to commercialize the South Canal Hydro Project, which is 

expected to produce more than 6 MW of capacity by the second quarter of 2013. 
Electric Resource Plan Annual Progress Report 

Tri-State Generation and Transmission Association, Inc. 16

 In 2012, the 2.6 MW Carter Lake hydroelectric project achieved commercial operation as a generation 

project for Poudre Valley REA. Additionally, San Miguel Power Association added the 500 kW Bridal Veil 

hydro project for treatment under Tri-State Policy 115. 

Research and Development Projects 

In the 2010 ERP, Tri-State discussed eight areas and detailed twenty-five programs and projects that focused on 

reducing green house gas emissions which constitute a comprehensive assessment of new clean and energyefficient technologies. Tri-State has since continued these programs and developed new initiatives and research 

related to transmission and generation efficiency, new generation and storage technologies, and carbon 

management. 

To leverage its research dollars, Tri-State is a major contributor to the Electric Power Research Institute (EPRI), 

the Cooperative Research Network (CRN), Power Systems Engineering Research Center (PSERC) and Utility 

Wind Integration Group (UWIG) among other research organizations. Tri-State’s Action Plan includes a 

commitment to continue this support for vital R&D. 

Tri-State’s R&D efforts are directed across the energy value chain from end-use to distribution and transmission, 

to generation and fuels, including compressed air storage, enhanced batteries, and carbon capture utilization and 

sequestration (CCS). 

Tri-State through its research partners has helped fund new research into a solar augmentation plant in Australia, 

optimization of cooling towers to reduce auxiliary load requirements, demand response modeling, a Colorado 

Geologic Survey to determine suitability for CO2 sequestration, as well as becoming a participant in the Combined 

Cycle Thermal Performance Interest Group. These projects will help create efficiencies in power generation 

which will enable more generation with less environmental impact. 

Work has continued on Tri-State's program to encourage the development of breakthrough processes to 

transform, commercialize and monetize the carbon dioxide emissions resulting from traditional fossil fuel 

generation. Working with the X-Prize Foundation, Tri-State is developing a prize competition to incentivize 

participants to develop carbon utilization technologies that would avoid the current high cost of capture and 

sequestration. 

Tri-State completed a study on Compressed Air Energy Storage in Northeast Colorado. It was determined that 

this project was not economically feasible. This is particularly due to Tri-State's ancillary service needs as it 

purchases these from its balancing authorities. 

The 2010 Action Plan listed Electric Transportation as a strategy. In pursuit of gaining more knowledge about 

Plug-in Hybrid Electric Vehicle (PHEV) technologies, Tri-State has been working with Chrysler and the Department 

of Energy to field test 4 Plug-in Hybrid Dodge trucks. 

As discussed in section F, Tri-State has also spent a significant amount of time working with other utilities and 

government entities to look at issues related to renewable integration. The result of these collaborations should 

give insights into better modeling techniques that can be utilized in future resource plans. 

Tri-State continues to pursue the other research projects listed in the 2010 ERP. Most of the activities associated 

with these projects are ongoing and have not yet yielded any conclusive results. 

Demand Response and Energy Shaping 

As noted above, Tri-State in association with its Member Systems, has developed a portfolio of demand response 

and energy shaping products and services for all customer segments from residential and small commercial to 
Electric Resource Plan Annual Progress Report 

Tri-State Generation and Transmission Association, Inc. 17

irrigation to large commercial and industrial to system enhancements. These will begin to be rolled-out in 2013 as 

enabled by a new wholesale rate design change to become effective January 1, 2013. 

H. Any Material Changes to its Resource Plan or Action Plan 

As discussed in sections E and G, Tri-State has made significant progress towards fulfilling the objectives from the 

2010 ERP Action Plan. The 2010 ERP Action Plan indicated a need for additional renewable energy to meet the 

Colorado and New Mexico RES within the Resource Acquisition Period. The purchase power agreement to 

purchase the capacity and energy from the Colorado Highlands Wind project will provide the necessary renewable 

energy to meet these RES requirements. The effect of the acquisition of the J. M. Shafer Station, the new demand 

response and energy shaping load-related Products and Services Program, and the slowed load growth have 

delayed the need for capacity resources by as much as seven years. As in the 2010 ERP "business opportunities, 

circumstances and risks may develop that could cause Tri-State to pursue resource options that were not modeled 

in any of the scenarios devised during the Public Participation Process. Ultimately, the resources needed to serve 

Tri-State's Members will be determined by Tri-State's Board of Directors in pursuit of the mission of the 

Association." 
Electric Resource Plan Annual Progress Report 

Tri-State Generation and Transmission Association, Inc. 18

Appendix A - Load Forecast Data 

Table 4 - Updated Annual Actual and Forecasted Energy Requirements 

Year

SystemwideEastern 

Colorado

Western 

Colorado

New 

Mexico Wyoming Nebraska

SystemwideEastern 

Colorado

Western 

Colorado

New 

Mexico Wyoming Nebraska

Actual 2007 13,480 4,639 3,426 2,840 1,695 880

Actual 2008 14,067 4,838 3,815 2,905 1,627 882

Actual 2009 14,305 4,804 4,124 2,900 1,667 810

Actual 2010 15,106 5,154 4,349 3,058 1,687 858

Actual 2011 15,496 5,240 4,440 3,158 1,810 848

Projected 2012 15,541 5,171 4,493 3,167 1,853 856 0.3% -1.3% 1.2% 0.3% 2.4% 1.0%

Projected 2013 15,773 5,297 4,533 3,193 1,895 856 0.9% 0.5% 1.0% 0.6% 2.3% 0.5%

Projected 2014 16,015 5,385 4,608 3,240 1,925 857 1.1% 0.9% 1.2% 0.9% 2.1% 0.4%

Projected 2015 16,347 5,477 4,753 3,293 1,965 859 1.3% 1.1% 1.7% 1.1% 2.1% 0.3%

Projected 2016 16,598 5,580 4,824 3,334 1,997 863 1.4% 1.3% 1.7% 1.1% 2.0% 0.3%

Projected 2017 16,865 5,678 4,912 3,373 2,035 867 1.4% 1.3% 1.7% 1.1% 2.0% 0.4%

Projected 2018 17,222 5,784 5,081 3,414 2,069 873 1.5% 1.4% 1.9% 1.1% 1.9% 0.4%

Projected 2019 17,578 5,893 5,249 3,456 2,102 878 1.6% 1.5% 2.1% 1.1% 1.9% 0.4%

Projected 2020 17,937 6,002 5,418 3,499 2,131 886 1.6% 1.5% 2.2% 1.1% 1.8% 0.5%

Projected 2021 18,294 6,108 5,586 3,540 2,167 892 1.7% 1.5% 2.3% 1.1% 1.8% 0.5%

Projected 2022 18,477 6,147 5,648 3,580 2,205 897 1.6% 1.5% 2.2% 1.1% 1.8% 0.5%

Projected 2023 18,726 6,253 5,713 3,620 2,238 902 1.6% 1.5% 2.1% 1.1% 1.8% 0.5%

Projected 2024 18,988 6,365 5,783 3,663 2,269 907 1.6% 1.5% 2.1% 1.1% 1.8% 0.5%

Projected 2025 19,222 6,469 5,845 3,702 2,295 911 1.6% 1.5% 2.0% 1.1% 1.7% 0.5%

Projected 2026 19,473 6,577 5,912 3,743 2,326 915 1.5% 1.5% 1.9% 1.1% 1.7% 0.5%

Projected 2027 19,720 6,684 5,978 3,782 2,358 919 1.5% 1.5% 1.9% 1.1% 1.7% 0.5%

Projected 2028 19,974 6,796 6,046 3,824 2,385 923 1.5% 1.5% 1.8% 1.1% 1.6% 0.5%

Projected 2029 20,204 6,899 6,106 3,863 2,408 927 1.5% 1.5% 1.8% 1.1% 1.6% 0.5%

Projected 2030 20,488 7,008 6,211 3,904 2,435 931 1.5% 1.5% 1.8% 1.1% 1.6% 0.5%

Projected 2031 20,781 7,116 6,319 3,944 2,467 934 1.5% 1.5% 1.8% 1.1% 1.6% 0.5%

2032 21,084 7,229 6,430 3,987 2,499 939 1.5% 1.5% 1.8% 1.1% 1.5% 0.5%

Annual Energy Annual Growth Rate from 2011 Actual Energy
Electric Resource Plan Annual Progress Report 

Tri-State Generation and Transmission Association, Inc. 19

Table 5 - Updated Annual Actual and Forecasted Summer Peak Capacity Requirement 

Year

SystemwideEastern 

Colorado

Western 

Colorado

New 

Mexico Wyoming Nebraska

SystemwideEastern 

Colorado

Western 

Colorado

New 

Mexico Wyoming Nebraska

Actual 2007 2,422 996 457 396 259 314

Actual 2008 2,497 1,046 498 409 220 325

Actual 2009 2,447 993 530 400 226 299

Actual 2010 2,568 1,061 543 432 216 316

Actual 2011 2,637 1,080 563 422 252 320

Projected 2012 2,696 1,104 586 430 261 316 2.2% 2.2% 3.9% 2.0% 3.5% -1.2%

Projected 2013 2,731 1,123 591 433 267 317 1.8% 1.9% 2.4% 1.4% 2.9% -0.4%

Projected 2014 2,761 1,135 598 440 271 317 1.5% 1.7% 2.0% 1.5% 2.4% -0.3%

Projected 2015 2,813 1,154 618 448 277 317 1.6% 1.7% 2.3% 1.5% 2.3% -0.2%

Projected 2016 2,851 1,173 627 453 280 317 1.6% 1.7% 2.2% 1.5% 2.1% -0.1%

Projected 2017 2,896 1,196 637 459 286 319 1.6% 1.7% 2.1% 1.4% 2.1% -0.1%

Projected 2018 2,950 1,215 660 465 290 320 1.6% 1.7% 2.3% 1.4% 2.0% 0.0%

Projected 2019 3,004 1,236 681 471 295 322 1.6% 1.7% 2.4% 1.4% 2.0% 0.1%

Projected 2020 3,060 1,258 702 477 298 324 1.7% 1.7% 2.5% 1.4% 1.9% 0.2%

Projected 2021 3,116 1,278 725 483 303 326 1.7% 1.7% 2.6% 1.4% 1.9% 0.2%

Projected 2022 3,148 1,293 730 489 308 328 1.6% 1.6% 2.4% 1.4% 1.8% 0.2%

Projected 2023 3,188 1,314 739 494 312 329 1.6% 1.6% 2.3% 1.3% 1.8% 0.2%

Projected 2024 3,231 1,336 747 500 316 330 1.6% 1.7% 2.2% 1.3% 1.8% 0.2%

Projected 2025 3,268 1,356 755 506 320 331 1.5% 1.6% 2.1% 1.3% 1.7% 0.3%

Projected 2026 3,309 1,378 763 512 324 332 1.5% 1.6% 2.0% 1.3% 1.7% 0.3%

Projected 2027 3,347 1,399 771 517 328 332 1.5% 1.6% 2.0% 1.3% 1.7% 0.2%

Projected 2028 3,388 1,421 780 523 331 333 1.5% 1.6% 1.9% 1.3% 1.6% 0.2%

Projected 2029 3,424 1,441 786 529 334 333 1.5% 1.6% 1.9% 1.3% 1.6% 0.2%

Projected 2030 3,470 1,463 801 534 338 334 1.5% 1.6% 1.9% 1.3% 1.5% 0.2%

Projected 2031 3,514 1,484 814 540 342 334 1.4% 1.6% 1.9% 1.2% 1.5% 0.2%

2032 3,562 1,507 828 546 346 335 1.4% 1.6% 1.8% 1.2% 1.5% 0.2%

Annual Growth Rate from 2011 Actual Coincident Summer 

Coincident Summer Peak Demand Peak Demand
Electric Resource Plan Annual Progress Report 

Tri-State Generation and Transmission Association, Inc. 20

Table 6 - Updated Annual Actual and Forecasted Winter Peak Capacity Requirement 

Year

SystemwideEastern 

Colorado

Western 

Colorado

New 

Mexico Wyoming Nebraska

SystemwideEastern 

Colorado

Western 

Colorado

New 

Mexico Wyoming Nebraska

Actual 2007 1,990 677 569 451 216 78

Actual 2008 2,034 731 580 414 215 94

Actual 2009 2,111 744 623 412 237 95

Actual 2010 2,182 729 650 459 251 93

Actual 2011 2,119 712 624 470 229 84

Projected 2012 2,200 749 669 451 243 89 3.8% 5.2% 7.1% -3.9% 5.8% 6.4%

Projected 2013 2,232 768 673 455 247 89 2.6% 3.8% 3.8% -1.6% 3.8% 3.2%

Projected 2014 2,274 777 695 461 251 90 2.4% 3.0% 3.6% -0.7% 3.1% 2.3%

Projected 2015 2,310 793 705 467 256 90 2.2% 2.7% 3.1% -0.2% 2.7% 1.8%

Projected 2016 2,351 813 716 472 260 91 2.1% 2.7% 2.8% 0.1% 2.5% 1.6%

Projected 2017 2,392 826 733 477 264 91 2.0% 2.5% 2.7% 0.3% 2.4% 1.5%

Projected 2018 2,444 844 757 483 268 92 2.1% 2.4% 2.8% 0.4% 2.3% 1.4%

Projected 2019 2,496 862 780 489 272 93 2.1% 2.4% 2.8% 0.5% 2.2% 1.3%

Projected 2020 2,549 880 804 495 276 94 2.1% 2.4% 2.8% 0.6% 2.1% 1.3%

Projected 2021 2,594 898 821 500 281 94 2.0% 2.4% 2.8% 0.6% 2.0% 1.2%

Projected 2022 2,627 913 829 506 285 95 2.0% 2.3% 2.6% 0.7% 2.0% 1.2%

Projected 2023 2,667 931 840 512 289 96 1.9% 2.3% 2.5% 0.7% 1.9% 1.1%

Projected 2024 2,706 950 850 517 293 97 1.9% 2.2% 2.4% 0.7% 1.9% 1.1%

Projected 2025 2,743 968 859 523 296 97 1.9% 2.2% 2.3% 0.8% 1.8% 1.1%

Projected 2026 2,781 986 869 528 300 98 1.8% 2.2% 2.2% 0.8% 1.8% 1.0%

Projected 2027 2,821 1,005 880 534 304 99 1.8% 2.2% 2.2% 0.8% 1.8% 1.0%

Projected 2028 2,858 1,023 889 540 307 99 1.8% 2.2% 2.1% 0.8% 1.7% 1.0%

Projected 2029 2,897 1,041 901 545 310 100 1.8% 2.1% 2.1% 0.8% 1.7% 1.0%

Projected 2030 2,941 1,060 916 550 314 101 1.7% 2.1% 2.0% 0.8% 1.7% 1.0%

Projected 2031 2,986 1,079 932 556 318 101 1.7% 2.1% 2.0% 0.8% 1.6% 1.0%

2032 3,031 1,097 947 562 322 102 1.7% 2.1% 2.0% 0.9% 1.6% 1.0%

Annual Growth Rate from 2011 Actual Coincident Winter Peak 

Coincident Winter Peak Demand Demand
Electric Resource Plan Annual Progress Report 

Tri-State Generation and Transmission Association, Inc. 21

Table 7 - Updated Annual Actual and Forecasted System Load Factors 

MONTH Year

SystemwideEastern 

Colorado

Western 

Colorado

New 

Mexico Wyoming Nebraska

Actual 2007 63.5% 53.2% 68.7% 71.9% 74.7% 32.0%

Actual 2008 63.9% 51.9% 74.9% 79.1% 81.4% 30.8%

Actual 2009 66.7% 55.2% 75.5% 80.4% 80.2% 30.9%

Actual 2010 67.1% 55.4% 76.4% 76.0% 76.6% 31.0%

Actual 2011 66.6% 54.4% 78.4% 76.7% 77.5% 29.7%

Projected 2012 65.8% 53.5% 76.7% 80.0% 81.0% 30.9%

Projected 2013 65.9% 53.9% 76.9% 80.2% 80.9% 30.8%

Projected 2014 66.2% 54.1% 75.7% 80.3% 81.2% 30.9%

Projected 2015 66.3% 54.2% 76.9% 80.6% 81.1% 31.0%

Projected 2016 66.5% 54.3% 76.9% 80.6% 81.3% 31.0%

Projected 2017 66.5% 54.2% 76.5% 80.7% 81.3% 31.1%

Projected 2018 66.6% 54.3% 76.6% 80.7% 81.4% 31.1%

Projected 2019 66.8% 54.4% 76.8% 80.7% 81.5% 31.2%

Projected 2020 66.9% 54.5% 76.9% 80.7% 81.6% 31.2%

Projected 2021 67.0% 54.5% 77.7% 80.8% 81.6% 31.2%

Projected 2022 67.0% 54.3% 77.8% 80.8% 81.7% 31.3%

Projected 2023 67.1% 54.3% 77.7% 80.8% 81.8% 31.3%

Projected 2024 67.1% 54.4% 77.7% 80.8% 81.9% 31.4%

Projected 2025 67.2% 54.4% 77.7% 80.9% 82.0% 31.4%

Projected 2026 67.2% 54.5% 77.6% 80.9% 82.0% 31.5%

Projected 2027 67.3% 54.5% 77.6% 80.9% 82.1% 31.6%

Projected 2028 67.3% 54.6% 77.6% 80.9% 82.2% 31.7%

Projected 2029 67.4% 54.6% 77.4% 80.9% 82.3% 31.7%

Projected 2030 67.4% 54.7% 77.4% 81.0% 82.3% 31.8%

Projected 2031 67.5% 54.7% 77.4% 80.9% 82.4% 31.9%

2032 67.6% 54.8% 77.5% 81.0% 82.5% 32.0%

Annual Load Factors
Electric Resource Plan Annual Progress Report 

Tri-State Generation and Transmission Association, Inc. 22

Appendix B - Scenario Modeling Data 

Table 8 provides a simplified table of cost and performance characteristics obtained from “Program on Technology 

Innovation” document written by EPRI. For detail information on economic and performance assumptions, refer 

to the “Program on Technology Innovation”. 

Potential 

Resource 

Categories Fuel

Dura

-

tion

(yrs)

First/Last

Year 

Available

Nomina

l Plant 

Capacit

y (MW)

Heat 

Rate

( Btu/

kwH)

Capacit

y 

Factor

(%)

Fixed 

Costs

($/kw

/yr)

Variable 

O&M

($/MWh

)

Total Plant 

Costs2

($/kw)

Pulverized Coal Coal 40 2013/ 

2050 750 8750 80 48 2 2000-2300

Integrated 

Gasification 

Combined Cycle

Coal/ 

Natural 

Gas

40 2013/ 

2050 600 8940 80 74 2.3 2600-2850

Natural Gas 

Combined Cycle

Natural 

Gas 30 2013/ 2050 550 6900 80 16 2.3 1060-1150

Nuclear Nuclear 40 2020/

2050 1400 10000 90 110 1.7 3900-4400

Biomass, Bubbling 

Fluidized Bed Biomass 40 2013/ 2050 100 12900 85 63 5 3500-4400

Wind Wind 20 2013/ 

2050 100 - 28-40 35 - 2025-2700

Concentrating Solar 

Thermal Sunlight 30 2013/ 2050 100-250 - 26-58 64-68 - 3300-5300

Photovoltaic Sunlight 20 2013/ 

2050 10 - 15-28 50-65 - 3400-4600

Pulverized Coal with 

Carbon Capture1 Coal 40 2013/ 2050 600 9840-11800 80 79 3.8 3200-4100

Integrated 

Gasification 

Combined Cycle 

with Carbon 

Capture1

Coal/ 

Natural 

Gas

40 2013/ 

2050 500 9100-11000 80 97 3.3 3100-3800

Reciprocating 

Engine3

Natural 

Gas 30 2013/2050

50-500 8500-

9000 20-40 12-22 4-6 900-1200

1

 From Table 1-3 of EPRI Program on Technology Innovation 

2

 All costs in constant Dec. 2010$ 

3

 Approximation values based on installed plant facilities and manufacture data 

 Table 8 - Updated Potential Resources 

WRA

WRA 

escalated to 

2012$

2x1 CC 1000 1093

1x1 CC 1200 1311

Simple Cycle 800 874

Table 9 - Updated WRA Data Case Natural Gas Generation Costs 
Electric Resource Plan Annual Progress Report 

Tri-State Generation and Transmission Association, Inc. 23

BAU Case BDS 5% Coal Growth Case

Transmission Asset Cost In Service Transmission Asset Cost In Service

300 mile; 230kV $ 200,000

50% 2021 

50% 2028 200 mile; 345kV $ 200,000 2029

Station $ 55,000 2021 200 mile; 230 kV $ 120,000 2023

Total $ 255,000 Station $ 85,000 2023

Total $ 405,000

BAU High Case BDS Max DSM Case

Transmission Asset Cost In Service Transmission Asset Cost In Service

200 mile; 345kV dbl-cir $ 360,000 2017 330 mile; 245kVr $ 220,000

45% 2021 

55% 2032

300 mile; 345 kV $ 300,000

50% 2021 

50% 2026 150 mile; 345kV $ 150,000 2029

Station $ 78,000 2017 Station $ 22,000 2021

Total $ 738,000 Total $ 392,000

BAU Low Case WRA Case

Transmission Asset Cost In Service Transmission Asset Cost In Service

280 mile; 230 kV $ 180,000

66.6% 2021 

33.3% 2031 800 mile; 345kV $ 920,000

84% 2023 

16% 2029

Station $ 40,000 2021 Station $ 75,000 2023

Total $ 220,000 Total $ 995,000

BDS Case GEO Case

Transmission Asset Cost In Service Transmission Asset Cost In Service

150 mile; 345kV $ 270,000 2023 350 mile; 345kV dbl-cir $ 630,000 2018

150 mile; 345kV $ 270,000 2019

380 mile; 230 kV $ 240,000 2030 300 mile; 230 kV $ 200,000

50% 2018 

50% 2024

Station $ 37,000 2023 Station $ 75,000 2018

Total $ 547,000 Total $ 1,175,000

Table 10 - Scenario Transmission Expense 
Electric Resource Plan Annual Progress Report 

Tri-State Generation and Transmission Association, Inc. 24

Figure 7 - Updated Forward Electric Power Pricing - Real 2012 $ 

Figure 8 - Updated Forward Natural Gas Pricing - Real 2012 $ 
Electric Resource Plan Annual Progress Report 

Tri-State Generation and Transmission Association, Inc. 25

Figure 9 - Updated Forward Composite Coal Pricing - Real 2012 $ 
Electric Resource Plan Annual Progress Report 

Tri-State Generation and Transmission Association, Inc. 26

Figure 10 - Updated Scenario Present Value Revenue Requirement (PVRR) Impacts, Relative Rate 

Impacts Compared to the BAU Case 

Figure 10 is an updated rate comparison for the eight scenarios modeled. A similar comparison was provided in 

the 2010 ERP and 2011 APR. 

PVRR ($000s)

BAU Base Case $ 21,682,873

BAU High Case $ 24,946,936

BAU Low Case $ 20,087,224

BDS Default Case $ 25,056,789

BDS 5% Coal Increase $ 25,933,860

BDS Max DSM $ 24,323,546

GEO Case $ 26,702,795

WRA Case $ 30,024,868
Electric Resource Plan Annual Progress Report 

Tri-State Generation and Transmission Association, Inc. 27

Figure 11 - Generation by Fuel Type BAU Scenario 

Figure 11 shows the generation by fuel type that would be expected in each year of the BAU Scenario. This 

scenario studies the effects of median economic load growth given current environmental and renewable portfolio 

standard regulations. The PVRR of this scenario is $21.682 billion. 

0

5000

10000

15000

20000

25000

GWHrs

Coal Oil & Gas Renewables Hydro Long Term Purchases Market Purchases
Electric Resource Plan Annual Progress Report 

Tri-State Generation and Transmission Association, Inc. 28

Figure 12 - Generation by Fuel Type BAU High Scenario 

Figure 12 shows the generation by fuel type that would be expected in each year of the BAU High Scenario. The 

primary difference between the BAU and this scenario is the assumption of high economic load growth (HCL 90 

from Figure 1). The PVRR of this scenario is $24.946 billion. 

0

5000

10000

15000

20000

25000

30000

GWHrs

Coal Oil & Gas Renewables Hydro Long Term Purchases Market Purchases
Electric Resource Plan Annual Progress Report 

Tri-State Generation and Transmission Association, Inc. 29

Figure 13 - Generation by Fuel Type BAU Low Scenario 

Figure 13 shows the generation by fuel type that would be expected in each year of the BAU Low Scenario. This 

scenario uses the low load growth case (LCL 90) shown in Figure 1. The PVRR of this scenario is $20.087 billion. 

0

2000

4000

6000

8000

10000

12000

14000

16000

18000

20000

GWHrs

Coal Oil & Gas Renewables Hydro Long Term Purchases Market Purchases
Electric Resource Plan Annual Progress Report 

Tri-State Generation and Transmission Association, Inc. 30

Figure 14 - Generation by Fuel Type BDS Scenario 

Figure 14 shows the generation by fuel type that would be expected in each year of the BDS Scenario. The BDS 

scenarios include forward CO2 regulation costs. The PVRR of this scenario is $25.056 billion. 

0

5000

10000

15000

20000

25000

GWHrs

Coal Oil & Gas Renewables Hydro Long Term Purchases Market Purchases
Electric Resource Plan Annual Progress Report 

Tri-State Generation and Transmission Association, Inc. 31

Figure 15 - Generation by Fuel Type BDS Max DSM Scenario 

Figure 15 shows the generation by fuel type for that would be expected in each year of the BDS Max DSM 

Scenario. The intent of this scenario is to explore the effects of implementing a maximum level DSM set forth in 

the Energy Potential Study completed by Nexant. The PVRR of the BDS Max DSM scenario is $24.323 billion. 

0

5000

10000

15000

20000

25000

GWHrs

Coal Oil & Gas Renewables Hydro Long Term Purchases Market Purchases
Electric Resource Plan Annual Progress Report 

Tri-State Generation and Transmission Association, Inc. 32

Figure 16 - Generation by Fuel Type BDS 5% Yearly Coal Costs Scenario 

Figure 16 shows the generation by fuel type that would be expected in each year of the BDS Scenario which 

includes an increase in coal price of 5% above inflation beginning in 2013. The PVRR of this scenario is $25.933 

billion. 

0

5000

10000

15000

20000

25000

GWHrs

Coal Oil & Gas Renewables Hydro Long Term Purchases Market Purchases
Electric Resource Plan Annual Progress Report 

Tri-State Generation and Transmission Association, Inc. 33

Figure 17 - Generation by Fuel Type Governor's Energy Office (GEO) Limited Wind Scenario 

Figure 17 shows the generation by fuel type that would be expected in each year of the BDS GEO Scenario with 

limited wind capability. This scenario is related to a BDS-GEO scenario which modeled achieving CO2 emission 

level 20% below 2005 levels by 2020. Given the integration and transmission issues related to large amount of 

renewable resources is was assumed here that the expansion plan is limited to a maximum of 800 MW of wind. It 

is also assumed that there will be now forward purchase market and this is a "closed system". The effect of this 

scenario is the redispatch of coal generation to gas generation and renewables. The PVRR of this scenario is 

$26.702 billion. 

0

5,000

10,000

15,000

20,000

25,000

GWHrs

Coal Oil & Gas Renewables Hydro Long Term Purchases Market Purchases
Electric Resource Plan Annual Progress Report 

Tri-State Generation and Transmission Association, Inc. 34

Figure 18 - Generation by Fuel Type Western Resource Advocates 

Figure 18 shows the generation by resource type for a new scenario requested through the public input. The 

PVRR of this scenario is $30.024 billion. 

0

5000

10000

15000

20000

25000

GWHrs

Coal Oil & Gas Renewables Hydro Long Term Purchases Market Purchases
Electric Resource Plan Annual Progress Report 

Tri-State Generation and Transmission Association, Inc. 35

Appendix C - Total Tons of Emissions and Water Consumed per year by each Generating Unit 

Thermal 

Unit

2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032

Craig 1 689 691 746 756 648 728 760 732 740 754 725 763 764 739 777 787 697 786 789 789

Craig 2 525 629 662 551 650 644 667 708 675 676 707 718 697 733 742 723 756 756 762 762

Craig 3 2902 3084 2716 3158 3080 2942 3218 3231 2994 3175 3176 2820 3207 3253 3127 3287 3282 3138 3311 3317

LRS 2 1531 1821 1776 1571 1821 1776 1566 1817 1803 1543 1785 1781 1554 1758 1749 1535 1732 1723 1723 1728

LRS 3 1893 1643 1941 1899 1670 1941 1941 1667 1922 1912 1673 1898 1884 1648 1865 1861 1624 1837 1837 1842

Nucla 748 752 752 754 704 751 751 748 742 737 733 687 724 721 717 715 709 705 737 739

PEGS 1178 964 1047 1069 1023 986 1207 1174 1164 1275 1288 1285 1443 1291 1452 1420 1471 1388 1490 1475

San Juan 3 240 242 240 242 240 241 241 240 240 242 240 227 252 249 245 259 258 247 264 265

Springerville 2657 3062 3076 2963 3092 3086 2957 3086 3070 2686 3044 3037 2655 3010 2998 2863 2975 2963 2833 2971

Burlington 1 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5

Burlington 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Knutson 1 0 0 0 0 0 0 0 0 1 2 0 0 1 0 0 0 0 0 0 0

Knutson 2 0 0 0 0 0 0 0 0 6 2 0 0 2 0 0 0 0 0 0 0

Limon 1 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0

Limon 2 0 7 3 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0

Pyramid 1 16 13 0 14 0 6 5 7 0 22 1 8 15 16 4 18 9 19 22 19

Pyramid 2 16 20 0 9 0 6 2 6 1 16 0 7 13 15 4 15 5 15 16 12

Pyramid 3 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4

Pyramid 4 0 14 4 17 1 8 7 9 3 29 4 14 24 28 19 34 26 40 40 37

Rifle 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Shafer 68 74 92 44 30 33 30 11 24 31 17 22 21 21 26 18 17 16 23 18

Brush 2 5 7 8 4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

1x1 C-C 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 108 111 124 122 116

200 MW 

RECIP

0 0 0 0 0 0 0 0 0 0 44 52 52 54 62 39 44 47 55 57

Total 12477 13031 13072 13059 12968 13157 13361 13446 13395 13113 13447 13329 13318 13545 13795 13691 13723 13812 14034 14155

Table 11 - Business As Usual (BAU) Case CO2 Output (1,000 of tons) 
Electric Resource Plan Annual Progress Report 

Tri-State Generation and Transmission Association, Inc. 36

Thermal Unit 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032

Craig 1 164 164 177 180 154 173 181 174 176 179 172 181 182 176 185 187 166 187 188 187

Craig 2 153 184 193 161 190 188 195 207 197 198 207 210 204 214 217 211 221 221 223 223

Craig 3 1592 1692 1490 1732 1690 1614 1765 1773 1642 1742 1742 1547 1759 1784 1715 1803 1800 1722 1816 1819

LRS 2 1103 1312 1279 1132 1312 1279 1128 1309 1299 1112 1286 1283 1119 1267 1260 1106 1248 1242 1242 1245

LRS 3 1601 1390 1642 1606 1413 1642 1642 1410 1626 1618 1415 1606 1594 1394 1578 1574 1373 1554 1554 1558

Nucla 1086 1092 1092 1095 1022 1090 1090 1086 1077 1070 1064 997 1052 1046 1040 1037 1029 1023 1070 1073

PEGS 728 596 648 661 633 610 746 726 720 788 796 795 892 799 898 878 909 858 922 912

San Juan 3 275 277 275 277 275 276 276 276 275 277 275 260 289 286 281 297 296 283 303 304

Springerville 1245 1435 1441 1388 1449 1446 1386 1446 1438 1259 1426 1423 1244 1410 1405 1342 1394 1388 1327 1392

Burlington 1 5 4 5 4 5 4 5 4 5 4 4 5 5 5 5 5 5 5 5 5

Burlington 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Knutson 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Knutson 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Limon 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Limon 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Pyramid 1 1 1 0 1 0 0 0 0 0 1 0 0 1 1 0 1 0 1 1 1

Pyramid 2 1 1 0 0 0 0 0 0 0 1 0 0 1 1 0 1 0 1 1 1

Pyramid 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Pyramid 4 0 0 0 0 0 0 0 0 0 1 0 0 0 1 0 1 0 1 1 1

Rifle 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Shafer 12 13 16 8 5 6 5 2 4 5 3 4 4 4 4 3 3 3 4 3

Brush 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

1x1 C-C 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

200 MW 

RECIP

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Total 7966 8161 8259 8246 8147 8330 8420 8413 8459 8254 8393 8311 8345 8386 8588 8446 8444 8487 8655 8723

Table 12 - Business As Usual (BAU) Case SO2 Output (ton) 
Electric Resource Plan Annual Progress Report 

Tri-State Generation and Transmission Association, Inc. 37

Thermal Unit 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032

Craig 1 0.9 0.9 1.0 1.0 0.9 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.1 1.1 0.9 1.1 1.1 1.1

Craig 2 0.7 0.8 0.9 0.7 0.9 0.9 0.9 0.9 0.9 0.9 0.9 1.0 0.9 1.0 1.0 1.0 1.0 1.0 1.0 1.0

Craig 3 5.4 5.8 5.1 5.9 5.7 5.5 6.0 6.0 5.6 5.9 5.9 5.3 6.0 6.1 5.8 6.1 6.1 5.9 6.2 6.2

LRS 2 2.0 2.4 2.3 2.0 2.4 2.3 2.0 2.4 2.3 2.0 2.3 2.3 2.0 2.3 2.3 2.0 2.3 2.2 2.2 2.2

LRS 3 2.5 2.2 2.5 2.5 2.2 2.5 2.5 2.2 2.5 2.5 2.2 2.5 2.5 2.2 2.4 2.4 2.1 2.4 2.4 2.4

Nucla 1.5 1.5 1.5 1.5 1.4 1.5 1.5 1.5 1.5 1.5 1.5 1.4 1.4 1.4 1.4 1.4 1.4 1.4 1.5 1.5

PEGS 2.1 1.7 1.8 1.9 1.8 1.7 2.1 2.1 2.0 2.2 2.3 2.3 2.5 2.3 2.6 2.5 2.6 2.4 2.6 2.6

San Juan 3 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.5 0.5 0.4 0.5 0.5 0.4 0.5 0.5

Springerville 1.0 1.1 1.1 1.1 1.2 1.2 1.1 1.2 1.1 1.0 1.1 1.1 1.0 1.1 1.1 1.1 1.1 1.1 1.1 1.1

Burlington 1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Burlington 2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Knutson 1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Knutson 2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Limon 1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Limon 2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Pyramid 1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Pyramid 2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Pyramid 3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Pyramid 4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Rifle 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Shafer 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Brush 2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

1x1 C-C 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

200 MW RECIP 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Total 16.6 16.9 16.8 17.2 16.9 17.1 17.7 17.7 17.5 17.6 17.7 17.3 18.0 17.9 18.2 18.2 18.1 18.1 18.7 18.7

Table 13 - Business As Usual (BAU) Case NOx Output (1,000 of tons) 
Electric Resource Plan Annual Progress Report 

Tri-State Generation and Transmission Association, Inc. 38

Thermal Unit 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032

Craig 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

Craig 2 0 1 1 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

Craig 3 21 22 20 23 22 21 23 24 22 23 23 21 23 24 23 24 24 23 24 24

LRS 2 70 83 81 72 83 81 72 83 82 71 82 81 71 80 80 70 79 79 79 79

LRS 3 82 71 84 82 72 84 84 72 83 82 72 82 81 71 80 80 70 79 79 79

Nucla 38 39 39 39 36 39 39 38 38 38 38 35 37 37 37 37 36 36 38 38

PEGS 11 9 10 10 9 9 11 11 11 12 12 12 13 12 13 13 14 13 14 14

San Juan 3 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

Springerville 76 87 88 84 88 88 84 88 87 76 87 86 76 86 85 82 85 84 81 85

Burlington 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Burlington 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Knutson 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Knutson 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Limon 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Limon 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Pyramid 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Pyramid 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Pyramid 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Pyramid 4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Rifle 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Shafer 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Brush 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

1x1 C-C 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

200 MW RECIP 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Total 300 314 323 312 314 324 315 318 326 305 316 320 305 313 321 309 310 317 317 322

Table 14 - Business As Usual (BAU) Case Hg Output (lbs) 
Electric Resource Plan Annual Progress Report 

Tri-State Generation and Transmission Association, Inc. 39

Thermal Unit 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032

Craig 1 18 18 19 20 17 19 20 19 19 20 19 20 20 19 20 20 18 20 20 20

Craig 2 10 12 13 11 13 13 13 14 13 13 14 14 14 14 15 14 15 15 15 15

Craig 3 51 55 48 56 55 52 57 57 53 56 56 50 57 58 55 58 58 56 59 59

LRS 2 74 88 85 76 88 85 75 87 87 74 86 86 75 84 84 74 83 83 83 83

LRS 3 86 74 88 86 76 88 88 76 87 87 76 86 85 75 84 84 74 83 83 83

Nucla 46 46 46 47 44 46 46 46 46 46 45 42 45 45 44 44 44 44 46 46

PEGS 14 11 12 13 12 12 14 14 14 15 15 15 17 15 17 17 17 16 18 17

San Juan 3 10 10 10 10 10 10 10 10 10 10 10 9 10 10 10 11 11 10 11 11

Springerville 98 113 113 109 114 114 109 114 113 99 112 112 98 111 111 106 110 109 104 110

Burlington 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Burlington 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Knutson 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Knutson 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Limon 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Limon 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Pyramid 1 1 0 0 1 0 0 0 0 0 1 0 0 1 1 0 1 0 1 1 1

Pyramid 2 1 1 0 1 0 0 0 0 0 1 0 0 1 1 0 1 0 1 1 1

Pyramid 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Pyramid 4 0 1 0 1 0 0 0 0 0 1 0 1 1 1 1 2 1 2 2 2

Rifle 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Shafer 3 4 4 2 1 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1

Brush 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

1x1 C-C 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

200 MW RECIP 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Total 413 435 442 431 429 442 435 439 444 425 435 437 425 436 444 433 433 441 444 449

Table 15 - Business As Usual (BAU) Case PM Output (tons) 
Electric Resource Plan Annual Progress Report 

Tri-State Generation and Transmission Association, Inc. 40

Thermal Unit 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032

Craig 1 323 325 350 355 304 342 357 344 348 354 341 358 359 347 365 369 327 369 371 370

Craig 2 242 290 305 254 300 297 308 326 311 312 326 331 322 338 342 333 349 349 351 352

Craig 3 1497 1591 1402 1630 1590 1518 1661 1667 1545 1638 1639 1455 1655 1678 1614 1696 1694 1619 1709 1712

LRS 2 729 867 846 748 867 846 746 865 859 735 850 848 740 837 833 731 825 821 821 823

LRS 3 850 738 872 852 750 872 872 748 863 859 751 852 846 740 837 835 729 825 825 827

Nucla 464 467 467 468 437 466 466 464 460 457 455 426 449 447 445 443 439 437 457 458

PEGS 807 660 717 732 701 675 827 804 797 873 882 880 988 885 994 972 1007 950 1021 1010

San Juan 3 122 123 122 123 122 123 122 122 122 123 122 115 128 127 124 132 131 125 134 135

Springerville 1432 1650 1658 1597 1666 1664 1594 1663 1655 1448 1641 1637 1431 1622 1616 1543 1603 1597 1527 1601

Burlington 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

Burlington 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Knutson 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Knutson 2 0 0 0 0 0 0 0 0 2 1 0 0 1 0 0 0 0 0 0 0

Limon 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Limon 2 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Pyramid 1 10 8 0 8 0 4 3 4 0 13 0 5 9 9 3 11 5 12 13 12

Pyramid 2 11 13 0 6 0 4 1 4 0 11 0 4 9 10 3 10 4 10 11 8

Pyramid 3 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2

Pyramid 4 0 7 2 9 0 4 4 5 2 15 2 8 13 15 10 18 14 21 22 20

Rifle 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Shafer 69 75 93 45 30 33 31 12 25 31 17 22 21 21 26 18 17 16 24 18

Brush 2 5 7 7 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

1x1 C-C 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 145 149 167 163 156

200 MW RECIP 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Total 6565 6825 6844 6834 6770 6850 6993 7033 6992 6874 7030 6946 6974 7080 7215 7263 7296 7321 7451 7504

Table 16 - Business As Usual (BAU) Case Water Consumption (1,000,000 of gallons) 
Electric Resource Plan Annual Progress Report 

Tri-State Generation and Transmission Association, Inc. 41

Thermal Unit 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032

Craig 1 734 750 793 786 711 788 798 764 786 784 748 782 779 772 809 820 726 826 835 839

Craig 2 603 740 748 606 757 744 727 754 746 717 742 747 718 772 781 759 788 798 810 814

Craig 3 3005 3228 2855 3255 3248 3122 3300 3289 3105 3234 3225 2858 3234 3305 3177 3333 3318 3188 3362 3373

LRS 2 1531 1821 1776 1571 1821 1776 1566 1817 1803 1543 1785 1781 1554 1758 1749 1535 1732 1723 1723 1695

LRS 3 1893 1643 1941 1899 1670 1941 1941 1667 1922 1912 1673 1899 1884 1648 1865 1861 1624 1837 1770 1697

Nucla 616 619 619 621 580 619 619 617 612 609 605 567 598 594 591 589 585 580 609 610

PEGS 1638 1478 1664 1621 1688 1583 1737 1618 1720 1679 1742 1683 1817 1597 1797 1730 1830 1704 1836 1836

San Juan 3 275 274 278 278 281 277 293 284 293 285 299 279 315 319 301 327 326 305 329 330

Springerville 2668 3067 3077 2963 3092 3090 2958 3091 3071 2690 3047 3042 2658 3010 2998 2864 2975 2963 2833 2971

Burlington 1 5 4 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5

Burlington 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Knutson 1 0 0 0 0 0 0 0 0 1 1 0 0 2 0 0 0 0 0 0 0

Knutson 2 0 0 0 0 0 0 0 0 1 1 0 1 3 0 0 0 0 0 0 0

Limon 1 0 0 0 0 0 0 0 0 1 0 0 0 1 0 0 0 0 0 0 0

Limon 2 0 4 4 0 0 0 0 0 1 0 0 0 1 0 0 0 0 0 0 0

Pyramid 1 83 123 26 51 14 35 40 66 61 138 106 156 163 184 175 206 204 228 228 230

Pyramid 2 92 134 22 50 8 25 30 44 38 102 60 101 136 125 137 174 180 207 225 228

Pyramid 3 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 8 8 8 8 8

Pyramid 4 0 30 42 68 39 61 68 85 92 159 130 176 209 194 213 238 238 251 257 254

Rifle 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Shafer 95 118 134 71 27 26 30 10 22 24 18 21 24 16 21 22 21 22 27 20

Brush 2 8 14 13 7 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

1x1 C-C 0 0 0 0 159 126 149 160 163 182 154 173 168 410 472 572 558 633 663 644

200 MW 

RECIP

0 0 0 0 0 0 0 0 0 40 46 53 56 34 46 51 56 61 59 60

Total 13255 14056 14006 13858 14108 14226 14270 14279 14451 14110 14393 14332 14333 14751 15144 15093 15173 15339 15579 15615

Table 17 - Business As Usual (BAU) High Case CO2 Output (1,000 of tons) 
Electric Resource Plan Annual Progress Report 

Tri-State Generation and Transmission Association, Inc. 42

Thermal Unit 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032

Craig 1 175 178 189 187 169 187 190 182 187 186 178 186 185 183 192 195 173 196 198 199

Craig 2 176 216 219 177 221 217 212 220 218 210 217 218 210 225 228 222 230 233 237 238

Craig 3 1648 1771 1566 1786 1782 1713 1810 1805 1704 1774 1769 1568 1774 1813 1743 1828 1820 1749 1845 1851

LRS 2 1103 1312 1279 1132 1312 1279 1128 1309 1299 1112 1286 1283 1119 1267 1260 1106 1248 1242 1241 1221

LRS 3 1601 1390 1642 1606 1413 1642 1642 1410 1626 1618 1415 1606 1594 1394 1578 1574 1373 1554 1497 1436

Nucla 1086 1092 1092 1095 1022 1091 1091 1088 1079 1073 1067 1000 1055 1048 1042 1038 1031 1023 1073 1075

PEGS 940 847 955 930 968 908 996 928 987 963 999 965 1042 916 1030 992 1049 977 1053 1053

San Juan 3 278 278 282 282 284 281 297 287 297 289 303 282 319 323 304 331 330 309 333 334

Springerville 1250 1437 1442 1388 1449 1448 1386 1448 1439 1260 1428 1426 1245 1411 1405 1342 1394 1388 1327 1392

Burlington 1 5 4 5 4 5 4 5 4 5 4 4 5 5 5 5 5 5 5 5 5

Burlington 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Knutson 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Knutson 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Limon 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Limon 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Pyramid 1 2 3 1 1 0 1 1 2 1 3 3 4 4 5 4 5 5 6 6 6

Pyramid 2 2 3 1 1 0 1 1 1 1 2 1 2 3 3 3 4 4 5 5 5

Pyramid 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Pyramid 4 0 0 0 1 0 1 1 1 1 2 1 2 2 2 2 2 2 3 3 3

Rifle 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Shafer 16 20 23 12 5 4 5 2 4 4 3 4 4 3 4 4 4 4 5 3

Brush 2 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

1x1 C-C 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

200 MW RECIP 0 0 0 0 0 0 0 0 0 60 71 80 86 52 70 79 85 94 91 92

Total 8284 8553 8695 8603 8631 8778 8766 8687 8846 8561 8745 8631 8648 8650 8871 8727 8754 8787 8918 8914

Table 18 - Business As Usual (BAU) High Case SO2 Output (tons) 
Electric Resource Plan Annual Progress Report 

Tri-State Generation and Transmission Association, Inc. 43

Thermal Unit 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032

Craig 1 1.0 1.0 1.1 1.1 1.0 1.1 1.1 1.0 1.1 1.1 1.0 1.1 1.1 1.1 1.1 1.1 1.0 1.1 1.1 1.1

Craig 2 0.8 1.0 1.0 0.8 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.1 1.1 1.1

Craig 3 5.6 6.0 5.3 6.1 6.1 5.8 6.2 6.1 5.8 6.0 6.0 5.3 6.0 6.2 5.9 6.2 6.2 5.9 6.3 6.3

LRS 2 2.0 2.4 2.3 2.0 2.4 2.3 2.0 2.4 2.3 2.0 2.3 2.3 2.0 2.3 2.3 2.0 2.3 2.2 2.2 2.2

LRS 3 2.5 2.2 2.5 2.5 2.2 2.5 2.5 2.2 2.5 2.5 2.2 2.5 2.5 2.2 2.4 2.4 2.1 2.4 2.3 2.2

Nucla 1.5 1.5 1.5 1.5 1.4 1.5 1.5 1.5 1.5 1.5 1.5 1.4 1.4 1.4 1.4 1.4 1.4 1.4 1.5 1.5

PEGS 2.7 2.4 2.7 2.6 2.8 2.6 2.8 2.6 2.8 2.7 2.8 2.7 3.0 2.6 2.9 2.8 3.0 2.8 3.0 3.0

San Juan 3 0.4 0.4 0.4 0.4 0.5 0.4 0.5 0.5 0.5 0.5 0.5 0.4 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5

Springerville 1.0 1.1 1.1 1.1 1.2 1.2 1.1 1.2 1.1 1.0 1.1 1.1 1.0 1.1 1.1 1.1 1.1 1.1 1.1 1.1

Burlington 1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Burlington 2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Knutson 1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Knutson 2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Limon 1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Limon 2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Pyramid 1 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.0 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1

Pyramid 2 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.0 0.1 0.1 0.1 0.1 0.1 0.1

Pyramid 3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Pyramid 4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1

Rifle 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Shafer 0.1 0.1 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Brush 2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

1x1 C-C 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

200 MW RECIP 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.1 0.2 0.2 0.1 0.1 0.2 0.2 0.2 0.2 0.2

Total 17.6 18.2 18.2 18.3 18.4 18.5 18.8 18.6 18.8 18.6 18.8 18.3 18.9 18.8 19.2 19.1 19.2 19.1 19.7 19.6

Table 19 - Business As Usual (BAU) High Case NOx Output (1,000 of tons) 
Electric Resource Plan Annual Progress Report 

Tri-State Generation and Transmission Association, Inc. 44

Thermal Unit 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032

Craig 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

Craig 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

Craig 3 22 24 21 24 24 23 24 24 23 24 23 21 24 24 23 24 24 23 24 25

LRS 2 70 83 81 72 83 81 72 83 82 71 82 81 71 80 80 70 79 79 79 78

LRS 3 82 71 84 82 72 84 84 72 83 82 72 82 81 71 80 80 70 79 76 73

Nucla 38 39 39 39 36 39 39 39 38 38 38 35 37 37 37 37 37 36 38 38

PEGS 14 13 14 14 14 14 15 14 15 14 15 14 16 14 15 15 16 15 16 16

San Juan 3 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

Springerville 76 87 88 84 88 88 84 88 87 77 87 87 76 86 85 82 85 84 81 85

Burlington 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Burlington 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Knutson 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Knutson 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Limon 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Limon 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Pyramid 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Pyramid 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1

Pyramid 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Pyramid 4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Rifle 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Shafer 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Brush 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

1x1 C-C 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

200 MW RECIP 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Total 305 320 329 317 320 331 320 322 331 309 320 324 308 316 325 312 314 320 318 318

Table 20 - Business As Usual (BAU) High Case Hg Output (lbs) 
Electric Resource Plan Annual Progress Report 

Tri-State Generation and Transmission Association, Inc. 45

Thermal Unit 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032

Craig 1 19 19 21 20 18 20 21 20 20 20 19 20 20 20 21 21 19 21 22 22

Craig 2 12 15 15 12 15 15 14 15 15 14 15 15 14 15 15 15 16 16 16 16

Craig 3 53 57 51 58 58 55 59 58 55 57 57 51 57 59 56 59 59 57 60 60

LRS 2 74 88 85 76 88 85 75 87 87 74 86 86 75 84 84 74 83 83 83 81

LRS 3 86 74 88 86 76 88 88 76 87 87 76 86 85 75 84 84 74 83 80 77

Nucla 46 46 46 47 44 46 46 46 46 46 45 43 45 45 44 44 44 44 46 46

PEGS 18 16 18 18 18 17 19 18 19 18 19 18 20 17 20 19 20 19 20 20

San Juan 3 10 10 10 10 10 10 11 10 11 10 11 10 11 12 11 12 12 11 12 12

Springerville 98 113 113 109 114 114 109 114 113 99 112 112 98 111 111 106 110 109 104 110

Burlington 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Burlington 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Knutson 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Knutson 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Limon 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Limon 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Pyramid 1 2 2 0 1 0 1 1 1 1 3 2 3 3 3 3 4 4 4 4 4

Pyramid 2 3 4 1 2 0 1 1 1 1 3 2 3 4 4 4 5 6 6 7 7

Pyramid 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Pyramid 4 0 1 1 2 1 2 2 3 3 5 4 5 6 6 6 7 7 7 8 8

Rifle 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Shafer 5 6 6 3 1 1 1 0 1 1 1 1 1 1 1 1 1 1 1 1

Brush 2 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

1x1 C-C 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

200 MW RECIP 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Total 426 453 457 444 444 457 448 450 459 438 450 453 442 452 462 452 454 462 463 464

Table 21 - Business As Usual (BAU) High Case PM Output (tons) 
Electric Resource Plan Annual Progress Report 

Tri-State Generation and Transmission Association, Inc. 46

Thermal Unit 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032

Craig 1 345 352 373 369 334 370 375 359 369 368 351 367 366 362 380 385 341 388 392 394

Craig 2 278 341 345 279 349 343 335 348 344 331 342 344 331 356 360 350 363 368 373 375

Craig 3 1551 1666 1473 1680 1676 1611 1703 1698 1602 1669 1665 1475 1669 1706 1640 1720 1712 1645 1735 1741

LRS 2 729 867 846 748 867 846 746 865 859 735 850 848 740 837 833 731 825 821 821 807

LRS 3 850 738 872 852 750 872 872 748 863 859 751 852 846 740 837 835 729 825 795 762

Nucla 464 467 467 468 437 466 466 465 461 458 456 427 451 448 445 444 441 437 459 459

PEGS 1041 939 1057 1030 1073 1006 1103 1028 1093 1066 1107 1069 1154 1015 1141 1099 1162 1082 1166 1167

San Juan 3 123 123 125 125 126 124 132 127 132 128 134 125 141 143 135 147 146 137 148 148

Springerville 1438 1653 1659 1597 1667 1666 1595 1666 1655 1450 1642 1640 1433 1623 1616 1544 1603 1597 1527 1601

Burlington 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

Burlington 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Knutson 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Knutson 2 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0

Limon 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Limon 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Pyramid 1 26 38 8 16 4 11 13 21 19 43 33 49 51 57 54 64 63 71 71 72

Pyramid 2 28 42 7 15 2 8 9 14 12 32 19 31 42 39 43 54 56 64 70 71

Pyramid 3 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 3 2 3 2

Pyramid 4 0 9 13 21 12 19 21 27 29 49 41 55 65 60 66 74 74 78 80 79

Rifle 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Shafer 97 120 136 72 27 26 30 11 22 25 18 21 25 17 21 22 21 22 27 20

Brush 2 8 13 12 7 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

1x1 C-C 0 0 0 0 218 173 204 220 224 249 211 238 230 562 648 784 766 868 910 884

200 MW RECIP 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Total 6981 7372 7395 7282 7547 7544 7607 7598 7687 7465 7623 7546 7548 7968 8223 8256 8307 8407 8577 8583

Table 22 - Business As Usual (BAU) High Case Water Consumption (1,000,000 of gallons) 
Electric Resource Plan Annual Progress Report 

Tri-State Generation and Transmission Association, Inc. 47

Thermal 

Unit

2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032

Craig 1 597 559 593 588 456 509 552 551 535 592 554 612 639 608 634 673 597 677 679 663

Craig 2 410 454 468 361 391 395 410 442 422 450 448 495 503 509 517 548 577 578 583 561

Craig 3 2555 2533 2109 2497 2154 1968 2324 2411 2090 2511 2413 2207 2737 2695 2549 2890 2893 2744 2913 2834

LRS 2 1531 1821 1776 1571 1821 1776 1566 1817 1803 1543 1785 1781 1554 1758 1749 1535 1732 1723 1723 1724

LRS 3 1892 1643 1941 1897 1670 1941 1941 1667 1922 1912 1673 1898 1884 1648 1865 1861 1624 1837 1837 1727

Nucla 748 752 751 754 703 746 749 747 739 736 732 685 723 721 715 714 708 704 736 736

PEGS 844 669 725 667 692 661 709 686 723 687 739 716 771 700 807 794 865 841 918 891

San Juan 3 241 242 241 242 241 242 241 242 241 242 241 227 241 241 240 240 240 239 241 241

Springerville 2652 3056 3055 2944 3066 3047 2941 3073 2932 2629 2944 2956 2613 2951 2942 2827 2939 2931 2810 2943

Burlington 1 5 5 5 5 5 5 5 4 5 5 5 5 5 5 5 5 5 5 5 5

Burlington 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Knutson 1 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0

Knutson 2 0 0 0 0 0 0 0 0 5 0 0 3 1 0 1 0 0 3 0 0

Limon 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Limon 2 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Pyramid 1 11 9 0 7 0 0 4 0 0 7 0 0 6 2 0 5 0 2 3 0

Pyramid 2 4 1 0 6 0 4 1 4 0 5 0 3 1 7 0 4 0 5 0 0

Pyramid 3 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4

Pyramid 4 0 4 0 11 0 7 3 8 0 10 0 6 4 13 0 8 0 7 2 1

Rifle 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Shafer 29 33 57 21 12 17 11 3 11 11 9 30 10 11 25 21 17 24 25 22

Brush 2 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Total 11523 11787 11728 11577 11215 11323 11461 11659 11432 11343 11547 11628 11697 11872 12054 12130 12201 12325 12479 12351

Table 23 - Business As Usual (BAU) Low Case CO2 Output (1,000 of tons) 
Electric Resource Plan Annual Progress Report 

Tri-State Generation and Transmission Association, Inc. 48

Thermal Unit 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032

Craig 1 142 133 141 140 108 121 131 131 127 141 132 145 152 145 151 160 142 161 161 158

Craig 2 120 133 137 106 114 115 120 129 123 131 131 145 147 149 151 160 169 169 170 164

Craig 3 1402 1390 1157 1370 1182 1080 1275 1322 1146 1378 1324 1211 1502 1478 1399 1585 1587 1506 1598 1554

LRS 2 1103 1312 1279 1132 1312 1279 1128 1309 1299 1112 1286 1283 1119 1267 1260 1106 1248 1242 1242 1242

LRS 3 1600 1390 1642 1605 1413 1642 1642 1410 1626 1617 1415 1606 1594 1394 1578 1574 1373 1554 1554 1460

Nucla 1086 1092 1091 1094 1020 1083 1087 1085 1073 1068 1063 994 1050 1046 1038 1036 1028 1021 1068 1069

PEGS 522 414 448 413 428 409 438 424 447 425 457 443 477 433 499 491 535 520 568 551

San Juan 3 276 277 276 278 276 277 276 277 276 277 276 260 276 276 275 275 275 274 277 276

Springerville 1243 1432 1432 1380 1437 1428 1378 1440 1374 1232 1379 1385 1225 1383 1378 1325 1377 1374 1317 1379

Burlington 1 5 4 5 4 5 4 5 4 5 4 4 5 5 5 5 5 5 5 5 5

Burlington 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Knutson 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Knutson 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Limon 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Limon 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Pyramid 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Pyramid 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Pyramid 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Pyramid 4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Rifle 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Shafer 5 6 10 4 2 3 2 1 2 2 1 5 2 2 4 4 3 4 4 4

Brush 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Total 7503 7582 7617 7525 7296 7442 7483 7533 7498 7388 7469 7482 7547 7577 7738 7722 7742 7829 7963 7861

Table 24 - Business As Usual (BAU) Low Case SO2 Output (tons) 
Electric Resource Plan Annual Progress Report 

Tri-State Generation and Transmission Association, Inc. 49

Thermal Unit 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032

Craig 1 0.8 0.8 0.8 0.8 0.6 0.7 0.8 0.7 0.7 0.8 0.8 0.8 0.9 0.8 0.9 0.9 0.8 0.9 0.9 0.9

Craig 2 0.5 0.6 0.6 0.5 0.5 0.5 0.5 0.6 0.6 0.6 0.6 0.7 0.7 0.7 0.7 0.7 0.8 0.8 0.8 0.7

Craig 3 4.8 4.7 3.9 4.7 4.0 3.7 4.3 4.5 3.9 4.7 4.5 4.1 5.1 5.0 4.8 5.4 5.4 5.1 5.4 5.3

LRS 2 2.0 2.4 2.3 2.0 2.4 2.3 2.0 2.4 2.3 2.0 2.3 2.3 2.0 2.3 2.3 2.0 2.3 2.2 2.2 2.2

LRS 3 2.5 2.2 2.5 2.5 2.2 2.5 2.5 2.2 2.5 2.5 2.2 2.5 2.5 2.2 2.4 2.4 2.1 2.4 2.4 2.3

Nucla 1.5 1.5 1.5 1.5 1.4 1.5 1.5 1.5 1.5 1.5 1.4 1.4 1.4 1.4 1.4 1.4 1.4 1.4 1.5 1.5

PEGS 1.5 1.2 1.3 1.2 1.2 1.2 1.2 1.2 1.3 1.2 1.3 1.3 1.4 1.2 1.4 1.4 1.5 1.5 1.6 1.6

San Juan 3 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4

Springerville 1.0 1.1 1.1 1.1 1.1 1.1 1.1 1.1 1.1 1.0 1.1 1.1 1.0 1.1 1.1 1.1 1.1 1.1 1.0 1.1

Burlington 1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Burlington 2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Knutson 1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Knutson 2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Limon 1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Limon 2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Pyramid 1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Pyramid 2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Pyramid 3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Pyramid 4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Rifle 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Shafer 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Brush 2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Total 15.0 14.9 14.6 14.7 13.9 14.0 14.5 14.7 14.4 14.7 14.7 14.6 15.4 15.2 15.4 15.8 15.8 15.9 16.4 16.0

Table 25 - Business As Usual (BAU) Low Case NOx Output (1,000 of tons) 
Electric Resource Plan Annual Progress Report 

Tri-State Generation and Transmission Association, Inc. 50

Thermal Unit 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032

Craig 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

Craig 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Craig 3 19 18 15 18 16 14 17 18 15 18 18 16 20 20 19 21 21 20 21 21

LRS 2 70 83 81 72 83 81 72 83 82 71 82 81 71 80 80 70 79 79 79 79

LRS 3 82 71 84 82 72 84 84 72 83 82 72 82 81 71 80 80 70 79 79 74

Nucla 38 39 39 39 36 38 38 38 38 38 38 35 37 37 37 37 36 36 38 38

PEGS 8 6 7 6 6 6 7 6 7 6 7 7 7 6 7 7 8 8 8 8

San Juan 3 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

Springerville 76 87 87 84 87 87 84 87 83 75 84 84 74 84 84 80 84 83 80 84

Burlington 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Burlington 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Knutson 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Knutson 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Limon 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Limon 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Pyramid 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Pyramid 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Pyramid 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Pyramid 4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Rifle 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Shafer 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Brush 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Total 294 307 315 303 303 312 303 307 311 292 302 308 293 301 309 298 301 308 308 306

Table 26 - Business As Usual (BAU) Low Case Hg Output (lbs) 
Electric Resource Plan Annual Progress Report 

Tri-State Generation and Transmission Association, Inc. 51

Thermal Unit 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032

Craig 1 15 15 15 15 12 13 14 14 14 15 14 16 17 16 16 17 15 18 18 17

Craig 2 8 9 9 7 8 8 8 9 8 9 9 10 10 10 10 11 11 11 12 11

Craig 3 45 45 37 44 38 35 41 43 37 45 43 39 49 48 45 51 51 49 52 50

LRS 2 74 88 85 76 88 85 75 87 87 74 86 86 75 84 84 74 83 83 83 83

LRS 3 86 74 88 86 76 88 88 76 87 87 76 86 85 75 84 84 74 83 83 78

Nucla 46 46 46 47 43 46 46 46 46 45 45 42 45 45 44 44 44 43 45 46

PEGS 10 8 9 8 8 8 8 8 9 8 9 8 9 8 9 9 10 10 11 10

San Juan 3 10 10 10 10 10 10 10 10 10 10 10 9 10 10 10 10 10 10 10 10

Springerville 98 113 113 109 113 112 108 113 108 97 109 109 96 109 108 104 108 108 104 109

Burlington 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Burlington 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Knutson 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Knutson 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Limon 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Limon 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Pyramid 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Pyramid 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Pyramid 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Pyramid 4 0 0 0 1 0 0 0 0 0 1 0 0 0 1 0 0 0 0 0 0

Rifle 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Shafer 1 2 3 1 1 1 1 0 1 1 0 1 0 1 1 1 1 1 1 1

Brush 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Total 395 410 416 404 397 407 401 407 407 392 401 408 397 406 414 408 408 418 419 416

Table 27 - Business As Usual (BAU) Low Case PM Output (tons) 
Electric Resource Plan Annual Progress Report 

Tri-State Generation and Transmission Association, Inc. 52

Thermal Unit 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032

Craig 1 280 263 279 276 214 239 259 259 251 278 260 287 300 286 298 316 280 318 319 311

Craig 2 189 209 216 167 180 182 189 204 195 207 207 228 232 235 239 253 266 266 269 259

Craig 3 1319 1307 1088 1289 1112 1016 1199 1244 1078 1296 1245 1139 1412 1391 1316 1491 1493 1416 1503 1462

LRS 2 729 867 846 748 867 846 746 865 859 735 850 848 740 837 833 731 825 821 821 821

LRS 3 849 738 872 852 750 872 872 748 863 858 751 852 846 740 837 835 729 825 825 775

Nucla 464 466 466 467 436 463 464 464 459 456 454 425 448 447 444 443 439 436 456 457

PEGS 578 459 496 457 474 453 486 470 495 471 506 490 528 480 553 544 593 576 629 610

San Juan 3 122 123 122 123 122 123 122 123 122 123 122 115 122 122 122 122 122 122 123 122

Springerville 1430 1647 1647 1587 1653 1642 1585 1657 1580 1417 1587 1593 1409 1591 1586 1524 1584 1580 1515 1586

Burlington 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

Burlington 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Knutson 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Knutson 2 0 0 0 0 0 0 0 0 1 0 0 1 0 0 0 0 0 1 0 0

Limon 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Limon 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Pyramid 1 7 5 0 4 0 0 3 0 0 4 0 0 4 1 0 3 0 1 2 0

Pyramid 2 3 1 0 4 0 2 0 3 0 3 0 2 1 5 0 3 0 3 0 0

Pyramid 3 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2

Pyramid 4 0 2 0 6 0 4 1 4 0 5 0 3 2 7 0 4 0 4 1 1

Rifle 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Shafer 30 34 58 21 13 17 11 3 11 11 9 30 10 11 25 21 18 24 26 23

Brush 2 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Total 6003 6126 6094 6005 5824 5862 5942 6047 5918 5868 5995 6018 6059 6154 6255 6294 6352 6397 6490 6431

Table 28 - Business As Usual (BAU) Low Case Water Consumption (1,000,000 of gallons) 
Electric Resource Plan Annual Progress Report 

Tri-State Generation and Transmission Association, Inc. 53

Thermal 

Unit

2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032

Craig 1 690 695 764 786 675 766 802 775 774 795 738 815 813 784 821 825 723 793 803 813

Craig 2 528 635 674 567 679 680 710 765 704 716 703 760 734 775 778 751 778 740 750 764

Craig 3 2905 3092 2795 3323 3282 3115 3418 3446 3134 3370 3260 2926 3353 3360 3199 3355 3324 3064 3247 3280

LRS 2 1531 1821 1776 1571 1821 1776 1566 1817 1803 1543 1785 1781 1554 1758 1749 1535 1639 1630 1638 1645

LRS 3 1893 1643 1941 1899 1670 1941 1941 1667 1922 1912 1670 1895 1882 1647 1864 1856 1342 1530 1531 1493

Nucla 748 752 753 755 705 753 753 751 744 740 735 689 726 722 717 715 709 704 736 738

PEGS 1187 980 1052 1080 1033 1010 1269 1260 1193 1347 1232 1272 1476 1270 1478 1441 1503 1173 1173 1182

San Juan 3 240 242 240 242 240 241 241 243 240 244 241 234 258 257 253 266 261 243 242 241

Springerville 2652 3067 3095 2968 3096 3096 2960 3092 3071 2690 3045 3042 2657 3010 2998 2863 2975 2936 2523 2634

Burlington 1 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5

Burlington 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Knutson 1 0 0 0 0 0 0 0 0 4 6 11 2 6 6 12 11 12 8 14 9

Knutson 2 0 0 0 0 0 0 0 0 10 7 14 6 10 11 17 15 17 13 19 14

Limon 1 0 0 0 0 0 0 0 0 3 4 7 0 3 3 6 8 9 5 8 5

Limon 2 0 2 3 0 0 0 0 0 2 2 6 0 2 2 4 4 6 3 6 3

Pyramid 1 16 14 0 14 0 7 5 8 0 24 3 12 19 23 13 32 23 16 14 11

Pyramid 2 16 19 0 9 0 6 2 9 2 19 6 11 18 25 11 26 14 17 13 10

Pyramid 3 4 4 4 4 4 4 4 4 4 6 4 4 4 4 4 4 4 4 4 4

Pyramid 4 0 14 4 19 2 10 9 14 8 37 12 20 30 37 27 44 32 33 26 23

Rifle 0 0 0 0 0 0 0 0 0 0 1 0 1 0 1 2 2 2 3 2

Shafer 60 68 100 51 38 52 45 40 43 47 50 52 52 53 63 65 68 62 69 57

Brush 2 4 7 10 6 2 1 3 0 0 0 0 0 0 0 0 0 0 0 0 0

100 MW 

RECIP

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 197 243 433

200 MW 

RECIP

0 0 0 0 0 0 0 0 0 0 0 222 255 303 354 425 428 396 473 475

Total 12479 13058 13217 13299 13252 13463 13735 13895 13666 13515 13529 13748 13855 14057 14372 14250 13872 13573 13538 13842

Table 29 - Business Default Scenario (BDS) Case CO2 Output (1,000 of tons) 
Electric Resource Plan Annual Progress Report 

Tri-State Generation and Transmission Association, Inc. 54

Thermal Unit 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032

Craig 1 164 165 182 187 160 182 191 184 184 189 175 194 193 186 195 196 172 188 191 193

Craig 2 154 186 197 166 198 199 207 223 206 209 206 222 214 226 227 219 227 216 219 223

Craig 3 1594 1696 1534 1823 1801 1709 1875 1891 1719 1849 1788 1605 1839 1843 1755 1841 1823 1681 1781 1799

LRS 2 1103 1312 1279 1132 1312 1279 1128 1309 1299 1112 1286 1283 1119 1267 1260 1106 1181 1174 1180 1185

LRS 3 1601 1390 1642 1606 1413 1642 1642 1410 1626 1618 1413 1603 1592 1393 1577 1570 1135 1294 1295 1263

Nucla 1085 1092 1093 1096 1024 1093 1093 1090 1080 1073 1067 1000 1054 1048 1041 1038 1029 1022 1069 1072

PEGS 734 606 651 668 639 625 785 779 738 833 762 787 913 785 914 891 929 725 725 731

San Juan 3 275 277 275 277 275 277 277 278 275 280 277 268 295 295 289 305 299 278 277 277

Springerville 1243 1437 1450 1391 1451 1451 1387 1449 1439 1260 1427 1425 1245 1410 1405 1342 1394 1376 1182 1234

Burlington 1 5 4 5 4 5 4 5 4 5 4 4 5 5 5 5 5 5 5 5 5

Burlington 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Knutson 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Knutson 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Limon 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Limon 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Pyramid 1 1 1 0 1 0 0 0 0 0 1 0 1 1 1 1 2 1 1 1 1

Pyramid 2 1 1 0 0 0 0 0 0 0 1 0 1 1 1 1 1 1 1 1 1

Pyramid 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Pyramid 4 0 0 0 0 0 0 0 0 0 1 0 0 1 1 0 1 1 1 0 0

Rifle 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Shafer 10 12 17 9 6 9 8 7 7 8 9 9 9 9 11 11 12 11 12 10

Brush 2 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

100 MW RECIP 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 154 190 338

200 MW RECIP 0 0 0 0 0 0 0 0 0 0 0 174 199 237 276 332 334 310 369 371

Total 7970 8179 8325 8361 8284 8470 8598 8625 8578 8438 8414 8576 8680 8708 8958 8860 8543 8436 8497 8703

Table 30 - Business Default Scenario (BDS) Case SO2 Output (tons) 
Electric Resource Plan Annual Progress Report 

Tri-State Generation and Transmission Association, Inc. 55

Thermal Unit 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032

Craig 1 0.9 0.9 1.0 1.1 0.9 1.0 1.1 1.1 1.1 1.1 1.0 1.1 1.1 1.1 1.1 1.1 1.0 1.1 1.1 1.1

Craig 2 0.7 0.8 0.9 0.8 0.9 0.9 0.9 1.0 0.9 1.0 0.9 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0

Craig 3 5.4 5.8 5.2 6.2 6.1 5.8 6.4 6.4 5.8 6.3 6.1 5.5 6.3 6.3 6.0 6.3 6.2 5.7 6.1 6.1

LRS 2 2.0 2.4 2.3 2.0 2.4 2.3 2.0 2.4 2.3 2.0 2.3 2.3 2.0 2.3 2.3 2.0 2.1 2.1 2.1 2.1

LRS 3 2.5 2.2 2.5 2.5 2.2 2.5 2.5 2.2 2.5 2.5 2.2 2.5 2.5 2.2 2.4 2.4 1.8 2.0 2.0 2.0

Nucla 1.5 1.5 1.5 1.5 1.4 1.5 1.5 1.5 1.5 1.5 1.5 1.4 1.4 1.4 1.4 1.4 1.4 1.4 1.5 1.5

PEGS 2.1 1.7 1.8 1.9 1.8 1.8 2.2 2.2 2.1 2.4 2.2 2.2 2.6 2.2 2.6 2.5 2.6 2.1 2.1 2.1

San Juan 3 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.5 0.5 0.5 0.5 0.5 0.4 0.4 0.4

Springerville 1.0 1.1 1.2 1.1 1.2 1.2 1.1 1.2 1.1 1.0 1.1 1.1 1.0 1.1 1.1 1.1 1.1 1.1 0.9 1.0

Burlington 1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Burlington 2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Knutson 1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Knutson 2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Limon 1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Limon 2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Pyramid 1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Pyramid 2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Pyramid 3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Pyramid 4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Rifle 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Shafer 0.0 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Brush 2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

100 MW RECIP 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.3 0.4 0.7

200 MW RECIP 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.4 0.4 0.5 0.6 0.7 0.7 0.6 0.7 0.7

Total 16.6 17.0 17.0 17.6 17.4 17.5 18.3 18.4 17.9 18.2 17.8 18.0 18.8 18.7 19.1 19.2 18.6 18.0 18.5 18.9

Table 31 - Business Default Scenario (BDS) Case NOx Output (1,000 of tons) 
Electric Resource Plan Annual Progress Report 

Tri-State Generation and Transmission Association, Inc. 56

Thermal Unit 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032

Craig 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

Craig 2 0 1 1 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

Craig 3 21 23 20 24 24 23 25 25 23 25 24 21 24 24 23 24 24 22 24 24

LRS 2 70 83 81 72 83 81 72 83 82 71 82 81 71 80 80 70 75 75 75 75

LRS 3 82 71 84 82 72 84 84 72 83 82 72 82 81 71 80 80 58 66 66 64

Nucla 38 39 39 39 36 39 39 39 38 38 38 35 37 37 37 37 36 36 38 38

PEGS 11 9 10 10 10 9 12 12 11 12 11 12 14 12 14 13 14 11 11 11

San Juan 3 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

Springerville 76 87 88 85 88 88 84 88 87 77 87 87 76 86 85 82 85 84 72 75

Burlington 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Burlington 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Knutson 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Knutson 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Limon 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Limon 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Pyramid 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Pyramid 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Pyramid 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Pyramid 4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Rifle 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Shafer 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Brush 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

100 MW RECIP 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5 6 11

200 MW RECIP 0 0 0 0 0 0 0 0 0 0 0 6 7 8 9 11 11 10 13 13

Total 300 314 324 314 316 326 318 321 327 307 316 327 313 321 332 321 306 312 307 314

Table 32 - Business Default Scenario (BDS) Case Hg Output (lbs) 
Electric Resource Plan Annual Progress Report 

Tri-State Generation and Transmission Association, Inc. 57

Thermal Unit 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032

Craig 1 18 18 20 20 18 20 21 20 20 21 19 21 21 20 21 21 19 21 21 21

Craig 2 10 13 13 11 13 13 14 15 14 14 14 15 14 15 15 15 15 15 15 15

Craig 3 52 55 50 59 58 55 61 61 56 60 58 52 59 60 57 60 59 54 58 58

LRS 2 74 88 85 76 88 85 75 87 87 74 86 86 75 84 84 74 79 78 79 79

LRS 3 86 74 88 86 76 88 88 76 87 87 76 86 85 75 84 84 61 69 69 68

Nucla 46 47 47 47 44 47 47 46 46 46 45 43 45 45 44 44 44 44 46 46

PEGS 14 12 12 13 12 12 15 15 14 16 15 15 17 15 17 17 18 14 14 14

San Juan 3 10 10 10 10 10 10 10 10 10 10 10 10 11 11 10 11 11 10 10 10

Springerville 98 113 114 109 114 114 109 114 113 99 112 112 98 111 111 106 110 108 93 97

Burlington 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Burlington 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Knutson 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 1 1 1 1 1 1

Knutson 2 0 0 0 0 0 0 0 0 1 1 1 0 1 1 1 1 1 1 2 1

Limon 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Limon 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Pyramid 1 1 1 0 1 0 0 0 0 0 1 0 0 1 1 0 1 1 1 1 0

Pyramid 2 1 1 0 1 0 0 0 1 0 1 0 1 1 2 1 2 1 1 1 1

Pyramid 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Pyramid 4 0 1 0 1 0 1 0 1 0 2 1 1 2 2 1 2 2 2 1 1

Rifle 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1

Shafer 3 3 5 2 2 2 2 2 2 2 2 2 2 3 3 3 3 3 3 3

Brush 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

100 MW RECIP 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 2

200 MW RECIP 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 2 2 2 2 2

Total 412 435 445 436 435 449 443 448 451 434 441 445 435 446 455 445 427 424 417 419

Table 33 - Business Default Scenario (BDS) Case PM Output (tons) 
Electric Resource Plan Annual Progress Report 

Tri-State Generation and Transmission Association, Inc. 58

Thermal Unit 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032

Craig 1 324 326 359 369 317 360 377 364 364 373 346 383 382 368 386 387 340 372 377 382

Craig 2 243 293 311 262 313 313 327 352 324 330 324 350 338 357 359 346 359 341 346 352

Craig 3 1499 1595 1443 1715 1694 1608 1764 1779 1617 1739 1682 1510 1730 1734 1651 1732 1715 1581 1676 1693

LRS 2 729 867 846 748 867 846 746 865 859 735 850 848 740 837 833 731 781 776 780 784

LRS 3 850 738 872 852 750 872 872 748 863 859 750 851 845 740 837 833 603 687 687 671

Nucla 464 467 467 468 438 467 467 465 461 459 456 427 450 448 445 444 440 437 457 458

PEGS 813 671 721 740 707 692 869 863 817 922 844 871 1011 870 1012 987 1029 803 803 809

San Juan 3 122 123 122 123 122 123 123 123 122 124 123 119 131 131 128 135 132 123 123 123

Springerville 1430 1653 1668 1600 1669 1669 1595 1667 1655 1450 1641 1640 1432 1622 1616 1543 1603 1582 1360 1420

Burlington 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

Burlington 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Knutson 1 0 0 0 0 0 0 0 0 1 2 3 1 2 2 3 3 3 2 4 3

Knutson 2 0 0 0 0 0 0 0 0 3 2 4 1 3 3 4 4 5 4 5 4

Limon 1 0 0 0 0 0 0 0 0 0 1 1 0 0 0 1 1 1 1 1 1

Limon 2 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 1 0 1 0

Pyramid 1 9 8 0 9 0 4 3 5 0 15 2 7 11 14 8 20 14 10 8 6

Pyramid 2 11 12 0 6 0 4 1 6 1 13 4 7 12 16 7 17 9 11 9 7

Pyramid 3 2 2 2 2 2 2 2 2 2 3 2 2 2 2 2 2 2 2 2 2

Pyramid 4 0 8 2 10 1 5 5 8 5 20 7 11 16 20 14 24 17 18 14 12

Rifle 0 0 0 0 0 0 0 0 0 0 1 0 1 0 1 2 2 2 3 2

Shafer 61 69 102 51 38 53 45 41 44 48 51 53 53 54 64 66 69 63 70 58

Brush 2 4 6 9 6 2 1 3 0 0 0 0 0 0 0 0 0 0 0 0 0

100 MW RECIP 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 111 137 244

200 MW RECIP 0 0 0 0 0 0 0 0 0 0 0 125 144 171 199 239 241 223 266 268

Total 6562 6840 6924 6962 6921 7019 7201 7290 7141 7095 7093 7208 7304 7391 7572 7519 7366 7151 7129 7297

Table 34 - Business Default Scenario (BDS) Case Water Consumption (1,000,000 of gallons) 
Electric Resource Plan Annual Progress Report 

Tri-State Generation and Transmission Association, Inc. 59

Thermal 

Unit

2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032

Craig 1 674 664 721 731 594 658 702 689 634 676 643 706 706 687 722 751 639 705 716 694

Craig 2 501 586 611 492 547 528 564 608 517 547 553 604 591 617 632 656 648 620 636 607

Craig 3 2853 2984 2642 3140 2922 2661 3035 3092 2531 2906 2832 2553 3018 3039 2914 3184 3064 2816 3028 2869

LRS 2 1531 1821 1776 1571 1821 1776 1566 1817 1803 1543 1785 1781 1554 1758 1749 1535 1732 1723 1598 1599

LRS 3 1893 1643 1941 1898 1670 1941 1941 1667 1922 1911 1673 1898 1884 1648 1865 1861 1622 1819 1527 1477

Nucla 748 752 753 755 705 753 753 751 742 739 734 688 726 722 717 715 709 704 736 736

PEGS 1102 863 902 827 776 737 810 805 807 842 838 861 1001 843 1021 1121 1110 1028 1128 971

San Juan 3 240 242 241 242 241 242 241 241 241 242 241 228 244 243 241 250 244 241 244 240

Springerville 2652 3066 3093 2967 3096 3095 2959 3091 3057 2681 3038 3039 2652 3007 2996 2862 2969 2956 2827 2863

Burlington 1 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5

Burlington 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Knutson 1 0 0 0 0 0 0 0 0 1 1 3 3 4 5 8 11 11 12 18 10

Knutson 2 0 0 0 0 0 0 0 0 6 2 5 8 7 8 14 15 15 17 22 15

Limon 1 0 0 0 0 0 0 0 0 0 0 1 1 2 3 5 6 7 8 13 6

Limon 2 0 1 3 0 0 0 0 0 0 0 1 0 1 2 4 5 6 6 11 5

Pyramid 1 14 12 0 14 0 5 5 7 0 20 0 7 13 16 1 15 1 10 10 2

Pyramid 2 12 11 0 9 0 6 0 7 0 9 0 7 3 15 1 12 4 13 13 6

Pyramid 3 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4

Pyramid 4 0 13 0 15 0 8 4 8 0 21 1 10 15 25 11 28 14 26 26 13

Rifle 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 2 2 3 6 3

Shafer 52 56 86 37 22 34 23 18 22 18 25 60 31 34 56 50 53 78 69 54

Brush 2 3 4 6 2 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0

200 MW 

RECIP

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 219

Total 12283 12728 12784 12710 12402 12452 12614 12809 12290 12166 12384 12461 12460 12682 12968 13087 12860 12795 12636 12399

Table 35 - Business Default Scenario (BDS) Max DSM Case CO2 Output (1,000 of tons) 
Electric Resource Plan Annual Progress Report 

Tri-State Generation and Transmission Association, Inc. 60

Thermal Unit 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032

Craig 1 160 158 171 174 141 156 167 164 151 161 153 168 168 163 172 178 152 168 170 165

Craig 2 146 171 179 144 160 154 165 178 151 160 162 177 173 180 185 192 189 181 186 177

Craig 3 1565 1637 1449 1723 1603 1460 1665 1696 1388 1594 1554 1400 1655 1667 1599 1747 1681 1545 1661 1574

LRS 2 1103 1312 1279 1132 1312 1279 1128 1309 1299 1112 1286 1283 1119 1267 1260 1106 1248 1242 1151 1152

LRS 3 1601 1390 1642 1606 1413 1642 1642 1410 1626 1617 1415 1606 1593 1394 1578 1574 1372 1538 1291 1250

Nucla 1086 1092 1093 1096 1024 1092 1093 1089 1077 1072 1065 998 1053 1048 1041 1038 1029 1021 1068 1069

PEGS 681 534 557 511 480 456 501 498 499 521 518 532 619 521 632 693 686 636 698 601

San Juan 3 275 277 276 277 276 277 276 277 276 277 276 261 279 278 277 286 279 277 280 275

Springerville 1242 1437 1449 1390 1451 1450 1386 1448 1432 1256 1424 1424 1243 1409 1404 1341 1391 1385 1324 1341

Burlington 1 5 4 5 4 5 4 5 4 5 4 4 5 5 5 5 5 5 5 5 5

Burlington 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Knutson 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Knutson 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Limon 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Limon 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Pyramid 1 1 1 0 1 0 0 0 0 0 1 0 0 1 1 0 1 0 0 0 0

Pyramid 2 1 1 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 1 1 0

Pyramid 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Pyramid 4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0

Rifle 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Shafer 9 10 15 6 4 6 4 3 4 3 4 10 5 6 10 9 9 13 12 9

Brush 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

200 MW RECIP 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 171

Total 7875 8023 8116 8065 7867 7978 8032 8077 7907 7779 7861 7865 7914 7940 8161 8171 8042 8012 7849 7791

Table 36 - Business Default Scenario (BDS) Max DSM Case SO2 Output (tons) 
Electric Resource Plan Annual Progress Report 

Tri-State Generation and Transmission Association, Inc. 61

Thermal Unit 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032

Craig 1 0.9 0.9 1.0 1.0 0.8 0.9 1.0 0.9 0.9 0.9 0.9 1.0 1.0 0.9 1.0 1.0 0.9 1.0 1.0 0.9

Craig 2 0.7 0.8 0.8 0.7 0.7 0.7 0.7 0.8 0.7 0.7 0.7 0.8 0.8 0.8 0.8 0.9 0.9 0.8 0.8 0.8

Craig 3 5.3 5.6 4.9 5.9 5.5 5.0 5.7 5.8 4.7 5.4 5.3 4.8 5.6 5.7 5.4 5.9 5.7 5.3 5.6 5.4

LRS 2 2.0 2.4 2.3 2.0 2.4 2.3 2.0 2.4 2.3 2.0 2.3 2.3 2.0 2.3 2.3 2.0 2.3 2.2 2.1 2.1

LRS 3 2.5 2.2 2.5 2.5 2.2 2.5 2.5 2.2 2.5 2.5 2.2 2.5 2.5 2.2 2.4 2.4 2.1 2.4 2.0 1.9

Nucla 1.5 1.5 1.5 1.5 1.4 1.5 1.5 1.5 1.5 1.5 1.5 1.4 1.4 1.4 1.4 1.4 1.4 1.4 1.5 1.5

PEGS 1.9 1.5 1.6 1.5 1.4 1.3 1.4 1.4 1.4 1.5 1.5 1.5 1.8 1.5 1.8 2.0 1.9 1.8 2.0 1.7

San Juan 3 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.5 0.4 0.4 0.4 0.4

Springerville 1.0 1.1 1.2 1.1 1.2 1.2 1.1 1.2 1.1 1.0 1.1 1.1 1.0 1.1 1.1 1.1 1.1 1.1 1.1 1.1

Burlington 1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Burlington 2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Knutson 1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Knutson 2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Limon 1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Limon 2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Pyramid 1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Pyramid 2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Pyramid 3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Pyramid 4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Rifle 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Shafer 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Brush 2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

200 MW RECIP 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.3

Total 16.3 16.4 16.3 16.6 15.9 15.9 16.5 16.6 15.6 16.0 16.0 15.8 16.6 16.5 16.8 17.3 16.8 16.6 16.7 16.2

Table 37 - Business Default Scenario (BDS) Max DSM Case NOx Output (1,000 of tons) 
Electric Resource Plan Annual Progress Report 

Tri-State Generation and Transmission Association, Inc. 62

Thermal Unit 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032

Craig 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

Craig 2 0 0 1 0 0 0 0 1 0 0 0 1 0 1 1 1 1 1 1 1

Craig 3 21 22 19 23 21 19 22 23 18 21 21 19 22 22 21 23 22 21 22 21

LRS 2 70 83 81 72 83 81 72 83 82 71 82 81 71 80 80 70 79 79 73 73

LRS 3 82 71 84 82 72 84 84 72 83 82 72 82 81 71 80 80 70 78 66 64

Nucla 38 39 39 39 36 39 39 39 38 38 38 35 37 37 37 37 36 36 38 38

PEGS 10 8 8 8 7 7 7 7 7 8 8 8 9 8 9 10 10 10 10 9

San Juan 3 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

Springerville 75 87 88 84 88 88 84 88 87 76 86 87 76 86 85 81 85 84 80 82

Burlington 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Burlington 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Knutson 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Knutson 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Limon 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Limon 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Pyramid 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Pyramid 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Pyramid 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Pyramid 4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Rifle 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Shafer 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Brush 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

200 MW RECIP 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6

Total 299 312 322 310 310 320 310 314 319 299 309 314 299 307 316 305 305 310 292 294

Table 38 - Business Default Scenario (BDS) Max DSM Case Hg Output (lbs) 

 
Electric Resource Plan Annual Progress Report 

Tri-State Generation and Transmission Association, Inc. 63

Thermal Unit 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032

Craig 1 17 17 19 19 15 17 18 18 16 18 17 18 18 18 19 19 17 18 19 18

Craig 2 10 12 12 10 11 10 11 12 10 11 11 12 12 12 12 13 13 12 13 12

Craig 3 51 53 47 56 52 47 54 55 45 52 50 45 54 54 52 56 54 50 54 51

LRS 2 74 88 85 76 88 85 75 87 87 74 86 86 75 84 84 74 83 83 77 77

LRS 3 86 74 88 86 76 88 88 76 87 87 76 86 85 75 84 84 73 82 69 67

Nucla 46 47 47 47 44 47 47 46 46 46 45 43 45 45 44 44 44 43 45 46

PEGS 13 10 11 10 9 9 10 9 10 10 10 10 12 10 12 13 13 12 13 11

San Juan 3 10 10 10 10 10 10 10 10 10 10 10 9 10 10 10 10 10 10 10 10

Springerville 98 113 114 109 114 114 109 114 113 99 112 112 98 111 110 106 109 109 104 106

Burlington 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Burlington 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Knutson 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1

Knutson 2 0 0 0 0 0 0 0 0 1 0 0 1 1 1 1 1 1 1 2 1

Limon 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0

Limon 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0

Pyramid 1 1 0 0 0 0 0 0 0 0 1 0 0 0 1 0 1 0 0 0 0

Pyramid 2 1 1 0 1 0 0 0 0 0 1 0 0 0 1 0 1 0 1 1 0

Pyramid 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Pyramid 4 0 1 0 1 0 0 0 0 0 1 0 0 1 1 1 1 1 1 1 1

Rifle 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1

Shafer 2 3 4 2 1 2 1 1 1 1 1 3 1 2 3 2 3 4 3 3

Brush 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

200 MW RECIP 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1

Total 409 429 437 426 420 430 424 430 425 409 419 427 413 425 435 429 424 431 416 405

Table 39 - Business Default Scenario (BDS) Max DSM Case PM Output (tons) 
Electric Resource Plan Annual Progress Report 

Tri-State Generation and Transmission Association, Inc. 64

Thermal Unit 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032

Craig 1 316 312 339 343 279 309 330 323 298 318 302 332 332 322 339 353 300 331 336 326

Craig 2 231 270 282 227 252 243 260 281 238 252 255 278 273 285 292 302 299 286 293 280

Craig 3 1472 1540 1363 1621 1508 1373 1566 1596 1306 1500 1462 1317 1557 1568 1504 1643 1581 1453 1563 1480

LRS 2 729 867 846 748 867 846 746 865 859 735 850 848 740 837 833 731 825 821 761 762

LRS 3 850 738 872 852 750 872 872 748 863 858 751 852 846 740 837 835 728 816 685 663

Nucla 464 467 467 468 437 467 467 465 460 458 455 427 450 448 445 443 439 436 456 457

PEGS 755 591 618 566 532 505 555 551 553 577 574 590 685 577 700 768 760 704 773 665

San Juan 3 122 123 122 123 122 123 122 123 122 123 122 116 124 123 123 127 124 123 124 122

Springerville 1429 1653 1667 1599 1669 1668 1595 1666 1648 1445 1638 1638 1430 1621 1615 1543 1600 1593 1524 1543

Burlington 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

Burlington 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Knutson 1 0 0 0 0 0 0 0 0 0 0 1 1 1 1 2 3 3 3 5 3

Knutson 2 0 0 0 0 0 0 0 0 2 0 1 2 2 2 4 4 4 5 6 4

Limon 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1

Limon 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 0

Pyramid 1 9 7 0 8 0 3 3 4 0 12 0 4 8 10 0 9 1 6 6 1

Pyramid 2 8 7 0 6 0 4 0 4 0 6 0 4 2 10 0 8 3 9 9 4

Pyramid 3 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2

Pyramid 4 0 7 0 8 0 4 2 4 0 11 1 5 8 14 6 15 8 14 14 7

Rifle 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 2 2 3 6 3

Shafer 53 57 87 37 22 34 24 19 22 19 25 61 31 35 57 51 54 79 70 55

Brush 2 3 4 5 2 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0

200 MW RECIP 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 124

Total 6443 6646 6671 6613 6442 6455 6546 6654 6374 6317 6441 6479 6492 6598 6762 6842 6736 6688 6636 6503

Table 40 - Business Default Scenario (BDS) Max DSM Case Water Consumption (1,000,000 of gallons) 
Electric Resource Plan Annual Progress Report 

Tri-State Generation and Transmission Association, Inc. 65

Thermal 

Unit

2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032

Craig 1 693 672 754 782 674 766 801 774 787 797 818 875 870 832 871 872 743 852 862 867

Craig 2 532 605 667 570 680 681 707 761 719 716 802 841 804 846 848 813 811 819 835 842

Craig 3 2914 2991 2755 3296 3264 3118 3416 3441 3205 3385 3476 3072 3477 3465 3303 3451 3383 3232 3405 3419

LRS 2 1531 1821 1776 1571 1821 1776 1566 1817 1803 1543 1785 1781 1554 1758 1749 1535 1635 1627 1637 1647

LRS 3 1893 1643 1941 1899 1670 1941 1941 1667 1922 1912 1673 1899 1884 1648 1865 1861 1337 1526 1529 1536

Nucla 748 752 753 755 705 753 753 751 743 739 735 688 724 719 714 712 707 702 735 737

PEGS 1202 1055 1066 1079 1029 998 1241 1211 1150 1280 945 978 1126 965 1118 1157 1045 693 750 719

San Juan 3 240 242 240 242 241 241 240 241 240 242 241 227 241 240 240 240 241 240 241 241

Springerville 2653 3059 3090 2968 3096 3092 2956 3080 2979 2653 2969 2976 2610 2967 2954 2842 2895 2687 2516 2521

Burlington 1 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5

Burlington 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Knutson 1 0 0 0 0 0 0 0 0 4 6 3 3 7 8 11 14 12 1 2 2

Knutson 2 0 0 0 0 0 0 0 0 10 7 5 6 9 11 17 18 17 2 4 5

Limon 1 0 0 0 0 0 0 0 0 3 4 2 1 3 4 7 9 9 0 1 1

Limon 2 0 2 3 0 0 0 0 0 2 3 1 0 3 3 5 7 6 0 0 0

Pyramid 1 16 14 0 15 0 7 6 8 1 26 5 18 24 30 21 43 37 67 67 98

Pyramid 2 16 18 0 9 0 6 2 9 2 21 3 12 20 26 16 33 20 51 57 59

Pyramid 3 4 4 4 4 4 4 4 4 4 6 4 4 4 4 4 4 4 4 4 4

Pyramid 4 0 15 4 20 3 10 10 15 9 39 15 28 40 46 43 59 50 82 97 121

Rifle 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 2 3 1 2 4

Shafer 62 72 103 53 39 53 45 40 44 48 31 40 42 43 53 63 60 40 58 67

Brush 2 4 7 10 6 2 1 4 0 0 0 0 0 0 0 0 0 0 0 0 0

1x1 C-C 0 0 0 0 0 0 0 0 0 0 262 341 369 381 417 470 364 218 243 261

2x1 C-C 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 461 535 594

Total 12512 12977 13171 13273 13232 13454 13697 13823 13631 13433 13780 13793 13815 14002 14265 14211 13383 13310 13586 13749

Table 41 - Business Default Scenario (BDS) 5% Yearly Coal Increase Case CO2 Output (1,000 of tons) 
Electric Resource Plan Annual Progress Report 

Tri-State Generation and Transmission Association, Inc. 66

Thermal Unit 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032

Craig 1 165 160 179 186 160 182 190 184 187 189 194 208 207 198 207 207 177 202 205 206

Craig 2 155 177 195 166 199 199 207 222 210 209 234 246 235 247 248 237 237 239 244 246

Craig 3 1598 1641 1511 1808 1791 1711 1874 1888 1758 1857 1907 1685 1907 1901 1812 1893 1856 1773 1868 1876

LRS 2 1103 1312 1279 1132 1312 1279 1128 1309 1299 1112 1286 1283 1119 1267 1260 1106 1178 1172 1179 1186

LRS 3 1601 1390 1642 1606 1413 1642 1642 1410 1626 1618 1415 1606 1594 1394 1578 1574 1131 1291 1294 1299

Nucla 1085 1092 1092 1096 1024 1093 1093 1089 1078 1073 1067 998 1050 1043 1037 1034 1026 1019 1066 1069

PEGS 743 652 659 667 636 617 767 749 711 792 585 605 696 597 692 716 646 429 464 445

San Juan 3 275 277 276 277 276 277 275 276 275 277 276 260 276 276 275 276 276 275 276 276

Springerville 1243 1433 1448 1391 1451 1449 1385 1443 1396 1243 1391 1394 1223 1390 1384 1332 1357 1259 1179 1181

Burlington 1 5 4 5 4 5 4 5 4 5 4 4 5 5 5 5 5 5 5 5 5

Burlington 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Knutson 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Knutson 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Limon 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Limon 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Pyramid 1 1 1 0 1 0 0 0 0 0 1 0 1 1 1 1 2 2 3 3 5

Pyramid 2 1 1 0 0 0 0 0 0 0 1 0 1 1 1 1 2 1 3 3 3

Pyramid 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Pyramid 4 0 0 0 0 0 0 0 0 0 1 0 1 1 1 1 1 1 1 2 2

Rifle 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Shafer 11 12 18 9 7 9 8 7 7 8 5 7 7 7 9 11 10 7 10 11

Brush 2 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

1x1 C-C 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

2x1 C-C 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Total 7987 8153 8305 8345 8272 8464 8575 8583 8553 8386 8366 8299 8322 8328 8509 8395 7901 7679 7798 7812

Table 42 - Business Default Scenario (BDS) 5% Yearly Coal Increase Case SO2 Output (tons) 
Electric Resource Plan Annual Progress Report 

Tri-State Generation and Transmission Association, Inc. 67

Thermal Unit 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032

Craig 1 0.9 0.9 1.0 1.1 0.9 1.0 1.1 1.1 1.1 1.1 1.1 1.2 1.2 1.1 1.2 1.2 1.0 1.2 1.2 1.2

Craig 2 0.7 0.8 0.9 0.8 0.9 0.9 0.9 1.0 1.0 1.0 1.1 1.1 1.1 1.1 1.1 1.1 1.1 1.1 1.1 1.1

Craig 3 5.4 5.6 5.1 6.1 6.1 5.8 6.4 6.4 6.0 6.3 6.5 5.7 6.5 6.5 6.2 6.4 6.3 6.0 6.4 6.4

LRS 2 2.0 2.4 2.3 2.0 2.4 2.3 2.0 2.4 2.3 2.0 2.3 2.3 2.0 2.3 2.3 2.0 2.1 2.1 2.1 2.1

LRS 3 2.5 2.2 2.5 2.5 2.2 2.5 2.5 2.2 2.5 2.5 2.2 2.5 2.5 2.2 2.4 2.4 1.8 2.0 2.0 2.0

Nucla 1.5 1.5 1.5 1.5 1.4 1.5 1.5 1.5 1.5 1.5 1.5 1.4 1.4 1.4 1.4 1.4 1.4 1.4 1.5 1.5

PEGS 2.1 1.9 1.9 1.9 1.8 1.8 2.2 2.1 2.0 2.2 1.7 1.7 2.0 1.7 2.0 2.0 1.8 1.2 1.3 1.3

San Juan 3 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4

Springerville 1.0 1.1 1.2 1.1 1.2 1.2 1.1 1.1 1.1 1.0 1.1 1.1 1.0 1.1 1.1 1.1 1.1 1.0 0.9 0.9

Burlington 1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Burlington 2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Knutson 1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Knutson 2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Limon 1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Limon 2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Pyramid 1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.1 0.1

Pyramid 2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Pyramid 3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Pyramid 4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.0 0.1 0.1 0.1

Rifle 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Shafer 0.0 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Brush 2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

1x1 C-C 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

2x1 C-C 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Total 16.7 16.8 16.9 17.5 17.3 17.5 18.3 18.3 18.0 18.1 17.9 17.6 18.2 18.0 18.3 18.3 17.2 16.7 17.2 17.3

Table 43 - Business Default Scenario (BDS) 5% Yearly Coal Increase Case NOx Output (1000 of tons) 
Electric Resource Plan Annual Progress Report 

Tri-State Generation and Transmission Association, Inc. 68

Thermal Unit 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032

Craig 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

Craig 2 0 1 1 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

Craig 3 21 22 20 24 24 23 25 25 23 25 25 22 25 25 24 25 25 24 25 25

LRS 2 70 83 81 72 83 81 72 83 82 71 82 81 71 80 80 70 75 74 75 75

LRS 3 82 71 84 82 72 84 84 72 83 82 72 82 81 71 80 80 58 66 66 66

Nucla 38 39 39 39 36 39 39 39 38 38 38 35 37 37 37 37 36 36 38 38

PEGS 11 10 10 10 10 9 11 11 11 12 9 9 10 9 10 11 10 6 7 7

San Juan 3 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

Springerville 76 87 88 84 88 88 84 88 85 76 85 85 74 84 84 81 82 76 72 72

Burlington 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Burlington 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Knutson 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Knutson 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Limon 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Limon 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Pyramid 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Pyramid 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Pyramid 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Pyramid 4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Rifle 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Shafer 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Brush 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

1x1 C-C 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

2x1 C-C 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Total 300 314 324 314 315 326 317 320 325 306 313 318 303 310 319 307 288 286 285 286

Table 44 - Business Default Scenario (BDS) 5% Yearly Coal Increase Case Hg Output (lbs) 
Electric Resource Plan Annual Progress Report 

Tri-State Generation and Transmission Association, Inc. 69

Thermal Unit 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032

Craig 1 18 17 20 20 17 20 21 20 20 21 21 23 23 22 23 23 19 22 22 22

Craig 2 11 12 13 11 13 13 14 15 14 14 16 17 16 17 17 16 16 16 16 17

Craig 3 52 53 49 58 58 55 61 61 57 60 62 55 62 61 59 61 60 57 60 61

LRS 2 74 88 85 76 88 85 75 87 87 74 86 86 75 84 84 74 79 78 79 79

LRS 3 86 74 88 86 76 88 88 76 87 87 76 86 85 75 84 84 61 69 69 70

Nucla 46 46 47 47 44 47 47 46 46 46 45 43 45 44 44 44 44 43 45 46

PEGS 14 12 13 13 12 12 15 14 14 15 11 12 13 11 13 14 12 8 9 8

San Juan 3 10 10 10 10 10 10 10 10 10 10 10 9 10 10 10 10 10 10 10 10

Springerville 98 113 114 109 114 114 109 114 110 98 109 110 96 109 109 105 107 99 93 93

Burlington 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Burlington 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Knutson 1 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 0 0 0

Knutson 2 0 0 0 0 0 0 0 0 1 1 0 0 1 1 1 1 1 0 0 0

Limon 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Limon 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Pyramid 1 1 1 0 1 0 0 0 0 0 1 0 1 1 1 1 2 1 2 2 4

Pyramid 2 1 1 0 1 0 0 0 1 0 1 0 1 1 2 1 2 1 3 4 4

Pyramid 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Pyramid 4 0 1 0 1 0 1 1 1 0 2 1 1 2 2 2 3 3 4 5 6

Rifle 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 1

Shafer 3 3 5 3 2 3 2 2 2 2 1 2 2 2 3 3 3 2 3 3

Brush 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

1x1 C-C 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

2x1 C-C 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Total 413 433 444 436 434 448 442 447 449 433 440 444 433 444 453 444 419 416 420 424

Table 45 - Business Default Scenario (BDS) 5% Yearly Coal Increase Case PM Output (tons) 
Electric Resource Plan Annual Progress Report 

Tri-State Generation and Transmission Association, Inc. 70

Thermal Unit 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032

Craig 1 326 316 354 367 316 360 376 363 370 374 384 411 409 391 409 409 349 400 405 407

Craig 2 245 279 307 263 314 314 326 351 332 330 370 388 371 390 391 375 374 378 385 388

Craig 3 1504 1544 1422 1701 1684 1609 1763 1776 1654 1747 1794 1585 1794 1788 1705 1781 1746 1668 1757 1764

LRS 2 729 867 846 748 867 846 746 865 859 735 850 848 740 837 833 731 779 775 779 784

LRS 3 850 738 872 852 750 872 872 748 863 859 751 852 846 740 837 835 600 685 687 690

Nucla 464 466 467 468 438 467 467 465 461 458 456 426 449 446 443 442 438 435 456 457

PEGS 824 722 730 739 705 684 850 830 788 877 648 670 771 661 766 793 716 475 514 493

San Juan 3 122 123 122 123 122 123 122 122 122 123 122 115 122 122 122 122 122 122 123 123

Springerville 1430 1649 1666 1600 1669 1667 1593 1660 1606 1430 1601 1604 1407 1599 1592 1532 1561 1448 1356 1359

Burlington 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

Burlington 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Knutson 1 0 0 0 0 0 0 0 0 1 2 1 1 2 2 3 4 3 0 1 1

Knutson 2 0 0 0 0 0 0 0 0 3 2 1 2 3 3 5 5 5 0 1 1

Limon 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 1 1 1 0 0 0

Limon 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0

Pyramid 1 10 9 0 9 0 4 3 5 0 16 3 11 15 18 13 26 23 40 41 59

Pyramid 2 11 12 0 6 0 4 2 6 1 14 2 8 13 17 11 22 14 34 38 39

Pyramid 3 2 2 2 2 2 2 2 2 2 3 2 2 2 2 2 2 2 2 2 2

Pyramid 4 0 8 2 11 1 6 5 8 5 21 8 15 22 25 23 31 27 44 52 65

Rifle 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 2 3 1 2 4

Shafer 63 73 104 54 39 54 46 41 45 49 32 40 42 44 54 64 61 40 59 68

Brush 2 4 7 10 6 2 1 3 0 0 0 0 0 0 0 0 0 0 0 0 0

1x1 C-C 0 0 0 0 0 0 0 0 0 0 351 458 495 512 560 632 489 293 326 351

2x1 C-C 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 619 719 798

Total 6582 6816 6905 6950 6911 7012 7177 7245 7112 7042 7377 7438 7504 7599 7772 7811 7312 7462 7703 7853

Table 46 - Business Default Scenario (BDS) 5% Yearly Coal Increase Case Water Consumption (1,000,000 of gallons) 
Electric Resource Plan Annual Progress Report 

Tri-State Generation and Transmission Association, Inc. 71

Thermal Unit 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032

Craig 1 666 737 759 271 271 271 271 271 271 271 271 271 271 271 271 271 271 271 271 271

Craig 2 678 751 774 276 276 276 276 276 276 276 276 276 276 276 276 276 276 276 276 276

Craig 3 2989 2970 2625 1512 1410 1470 1062 1117 1157 1063 1036 1137 1126 1035 1141 1185 1115 1035 1035 1036

LRS 2 1658 1685 1803 1726 1534 1310 1587 1157 1034 1005 984 1088 999 918 1082 975 923 847 760 667

LRS 3 1759 1787 1913 1831 1627 1390 1683 1228 1097 1066 1044 1154 1060 974 1147 1034 979 899 806 708

Nucla 748 752 752 471 471 471 471 471 471 471 471 471 471 471 471 471 471 471 471 471

PEGS 1430 1302 1441 645 645 645 645 645 645 645 645 645 645 645 645 645 645 645 645 645

San Juan 3 239 242 242 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79

Springerville 2658 3062 3076 3080 3068 3069 2356 2414 2497 2414 2352 2498 2455 2591 2581 2590 2618 2605 2432 2340

Burlington 1 5 5 5 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Burlington 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Knutson 1 0 0 0 0 0 0 0 0 1 2 0 0 1 0 0 0 0 0 0 0

Knutson 2 0 0 0 0 0 0 0 0 6 2 0 0 1 0 0 0 0 0 0 0

Limon 1 0 4 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Limon 2 0 5 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Pyramid 1 12 23 10 90 98 102 0 0 0 13 51 0 7 42 0 0 35 64 96 119

Pyramid 2 11 21 9 82 89 93 0 0 0 12 46 0 6 38 0 0 32 58 87 108

Pyramid 3 12 23 10 92 100 104 0 0 0 13 52 0 7 43 0 0 36 66 98 121

Pyramid 4 14 26 11 102 110 115 0 0 0 15 58 0 8 48 0 0 40 73 108 134

Rifle 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Shafer 98 117 117 592 691 664 0 0 0 49 122 0 0 59 0 0 0 113 276 453

Brush 2 7 10 9 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

1x1 C-C 0 0 0 0 0 0 1186 1596 1720 1767 1779 1629 1744 1761 1550 1687 1733 1755 1775 1790

Total 12985 13522 13559 10852 10470 10060 9616 9255 9254 9164 9268 9249 9156 9254 9244 9213 9253 9259 9216 9220

Table 47 - Governor’s Energy Office Case CO2 Output (1,000 of tons) 
Electric Resource Plan Annual Progress Report 

Tri-State Generation and Transmission Association, Inc. 72

Thermal Unit 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032

Craig 1 158 175 180 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64 64

Craig 2 198 219 226 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81 81

Craig 3 1640 1629 1440 830 774 807 583 613 635 583 569 624 618 568 626 650 612 568 568 569

LRS 2 1195 1214 1299 1244 1105 944 1143 834 745 724 709 784 720 662 779 702 665 611 547 481

LRS 3 1488 1512 1618 1549 1377 1176 1424 1039 928 901 883 976 897 824 970 874 828 760 682 599

Nucla 1086 1092 1092 683 683 683 683 683 683 683 683 683 683 683 683 683 683 683 683 683

PEGS 884 805 891 399 399 399 399 399 399 399 399 399 399 399 399 399 399 399 399 399

San Juan 3 274 277 278 91 91 91 91 91 91 91 91 91 91 91 91 91 91 91 91 91

Springerville 1245 1435 1441 1443 1438 1438 1104 1131 1170 1131 1102 1171 1150 1214 1209 1213 1227 1221 1140 1097

Burlington 1 5 4 5 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Burlington 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Knutson 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Knutson 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Limon 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Limon 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Pyramid 1 1 1 0 4 5 5 0 0 0 1 2 0 0 2 0 0 2 3 5 6

Pyramid 2 1 1 0 4 5 5 0 0 0 1 2 0 0 2 0 0 2 3 4 6

Pyramid 3 1 1 0 4 5 5 0 0 0 1 3 0 0 2 0 0 2 3 5 6

Pyramid 4 0 0 0 2 2 2 0 0 0 0 1 0 0 1 0 0 1 1 2 2

Rifle 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Shafer 17 20 20 101 118 113 0 0 0 8 21 0 0 10 0 0 0 19 47 77

Brush 2 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

1x1 C-C 0 0 0 0 0 0 1 1 2 2 2 1 2 2 1 2 2 2 2 2

Total 8192 8387 8492 6500 6146 5812 5573 4936 4797 4670 4612 4874 4706 4605 4905 4760 4657 4510 4320 4161

Table 48 - Governor’s Energy Office Case SO2 Output (tons) 
Electric Resource Plan Annual Progress Report 

Tri-State Generation and Transmission Association, Inc. 73

Thermal Unit 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032

Craig 1 0.9 1.0 1.0 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4

Craig 2 0.9 1.0 1.0 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4

Craig 3 5.6 5.5 4.9 2.8 2.6 2.7 2.0 2.1 2.2 2.0 1.9 2.1 2.1 1.9 2.1 2.2 2.1 1.9 1.9 1.9

LRS 2 2.2 2.2 2.3 2.2 2.0 1.7 2.1 1.5 1.3 1.3 1.3 1.4 1.3 1.2 1.4 1.3 1.2 1.1 1.0 0.9

LRS 3 2.3 2.3 2.5 2.4 2.1 1.8 2.2 1.6 1.4 1.4 1.4 1.5 1.4 1.3 1.5 1.4 1.3 1.2 1.1 0.9

Nucla 1.5 1.5 1.5 0.9 0.9 0.9 0.9 0.9 0.9 0.9 0.9 0.9 0.9 0.9 0.9 0.9 0.9 0.9 0.9 0.9

PEGS 2.5 2.3 2.5 1.1 1.1 1.1 1.1 1.1 1.1 1.1 1.1 1.1 1.1 1.1 1.1 1.1 1.1 1.1 1.1 1.1

San Juan 3 0.4 0.4 0.4 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1

Springerville 1.0 1.1 1.1 1.1 1.1 1.1 0.9 0.9 0.9 0.9 0.9 0.9 0.9 1.0 1.0 1.0 1.0 1.0 0.9 0.9

Burlington 1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Burlington 2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Knutson 1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Knutson 2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Limon 1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Limon 2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Pyramid 1 0.0 0.0 0.0 0.1 0.1 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.1 0.1

Pyramid 2 0.0 0.0 0.0 0.1 0.1 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.1

Pyramid 3 0.0 0.0 0.0 0.1 0.1 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.1 0.1

Pyramid 4 0.0 0.0 0.0 0.1 0.1 0.1 0.0 0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.1 0.1

Rifle 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Shafer 0.1 0.1 0.1 0.3 0.4 0.4 0.0 0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.1 0.2

Brush 2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

1x1 C-C 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1

Total 17.4 17.6 17.5 12.2 11.6 11.1 10.1 9.1 8.9 8.7 8.8 9.0 8.8 8.6 9.0 8.8 8.7 8.5 8.4 8.3

Table 49 - Governor’s Energy Office Case NOx Output (1,000 of tons) 
Electric Resource Plan Annual Progress Report 

Tri-State Generation and Transmission Association, Inc. 74

Thermal Unit 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032

Craig 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Craig 2 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Craig 3 22 22 19 11 10 11 8 8 8 8 8 8 8 8 8 9 8 8 8 8

LRS 2 76 77 82 79 70 60 73 53 47 46 45 50 46 42 49 45 42 39 35 31

LRS 3 76 77 82 79 70 60 73 53 47 46 45 50 46 42 49 45 42 39 35 31

Nucla 38 39 39 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24

PEGS 13 12 13 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6

San Juan 3 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Springerville 76 87 88 88 87 87 67 69 71 69 67 71 70 74 73 74 75 74 69 67

Burlington 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Burlington 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Knutson 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Knutson 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Limon 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Limon 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Pyramid 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Pyramid 2 0 0 0 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 1 1

Pyramid 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Pyramid 4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Rifle 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Shafer 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Brush 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

1x1 C-C 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Total 303 316 326 289 270 250 251 214 205 200 196 210 201 197 212 203 199 191 179 168

Table 50 - Governor’s Energy Office Case Hg Output (lbs)
Electric Resource Plan Annual Progress Report 

Tri-State Generation and Transmission Association, Inc. 75

Thermal Unit 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032

Craig 1 17 19 20 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7

Craig 2 13 15 15 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5

Craig 3 53 53 47 27 25 26 19 20 21 19 18 20 20 18 20 21 20 18 18 18

LRS 2 80 81 87 83 74 63 76 56 50 48 47 52 48 44 52 47 44 41 37 32

LRS 3 80 81 87 83 74 63 76 56 50 48 47 52 48 44 52 47 44 41 37 32

Nucla 46 46 46 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29 29

PEGS 17 15 17 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8

San Juan 3 10 10 10 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3

Springerville 98 113 113 114 113 113 87 89 92 89 87 92 91 96 95 95 97 96 90 86

Burlington 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Burlington 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Knutson 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Knutson 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Limon 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Limon 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Pyramid 1 0 1 0 3 4 4 0 0 0 0 2 0 0 2 0 0 1 2 4 4

Pyramid 2 1 1 1 6 6 6 0 0 0 1 3 0 0 3 0 0 2 4 6 7

Pyramid 3 0 1 0 3 3 3 0 0 0 0 2 0 0 1 0 0 1 2 3 4

Pyramid 4 1 1 1 5 6 6 0 0 0 1 3 0 0 2 0 0 2 4 6 7

Rifle 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Shafer 5 6 6 28 33 32 0 0 0 2 6 0 0 3 0 0 0 5 13 22

Brush 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

1x1 C-C 0 0 0 0 0 0 75 102 109 112 113 104 111 112 99 107 110 112 113 114

Total 422 444 450 404 389 368 386 374 374 374 381 373 371 377 370 370 374 377 377 379

Table 51 - Governor’s Energy Office Case PM Output (tons)
Electric Resource Plan Annual Progress Report 

Tri-State Generation and Transmission Association, Inc. 76

Thermal Unit 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032

Craig 1 313 346 357 127 127 127 127 127 127 127 127 127 127 127 127 127 127 127 127 127

Craig 2 313 346 357 127 127 127 127 127 127 127 127 127 127 127 127 127 127 127 127 127

Craig 3 1543 1532 1355 781 728 759 548 576 597 549 535 587 581 534 589 612 575 534 534 535

LRS 2 790 803 859 822 731 624 756 551 492 478 469 518 476 437 515 464 439 404 362 318

LRS 3 790 803 859 822 731 624 756 551 492 478 469 518 476 437 515 464 439 404 362 318

Nucla 464 467 467 292 292 292 292 292 292 292 292 292 292 292 292 292 292 292 292 292

PEGS 980 892 987 442 442 442 442 442 442 442 442 442 442 442 442 442 442 442 442 442

San Juan 3 122 123 123 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40

Springerville 1433 1650 1658 1660 1654 1654 1270 1301 1346 1301 1268 1347 1323 1397 1391 1396 1411 1404 1311 1261

Burlington 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Burlington 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Knutson 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0

Knutson 2 0 0 0 0 0 0 0 0 2 1 0 0 0 0 0 0 0 0 0 0

Limon 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Limon 2 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Pyramid 1 7 14 6 55 59 62 0 0 0 8 31 0 4 26 0 0 21 39 58 72

Pyramid 2 7 14 6 55 59 62 0 0 0 8 31 0 4 26 0 0 21 39 58 72

Pyramid 3 7 14 6 55 59 62 0 0 0 8 31 0 4 26 0 0 21 39 58 72

Pyramid 4 7 14 6 55 59 62 0 0 0 8 31 0 4 26 0 0 21 39 58 72

Rifle 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Shafer 100 119 118 601 701 674 0 0 0 50 124 0 0 60 0 0 0 115 280 460

Brush 2 6 10 9 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

1x1 C-C 0 0 0 0 0 0 1592 2144 2310 2373 2389 2188 2343 2366 2081 2266 2328 2358 2384 2405

Total 6881 7147 7172 5934 5809 5610 5951 6153 6269 6291 6406 6187 6245 6363 6121 6230 6307 6402 6494 6613

Table 52 - Governor’s Energy Office Case Water Consumption (1,000,000 of gallons)
Electric Resource Plan Annual Progress Report 

Tri-State Generation and Transmission Association, Inc. 77

Thermal Unit 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032

Craig 1 678 644 719 742 611 685 730 717 703 663 553 623 597 594 563 571 530 614 624 648

Craig 2 507 562 614 511 574 560 603 650 580 519 468 521 486 524 487 479 523 538 547 568

Craig 3 2864 2897 2632 3157 2991 2780 3155 3235 2887 2862 2390 2224 2489 2566 2173 2351 2418 2359 2540 2641

LRS 2 1531 1821 1776 1571 1821 1776 1566 1817 1803 1542 1563 1563 1216 1323 1224 1081 1243 1240 1234 1249

LRS 3 1893 1643 1941 1899 1670 1941 1941 1667 1867 1850 1284 1485 1396 1137 1199 1238 1070 1226 1209 1206

Nucla 748 752 753 755 705 752 752 750 740 737 726 679 717 715 712 710 705 702 734 736

PEGS 1120 957 933 857 806 761 864 869 837 825 762 737 805 697 780 770 703 653 718 703

San Juan 3 240 242 241 242 241 242 241 241 241 242 241 227 241 241 240 241 241 240 241 241

Springerville 2652 3058 3090 2967 3093 3073 2930 3025 2763 2459 2272 2255 2074 2212 2182 2199 2203 2172 2129 2167

Burlington 1 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5

Burlington 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Knutson 1 0 0 0 0 0 0 0 0 1 1 2 2 3 3 3 4 1 0 3 3

Knutson 2 0 0 0 0 0 0 0 0 7 2 4 7 6 6 6 6 1 1 5 5

Limon 1 0 0 0 0 0 0 0 0 0 0 2 1 2 2 2 2 0 0 2 2

Limon 2 0 1 3 0 0 0 0 0 0 0 1 0 1 2 1 2 0 0 1 1

Pyramid 1 14 12 0 14 0 6 5 7 0 22 0 3 6 8 2 8 2 7 6 7

Pyramid 2 12 12 0 9 0 6 1 7 0 11 0 3 1 9 1 8 2 9 9 13

Pyramid 3 4 4 4 4 4 4 4 4 4 4 4 6 4 4 4 4 4 4 4 4

Pyramid 4 0 14 0 16 0 8 6 9 1 26 1 7 10 20 12 21 12 29 30 34

Rifle 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 0 0 1 1

Shafer 54 61 90 39 24 37 27 23 28 21 25 57 31 32 45 42 31 39 54 61

Brush 2 3 5 7 3 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0

2x1 C-C 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 105 141 166 193

Total 12325 12691 12808 12792 12546 12636 12830 13025 12466 11790 10303 10406 10091 10099 9640 9744 9798 9980 10261 10487

Table 53 - Western Resource Advocates (WRA) Case CO2 Output (1,000 of tons) 
Electric Resource Plan Annual Progress Report 

Tri-State Generation and Transmission Association, Inc. 78

Thermal Unit 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032

Craig 1 161 153 171 176 145 163 174 170 167 158 131 148 142 141 134 136 126 146 148 154

Craig 2 148 164 179 149 168 164 176 190 170 152 137 152 142 153 142 140 153 157 160 166

Craig 3 1571 1589 1444 1732 1641 1525 1731 1775 1584 1570 1311 1220 1365 1408 1192 1290 1326 1294 1393 1449

LRS 2 1103 1312 1279 1132 1312 1279 1128 1309 1299 1111 1126 1126 876 953 882 779 895 893 889 900

LRS 3 1601 1390 1642 1606 1413 1642 1642 1410 1579 1565 1086 1257 1181 962 1014 1047 905 1037 1022 1020

Nucla 1086 1092 1092 1096 1024 1092 1092 1089 1074 1069 1053 986 1041 1037 1033 1031 1024 1019 1066 1068

PEGS 693 592 577 530 498 470 534 538 518 510 471 456 498 431 482 476 435 404 444 435

San Juan 3 275 277 276 277 276 277 276 277 276 278 276 260 276 276 275 276 276 275 276 276

Springerville 1243 1433 1448 1390 1449 1440 1373 1417 1295 1152 1064 1057 972 1036 1022 1031 1032 1018 997 1015

Burlington 1 5 4 5 4 5 4 5 4 5 4 4 5 5 5 5 5 5 5 5 5

Burlington 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Knutson 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Knutson 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Limon 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Limon 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Pyramid 1 1 1 0 1 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0

Pyramid 2 1 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1

Pyramid 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Pyramid 4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1

Rifle 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Shafer 9 10 15 7 4 6 5 4 5 4 4 10 5 6 8 7 5 7 9 10

Brush 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

2x1 C-C 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Total 7896 8019 8130 8102 7935 8064 8135 8183 7970 7574 6666 6676 6504 6409 6190 6218 6183 6256 6412 6500

Table 54 - Western Resource Advocates (WRA) Case SO2 Output (tons) 
Electric Resource Plan Annual Progress Report 

Tri-State Generation and Transmission Association, Inc. 79

Thermal Unit 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032

Craig 1 0.9 0.9 1.0 1.0 0.8 0.9 1.0 1.0 1.0 0.9 0.8 0.8 0.8 0.8 0.8 0.8 0.7 0.8 0.8 0.9

Craig 2 0.7 0.7 0.8 0.7 0.8 0.7 0.8 0.9 0.8 0.7 0.6 0.7 0.6 0.7 0.6 0.6 0.7 0.7 0.7 0.8

Craig 3 5.3 5.4 4.9 5.9 5.6 5.2 5.9 6.0 5.4 5.3 4.5 4.1 4.6 4.8 4.1 4.4 4.5 4.4 4.7 4.9

LRS 2 2.0 2.4 2.3 2.0 2.4 2.3 2.0 2.4 2.3 2.0 2.0 2.0 1.6 1.7 1.6 1.4 1.6 1.6 1.6 1.6

LRS 3 2.5 2.2 2.5 2.5 2.2 2.5 2.5 2.2 2.4 2.4 1.7 1.9 1.8 1.5 1.6 1.6 1.4 1.6 1.6 1.6

Nucla 1.5 1.5 1.5 1.5 1.4 1.5 1.5 1.5 1.5 1.5 1.4 1.3 1.4 1.4 1.4 1.4 1.4 1.4 1.5 1.5

PEGS 2.0 1.7 1.6 1.5 1.4 1.3 1.5 1.5 1.5 1.4 1.3 1.3 1.4 1.2 1.4 1.4 1.2 1.1 1.3 1.2

San Juan 3 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4

Springerville 1.0 1.1 1.2 1.1 1.2 1.1 1.1 1.1 1.0 0.9 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8

Burlington 1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Burlington 2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Knutson 1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Knutson 2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Limon 1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Limon 2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Pyramid 1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Pyramid 2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Pyramid 3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Pyramid 4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Rifle 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Shafer 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Brush 2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

2x1 C-C 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Total 16.4 16.4 16.4 16.7 16.2 16.2 16.9 17.1 16.4 15.7 13.7 13.6 13.6 13.5 12.7 12.9 12.9 13.1 13.6 13.8

Table 55 - Western Resource Advocates (WRA) Case NOx Output (1000 of tons) 
Electric Resource Plan Annual Progress Report 

Tri-State Generation and Transmission Association, Inc. 80

Thermal Unit 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032

Craig 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

Craig 2 0 0 1 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0

Craig 3 21 21 19 23 22 20 23 24 21 21 17 16 18 19 16 17 18 17 18 19

LRS 2 70 83 81 72 83 81 72 83 82 70 71 71 56 60 56 49 57 57 56 57

LRS 3 82 71 84 82 72 84 84 72 80 80 55 64 60 49 52 53 46 53 52 52

Nucla 38 39 39 39 36 39 39 39 38 38 37 35 37 37 37 37 36 36 38 38

PEGS 10 9 9 8 7 7 8 8 8 8 7 7 7 6 7 7 6 6 7 6

San Juan 3 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

Springerville 75 87 88 84 88 87 83 86 79 70 65 64 59 63 62 63 63 62 61 62

Burlington 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Burlington 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Knutson 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Knutson 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Limon 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Limon 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Pyramid 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Pyramid 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Pyramid 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Pyramid 4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Rifle 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Shafer 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Brush 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

2x1 C-C 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Total 299 312 322 310 311 321 311 314 311 289 255 260 240 237 232 228 228 233 234 237

Table 56 - Western Resource Advocates (WRA) Case Hg Output (lbs) 
Electric Resource Plan Annual Progress Report 

Tri-State Generation and Transmission Association, Inc. 81

Thermal Unit 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032

Craig 1 18 17 19 19 16 18 19 19 18 17 14 16 15 15 15 15 14 16 16 17

Craig 2 10 11 12 10 11 11 12 13 11 10 9 10 10 10 10 9 10 11 11 11

Craig 3 51 51 47 56 53 49 56 57 51 51 42 39 44 46 39 42 43 42 45 47

LRS 2 74 88 85 76 88 85 75 87 87 74 75 75 58 64 59 52 60 60 59 60

LRS 3 86 74 88 86 76 88 88 76 85 84 58 67 63 52 54 56 48 56 55 55

Nucla 46 46 47 47 44 46 47 46 46 46 45 42 44 44 44 44 44 43 45 45

PEGS 13 11 11 10 9 9 10 10 10 10 9 9 9 8 9 9 8 8 8 8

San Juan 3 10 10 10 10 10 10 10 10 10 10 10 9 10 10 10 10 10 10 10 10

Springerville 98 113 114 109 114 113 108 112 102 91 84 83 76 82 80 81 81 80 78 80

Burlington 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Burlington 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Knutson 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Knutson 2 0 0 0 0 0 0 0 0 1 0 0 1 1 0 0 0 0 0 0 0

Limon 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Limon 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Pyramid 1 1 0 0 1 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0

Pyramid 2 1 1 0 1 0 0 0 0 0 1 0 0 0 1 0 1 0 1 1 1

Pyramid 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Pyramid 4 0 1 0 1 0 0 0 0 0 1 0 0 1 1 1 1 1 1 2 2

Rifle 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Shafer 3 3 4 2 1 2 1 1 1 1 1 3 1 2 2 2 1 2 3 3

Brush 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

2x1 C-C 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Total 409 427 437 427 422 433 427 432 422 397 349 356 335 335 324 324 321 329 335 340

Table 57 - Western Resource Advocates (WRA) Case PM Output (tons) 
Electric Resource Plan Annual Progress Report 

Tri-State Generation and Transmission Association, Inc. 82

Thermal Unit 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032

Craig 1 318 303 338 348 287 322 343 337 330 311 260 293 280 279 264 268 249 288 293 304

Craig 2 234 259 283 236 265 258 278 300 268 239 216 240 224 241 225 221 241 248 252 262

Craig 3 1478 1495 1358 1629 1544 1435 1628 1669 1490 1477 1233 1148 1284 1324 1121 1213 1248 1218 1311 1363

LRS 2 729 867 846 748 867 846 746 865 859 734 744 744 579 630 583 515 592 590 588 595

LRS 3 850 738 872 852 750 872 872 748 838 831 577 667 627 511 538 556 480 550 543 541

Nucla 464 466 467 468 437 466 467 465 459 457 450 421 445 443 442 441 437 435 455 456

PEGS 767 655 639 587 552 521 591 595 573 565 522 505 551 477 534 528 482 447 492 482

San Juan 3 122 123 122 123 122 123 122 123 122 123 122 115 122 122 122 122 122 122 122 122

Springerville 1429 1649 1665 1599 1667 1657 1579 1630 1489 1326 1224 1215 1118 1192 1176 1186 1187 1171 1147 1168

Burlington 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

Burlington 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Knutson 1 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 0 0 1 1

Knutson 2 0 0 0 0 0 0 0 0 2 1 1 2 2 2 2 2 0 0 1 1

Limon 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Limon 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Pyramid 1 9 7 0 8 0 4 3 4 0 13 0 2 4 5 1 5 1 4 4 4

Pyramid 2 8 8 0 6 0 4 1 5 0 7 0 2 1 6 1 6 1 6 6 9

Pyramid 3 2 2 2 2 2 2 2 2 2 2 2 3 2 2 2 2 2 2 2 2

Pyramid 4 0 8 0 9 0 4 3 5 1 14 0 4 5 11 6 11 7 16 16 18

Rifle 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 0 0 1 1

Shafer 55 61 91 40 24 38 27 23 28 21 26 58 31 33 45 43 32 40 54 62

Brush 2 3 5 6 3 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0

2x1 C-C 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 140 189 223 260

Total 6469 6648 6692 6661 6519 6552 6664 6773 6462 6122 5381 5422 5279 5281 5065 5121 5223 5329 5514 5653

Table 58 - Western Resource Advocates (WRA) Case Water Consumption (1,000,000 of gallons) 
Electric Resource Plan Annual Progress Report 

Tri-State Generation and Transmission Association, Inc. 83

Appendix D - Energy Efficiency and Demand Side Program Progress 

Current Resource Activities kW Savings kWh Savings 

1. Agr./Irr. Appliance Rebate programs 0 0 

2. Agr./Irr. Audit and Bldg Env. measures 0 0 

3. Agr./Irr. Cooling/Ventilation measures 0 0 

4. Agr./Irr. Heating/Drying measures 335 334500 

5. Agr./Irr. Load Mgmt programs 0 0 

6. Agr./Irr. Pump/motor/ASD measures 8388 12294103 

7. Agr./Irr. Refrigerator/Freezer measures 0 0 

8. Com./Ind. Air Conditioning measures 245 184567 

9. Com./Ind. Appliance rebate programs 0 0 

10. Com./Ind. Audit and Bldg Envelope measures 0 0 

11. Com./Ind. Cooking measures 0 0 

12. Com./Ind. Heating measures 3886 4596467 

13. Com./Ind. Hot Water measures 0 0 

14. Com./Ind. Motor/ASD programs 2265 5503918 

15. Com./Ind. Refrigerator/Freezer measures 1190 2400362 

16. Com./Ind. ventilation measures 0 0 

17. Com./Ind./Agr./Irr. Lighting measures 2189 7900180 

18. Com./Ind/Agr./Irr. Load Mgmt programs 0 0 

19. Ind. Process measures 0 0 

20. Res. Air Conditioning measures 4093 385163 

21. Res. Appliance rebate programs 232 562944 

22. Res. Audit and building envelope measures 127 624738 

23. Res. Cooking Measures 0 0 

24. Res. Domestic Hot Water measures 13783 2910251 

25. Res. Heating measures 52361 63492464 

26. Res. Lighting measures 22653 4771166 

27. Res. Load Management programs 5287 0 

28. Res. Refrigerator/Freezer measures 2145 2470220 

29. Res. Ventilation measures 0 0 

Other 0 0 

Total: 119179 108431043