a For more information on NEMS, please refer to the U.S. Department of Energy, Energy Information Administration documentation.

A useful summary is National Energy Modeling System: An Overview 2000, DOE/EIA-0581(2000), March 2000. DOE/EIA approves

use of the name NEMS to describe only an official version of the model without any modification to code or data. Because our

analysis entails some minor code modifications and the model is run under policy scenarios that are variations on DOE/EIA

assumptions, the name NEMS-BRS refers to the model as used here (BRS is DOE’s Building Research and Standards office, under

whose aegis this work has been performed).

11-1

CHAPTER 11: UTILITY IMPACTS ANALYSIS

11.1 SUMMARY

The effects of proposed central air conditioner and heat pump energy-efficiency standards

on the electricity and gas industries were analyzed using a variant of U.S. DOE/EIA’s National

Energy Modeling System (NEMS) called NEMS-BRS, together with some exogenous calculations.a

NEMS was used by DOE/EIA to produce the 2000 Annual Energy Outlook (AEO2000),1 and NEMSBRS is used to provide some key equivalent inputs to our standards analysis. Because electric utility

restructuring is well underway, it is no longer valid to assume the traditional cost recovery regulation

of utilities. Therefore, this utility analysis consists of a comparison between model results for a case

comparable to the AEO2000 Reference Case, as reported in the AEO2000, and policy cases

incorporating each of the central air conditioner and heat pump trial standard levels. Because the

policy standards effects are too small to be seen in the context of the whole electricity sector, NEMSBRS is not used directly. Rather, exploratory runs are conducted to estimate marginal effects, which

are then used to calculate the small effects on utilities due to each proposed trial standard level. The

reduced electricity demand from all five standards reduces generation from both coal and natural gas.

Because natural gas is more frequently the marginal fuel, it is usually affected to a greater degree,

particularly early in the forecast period. Other generation is only minimally affected by any of the

trial standard levels. 

11.2 PURPOSE OF THE ANALYSIS

The purpose of this analysis is to assess the impact of each trial standard level for both central

air conditioners and heat pumps on electric utilities. The requirement that the effects of proposed

standards on electric utilities be analyzed has a long history. Analysis of the effects of proposed

standards on the electric utility industry historically took the form of estimated fuel savings and

capital cost savings relative to the likely reduction in revenues implied by lower electricity sales.

In the short term, ratepayers of traditional utilities gained because of reduced energy use at fixed

prices, but any imbalance between utility revenue and costs disappeared in the long run as cost

recovery regulation ensured that utilities would recover their costs. In a restructured industry,

however, only transmission an d distribution providers will be permitted to recoup costs, and energy

prices are not rigid in the short run, so the basis of our analysis must change. Using the AEO2000

assumptions regarding the spread of restructuring allows us to use NEMS-BRS to estimate the

EE-RM-STD-98-440 COMMENT 241ZZ
b The DOE/EIA assumptions regarding restructuring are explained on page 11 and pages 20-23 of the AEO2000.

c Please see pages 38 and 49 of the AEO2000 for more details on growth assumptions.

11-2

overall effect of standards on the industry.b

 We assess the impact of standards on utilities by

reporting several key industry parameters, notably energy sales, generation, and capacity.

11.3 ASSUMPTIONS

NEMS-BRS has several advantages that have led to its adoption as the source for basic

forecasting in the appliance energy-efficiency analyses. NEMS-BRS relies on a set of assumptions

which are well known and fairly transparent due to the exposure and scrutiny each AEO receives.

In addition, the comprehensiveness of NEMS-BRS permits the modeling of interactions among the

various energy supply and demand sectors and the economy as a whole, so it produces a

sophisticated picture of the effects of appliance standards. Perhaps most importantly, because it

explicitly simulates the impact on the industry, NEMS-BRS provides an accurate estimation of

marginal effects, which yield better indicators of actual effects than estimates based on industry-wide

average values. We chose marginal rates over average rates because we wanted to show the effects

of proposed standards as well as what might also be happening in the market according to the

AEO2000 Reference Case.

The utility analysis uses the assumptions of AEO2000 and treats central air conditioner and

heat pump efficiency standards as variations in policy. Because the implementation of standards

reduces demand by less than 1.5% of total U.S. electricity generation in any given year, its effect

cannot be detected directly by simulations. Therefore, simulation runs are done for larger reductions

in demand, and results are interpolated between AEO2000 and these runs. We assume that the

effects measured are linear within the range of interpolation. This issue is discussed further below

and in Appendix H.

Variations in some of these assumptions have also been explored through two scenarios that

represent alternative futures based on the Low and High Economic Growth cases of AEO2000,

demonstrating the effects of alternative growth assumptions on energy markets. The growth

assumptions for each case are based on macroeconomic forecasts prepared by DRI/McGraw-Hill.

The AEO2000 Reference Case assumes a moderate rate of economic growth, 2.2% a year from 1998

through 2020. The Low Economic Growth case is based on lower growth rates for population, labor

force, and productivity, resulting in higher prices and interest rates and lower growth in industrial

output. Economic output in the Low Growth case increases by 1.7% a year from 1998 through 2020.

The High Economic Growth case incorporates higher growth rates for population, labor force, and

labor productivity, resulting in lower inflation and interest rates and an increased projected economic

output of 2.6% a year. The energy savings that we used to model the Low and High Economic

Growth cases varied by a minor amount from that which we used to model the standard levels in the

Reference Case.c

EE-RM-STD-98-440 COMMENT 241ZZ
11-3

11.4 METHODS

NEMS is a large, multi-sectoral, partial equilibrium model of the U.S. energy sector that has

been developed over several years by DOE/EIA, primarily for the purpose of preparing the Annual

Energy Outlook. NEMS produces a widely recognized baseline forecast for the U.S. through 2020

and is in the public domain. The NEMS-BRS model used for appliance standards analysis is based

on the AEO2000 version of NEMS with minor modifications.

The current time horizon of NEMS-BRS is 2020, yet other parts of the central air conditioner

and heat pump energy-efficiency standards analysis extend to the year 2030. It is not feasible to

extend the forecast period of NEMS-BRS for the purposes of this analysis nor does DOE/EIA have

an approved method for extrapolation of many outputs beyond 2020. While it might seem

reasonable in general to make simple linear extrapolations of results, in practice this is not advisable

because outputs could be contradictory. For example, changes in the fuel mix implied by

extrapolations of those outputs could be inconsistent with the extrapolation of marginal emissions

factors. An analysis of various trends sufficiently detailed to guarantee consistency is beyond the

scope of this work, and, in any case, would involve a great deal of uncertainty. Therefore, all

extrapolations beyond 2020 are simple replications of year 2020 results (except for fuel prices; see

below). While these may seem unreasonable in some instances, in this way results are guaranteed

to be consistent. As with the AEO Reference Case in general, the implicit assumption is that the

regulatory environment does not deviate from the current known situation during the extrapolation

period. Only changes that have been announced with date-certain introduction are included in

NEMS-BRS. To emphasize the extrapolated results wherever they appear, they are shaded in grey

to distinguish them from actual NEMS-BRS results.

Fuel price inputs to the analysis of standards are also consistent with NEMS-BRS. We

extrapolate to 2030 using the DOE/EIA approach for forecasting fuel prices for the U.S. Federal

Energy Management Program (FEMP). To determine the regional price forecasts for petroleum

products for the years 2020-2030, EIA uses the projected average annual growth rate for the world

oil price in combination with the refinery and distribution markups from 2020 onward. Similarly,

natural gas prices are derived from the average annual growth rate over the years 1998 to 2020 in

combination with regional price margins from the year 2020. Electricity prices are kept constant

at 2020 levels because it is assumed that the transition to a restructured utility industry will be

completed.

The various trial standard level simulation runs are executed by reducing electricity

consumption in the NEMS-BRS Residential Demand Module of the NES forecast savings for space

heating. For space cooling, the air-conditioning efficiency in NEMS was adjusted to induce a higher

cooling energy use decrement. These efficiency adjustments and energy reductions are applied to

the central air conditioner and heat pump end uses, respectively, and are divided among U.S. census

divisions based on the prevalence of central air conditioning and heat pumping as determined by

DOE/EIA’s Residential Energy Consumption Survey (RECS).2

EE-RM-STD-98-440 COMMENT 241ZZ
11-4

As mentioned above, the magnitude of energy decrements that would be required for NEMSBRS to produce stable results safely out of the range of numerical noise is larger than even the most

rigorous efficiency standard under consideration. Therefore, we estimate results in the range of

effects of the standard levels using interpolation. Reductions to the residential central air conditioner

and heat pump load are implemented at levels well beyond the range of effects of the proposed

standards. Actual changes in generation and capacity due to the standard are then derived from these

outputs. A detailed description of the interpolation methodology is given in Appendix H.

11.5 RESULTS

Table 11.1 shows the results from a NEMS-BRS run comparable to the published AEO2000

Reference Case, with results for the five trial standard levels presented in Tables 11.2 through 11.6.

Tables 11.7 and 11.8 represent alternative Roll-up and Shift efficiency scenarios to trial standard

level 3 (NAECA efficiency scenario), respectively. For more information on these efficiency

scenarios, please refer to Chapter 7. Each table shows forecasts using interpolated results as

described in Section 11.4 for residential energy sales and total U.S. electric generation and installed

capacity. Results are discussed in the following two sections. Within these sections, individual

standards are grouped according to the NES-forecast electricity savings patterns. Generally, most

standards result in similar effects on electric and gas utilities, although the magnitude of the effects

varies according to the level of forecast energy savings. When electricity savings dominate, gas-fired

generation is somewhat more affected than coal-fired generation, especially early in the forecast.

This effect reflects the more load-following role of gas generation overall.

11.5.1 Central Air Conditioner and Heat Pump Standard Level Results

For each of the five standard levels, residential energy sales fall compared to the AEO2000

Reference Case. The decrease in sales is proportional to the amount of energy that the NES model

predicts will be saved by each standard level, ranging from just over 0.9% (Standard Level 1) to

4.5% (Standard Level 5) of total residential electricity sales in the peak savings year reported. For

each standard level, total U.S. electric generation decreases relative to the AEO2000 baseline, by just

under 1.4% in the peak year of the maximum savings case (Standard Level 5) to 0.3% in Standard

Level 1. Total installed capacity is also reduced in each standard level scenario, by a maximum of

just under 2.9% (Standard Level 5) in 2020. About 87% of the capacity reduction is in natural gas

fired capacity, in this case, reflecting the peaking nature of air conditioning use.

11.5.2 Economic Growth Cases

The results under the Low and High Economic Growth cases are presented for trial standard

level 3 in Tables 11.9 and 11.10, respectively. For the Low Economic Growth trial standard level

case, the savings have a slightly lower impact than in their corresponding Reference Cases, while

EE-RM-STD-98-440 COMMENT 241ZZ
11-5

NEMS-BRS Results: AEO2000 Reference

2000 2005 2010 2015 2020

Residential Sector Energy Consumption 1

Electricity Sales (TWh)

2 1,185 1,281 1,379 1,464 1,553

Natural Gas (EJ) 5.32 5.51 5.76 5.96 6.18

Other (EJ) 1.97 1.91 1.84 1.78 1.74

Natural Gas (Quads) 5.04 5.22 5.46 5.65 5.86

Other (Quads)

3 1.87 1.81 1.74 1.69 1.65

Total U.S. Electric Generation 4

Coal (TWh) 1,930 2,127 2,172 2,251 2,347

Gas (TWh) 601 717 1,001 1,297 1,476

Petroleum (TWh) 90 68 54 47 44

Nuclear (TWh) 688 674 627 511 427

Renewables (TWh) 389 411 429 437 447

Total (TWh)

5 3,698 3,997 4,283 4,543 4,741

Installed Generating Capacity 6

Coal (GW) 315.3 310.6 310.7 315.8 326.0

Other Fossil (GW)

7 274.8 334.0 404.7 461.8 507.6

Nuclear (GW) 97.5 93.4 84.1 67.4 57.0

Renewables (GW) 94.7 98.5 101.7 103.8 105.7

Total (GW)

8 782.3 836.5 901.2 948.8 996.3

1

Comparable to Table A2 of AEO2000: Energy Consumption, Residential 2

Comparable to Table A8 of AEO2000: Electricity Sales by Sector 3

Includes distillate fuel, residential fuel, kerosene, LPG, motor gasoline, coal,

 and renewable energy

4

Comparable to Table A8 of AEO2000: Electric Generators and Cogenerators 5

Excludes "Other Gaseous Fuels" cogenerators and "Other" cogenerators 6

Comparable to Table A9 of AEO2000: Electric Generators and Cogenerators Capability 7

Includes "Other Gaseous Fuels" cogenerators 8

Excludes Pumped Storage and Fuel Cells

Table 11.1 AEO2000 Reference Forecast

the High Growth standard level case results in a slightly higher impact for each of the reported

industry parameters (i.e., energy consumption, generation, and capacity). 

EE-RM-STD-98-440 COMMENT 241ZZ
11-6

: Difference from AEO2000 Reference

Extrapolation

2000 2005 2010 2015 2020 2000 2005 2010 2015 2020 2025 2030

nsumption Residential Sector Energy Consumption

1,185 1,281 1,375 1,454 1,539 Electricity Sales (TWh) 0.0 0.0 -4.3 -9.8 -14.4 -17.5 -19.5

Total U.S. Electric Generation

1,930 2,127 2,171 2,248 2,341 Coal (TWh) 0.0 0.0 -1.0 -2.5 -6.2 -6.2 -6.2

601 717 998 1,289 1,467 Gas (TWh) 0.0 0.0 -3.0 -8.2 -8.8 -8.8 -8.8

90 68 53 47 45 Petroleum (TWh) 0.0 0.0 -0.5 0.2 0.8 0.8 0.8

688 674 627 511 427 Nuclear (TWh) 0.0 0.0 0.0 0.0 0.0 0.0 0.0

389 411 429 437 447 Renewables (TWh) 0.0 0.0 -0.1 0.2 0.0 0.0 0.0

3,698 3,997 4,278 4,533 4,727 Total (TWh) 0.0 0.0 -4.5 -10.3 -14.2 -14.2 -14.2

Installed Generating Capacity

315.3 310.6 310.7 315.6 325.2 Coal (GW) 0.0 0.0 0.0 -0.2 -0.8 -0.8 -0.8

274.8 334.0 404.2 458.0 502.0 Other Fossil (GW) 0.0 0.0 -0.5 -3.8 -5.6 -5.6 -5.6

97.5 93.4 84.1 67.4 57.0 Nuclear (GW) 0.0 0.0 0.0 0.0 0.0 0.0 0.0

94.7 98.5 101.7 103.8 105.7 Renewables (GW) 0.0 0.0 0.0 0.0 0.0 0.0 0.0

782.3 836.5 900.6 944.8 989.9 Total (GW) 0.0 0.0 -0.6 -4.0 -6.4 -6.4 -6.4

 Level 1 Forecast

EE-RM-STD-98-440 COMMENT 241ZZ
11-7

: Difference from AEO2000 Reference

Extrapolation

2000 2005 2010 2015 2020 2000 2005 2010 2015 2020 2025 2030

nsumption Residential Sector Energy Consumption

1,185 1,281 1,371 1,447 1,528 Electricity Sales (TWh) 0.0 0.0 -7.6 -17.2 -25.4 -31.0 -34.6

Total U.S. Electric Generation

1,930 2,127 2,169 2,246 2,337 Coal (TWh) 0.0 0.0 -2.8 -4.5 -10.4 -10.4 -10.4

601 717 997 1,283 1,461 Gas (TWh) 0.0 0.1 -3.8 -13.7 -15.4 -15.4 -15.4

90 68 53 47 45 Petroleum (TWh) 0.1 0.0 -1.2 0.2 1.3 1.3 1.3

688 674 627 511 427 Nuclear (TWh) 0.0 0.0 0.0 0.0 0.0 0.0 0.0

389 411 429 437 447 Renewables (TWh) 0.0 0.0 -0.1 0.1 -0.1 -0.1 -0.1

3,698 3,997 4,275 4,525 4,716 Total (TWh) 0.1 0.1 -7.8 -17.9 -24.6 -24.6 -24.6

Installed Generating Capacity

315.3 310.6 310.7 315.4 324.7 Coal (GW) 0.0 0.0 0.0 -0.4 -1.3 -1.3 -1.3

274.8 334.0 403.9 455.5 498.4 Other Fossil (GW) 0.0 0.0 -0.8 -6.3 -9.2 -9.2 -9.2

97.5 93.4 84.1 67.4 57.0 Nuclear (GW) 0.0 0.0 0.0 0.0 0.0 0.0 0.0

94.7 98.5 101.7 103.8 105.7 Renewables (GW) 0.0 0.0 0.0 0.0 0.0 0.0 0.0

782.3 836.5 900.4 942.1 985.7 Total (GW) 0.0 0.0 -0.8 -6.7 -10.6 -10.6 -10.6

 Level 2 Forecast

EE-RM-STD-98-440 COMMENT 241ZZ
11-8

: Difference from AEO2000 Reference

Extrapolation

2000 2005 2010 2015 2020 2000 2005 2010 2015 2020 2025 2030

nsumption Residential Sector Energy Consumption

1,185 1,281 1,370 1,444 1,524 Electricity Sales (TWh) 0.0 0.0 -8.7 -19.9 -29.5 -35.9 -40.2

Total U.S. Electric Generation

1,930 2,127 2,169 2,246 2,335 Coal (TWh) 0.0 0.0 -3.2 -5.2 -12.1 -12.1 -12.1

601 717 997 1,281 1,458 Gas (TWh) 0.0 0.1 -4.4 -15.9 -17.8 -17.8 -17.8

90 68 53 47 45 Petroleum (TWh) 0.1 0.0 -1.4 0.2 1.5 1.5 1.5

688 674 627 511 427 Nuclear (TWh) 0.0 0.0 0.0 0.0 0.0 0.0 0.0

389 411 429 437 447 Renewables (TWh) 0.0 0.0 -0.1 0.1 -0.1 -0.1 -0.1

3,698 3,997 4,274 4,522 4,712 Total (TWh) 0.1 0.1 -9.1 -20.7 -28.6 -28.6 -28.6

Installed Generating Capacity

315.3 310.6 310.7 315.3 324.4 Coal (GW) 0.0 0.0 0.0 -0.5 -1.6 -1.6 -1.6

274.8 334.0 403.8 454.5 496.9 Other Fossil (GW) 0.0 0.0 -0.9 -7.3 -10.7 -10.7 -10.7

97.5 93.4 84.1 67.4 57.0 Nuclear (GW) 0.0 0.0 0.0 0.0 0.0 0.0 0.0

94.7 98.5 101.7 103.8 105.7 Renewables (GW) 0.0 0.0 0.0 0.0 0.0 0.0 0.0

782.3 836.5 900.2 941.0 984.0 Total (GW) 0.0 0.0 -1.0 -7.8 -12.3 -12.3 -12.3

 Level 3 Forecast

EE-RM-STD-98-440 COMMENT 241ZZ
11-9

: Difference from AEO2000 Reference

Extrapolation

2000 2005 2010 2015 2020 2000 2005 2010 2015 2020 2025 2030

nsumption Residential Sector Energy Consumption

1,185 1,281 1,368 1,440 1,517 Electricity Sales (TWh) 0.0 0.0 -10.7 -24.5 -36.5 -44.6 -49.9

Total U.S. Electric Generation

1,930 2,127 2,170 2,245 2,332 Coal (TWh) 0.0 0.0 -1.7 -6.0 -15.3 -15.3 -15.3

601 717 993 1,277 1,454 Gas (TWh) 0.0 0.0 -7.8 -19.6 -21.9 -21.9 -21.9

90 68 53 47 46 Petroleum (TWh) 0.0 0.0 -1.1 0.3 2.0 2.0 2.0

688 674 627 511 427 Nuclear (TWh) 0.0 0.0 0.0 0.0 0.0 0.0 0.0

389 411 429 437 447 Renewables (TWh) 0.0 0.0 0.0 0.4 0.0 0.0 0.0

3,698 3,997 4,272 4,518 4,706 Total (TWh) 0.0 0.0 -10.7 -24.9 -35.1 -35.1 -35.1

Installed Generating Capacity

315.3 310.6 310.7 315.3 324.0 Coal (GW) 0.0 0.0 0.0 -0.5 -2.0 -2.0 -2.0

274.8 334.0 403.4 452.9 494.2 Other Fossil (GW) 0.0 0.0 -1.3 -8.9 -13.4 -13.4 -13.4

97.5 93.4 84.1 67.4 57.0 Nuclear (GW) 0.0 0.0 0.0 0.0 0.0 0.0 0.0

94.7 98.5 101.7 103.8 105.7 Renewables (GW) 0.0 0.0 0.0 0.0 0.0 0.0 0.0

782.3 836.5 899.9 939.4 980.9 Total (GW) 0.0 0.0 -1.3 -9.4 -15.4 -15.4 -15.4

 Level 4 Forecast

EE-RM-STD-98-440 COMMENT 241ZZ
11-10

: Difference from AEO2000 Reference

Extrapolation

2000 2005 2010 2015 2020 2000 2005 2010 2015 2020 2025 2030

nsumption Residential Sector Energy Consumption

1,185 1,281 1,360 1,419 1,483 Electricity Sales (TWh) 0.0 0.0 -19.2 -45.5 -70.0 -87.7 -99.2

Total U.S. Electric Generation

1,930 2,127 2,167 2,240 2,319 Coal (TWh) 0.0 0.0 -4.8 -11.4 -28.2 -28.2 -28.2

601 717 988 1,261 1,435 Gas (TWh) 0.0 0.0 -13.1 -36.5 -40.7 -40.7 -40.7

90 68 52 47 47 Petroleum (TWh) 0.0 0.0 -2.2 0.2 3.2 3.2 3.2

688 674 627 511 427 Nuclear (TWh) 0.0 0.0 0.0 0.0 0.0 0.0 0.0

389 411 429 438 447 Renewables (TWh) 0.0 0.0 0.0 1.1 0.0 0.0 0.0

3,698 3,997 4,263 4,496 4,675 Total (TWh) 0.0 0.0 -20.0 -46.7 -65.7 -65.7 -65.7

Installed Generating Capacity

315.3 310.6 310.6 314.8 322.4 Coal (GW) 0.0 0.0 -0.1 -1.0 -3.6 -3.6 -3.6

274.8 334.0 402.3 445.4 482.7 Other Fossil (GW) 0.0 0.0 -2.4 -16.4 -24.9 -24.9 -24.9

97.5 93.4 84.1 67.4 57.0 Nuclear (GW) 0.0 0.0 0.0 0.0 0.0 0.0 0.0

94.7 98.5 101.7 103.8 105.6 Renewables (GW) 0.0 0.0 0.0 0.0 -0.1 -0.1 -0.1

782.3 836.5 898.8 931.4 967.7 Total (GW) 0.0 0.0 -2.4 -17.4 -28.6 -28.6 -28.6

 Level 5 Forecast

EE-RM-STD-98-440 COMMENT 241ZZ
11-11

: Difference from AEO2000 Reference

Extrapolation

2000 2005 2010 2015 2020 2000 2005 2010 2015 2020 2025 2030

nsumption Residential Sector Energy Consumption

1,185 1,281 1,371 1,445 1,525 Electricity Sales (TWh) 0.0 0.0 -8.4 -19.1 -28.3 -34.5 -38.5

Total U.S. Electric Generation

1,930 2,127 2,170 2,246 2,335 Coal (TWh) 0.0 0.0 -2.5 -4.8 -11.6 -11.6 -11.6

601 717 996 1,281 1,458 Gas (TWh) 0.0 0.0 -5.4 -15.6 -17.7 -17.7 -17.7

90 68 53 47 46 Petroleum (TWh) 0.0 0.0 -1.0 0.1 1.5 1.5 1.5

688 674 627 511 427 Nuclear (TWh) 0.0 0.0 0.0 0.0 0.0 0.0 0.0

389 411 429 437 447 Renewables (TWh) 0.0 0.0 -0.1 0.3 -0.1 -0.1 -0.1

3,698 3,997 4,274 4,523 4,713 Total (TWh) 0.0 0.0 -9.0 -19.9 -27.9 -27.9 -27.9

Installed Generating Capacity

315.3 310.6 310.7 315.4 324.5 Coal (GW) 0.0 0.0 0.0 -0.4 -1.5 -1.5 -1.5

274.8 334.0 403.7 454.8 497.2 Other Fossil (GW) 0.0 0.0 -1.0 -7.0 -10.4 -10.4 -10.4

97.5 93.4 84.1 67.4 57.0 Nuclear (GW) 0.0 0.0 0.0 0.0 0.0 0.0 0.0

94.7 98.5 101.7 103.8 105.7 Renewables (GW) 0.0 0.0 0.0 0.0 0.0 0.0 0.0

782.3 836.5 900.2 941.4 984.4 Total (GW) 0.0 0.0 -1.0 -7.4 -11.9 -11.9 -11.9

 Level 3 Roll-Up Forecast

EE-RM-STD-98-440 COMMENT 241ZZ
11-12

: Difference from AEO2000 Reference

Extrapolation

2000 2005 2010 2015 2020 2000 2005 2010 2015 2020 2025 2030

nsumption Residential Sector Energy Consumption

1,185 1,281 1,369 1,442 1,520 Electricity Sales (TWh) 0.0 0.0 -9.6 -22.1 -32.9 -40.2 -45.0

Total U.S. Electric Generation

1,930 2,127 2,172 2,245 2,334 Coal (TWh) 0.0 0.0 0.3 -5.8 -13.2 -13.2 -13.2

601 717 992 1,280 1,456 Gas (TWh) 0.0 0.0 -8.8 -17.4 -20.3 -20.3 -20.3

90 68 53 47 46 Petroleum (TWh) 0.0 0.0 -0.7 0.1 1.6 1.6 1.6

688 674 627 511 427 Nuclear (TWh) 0.0 0.0 0.0 0.0 0.0 0.0 0.0

389 411 429 437 447 Renewables (TWh) 0.0 0.0 -0.2 0.3 0.0 0.0 0.0

3,698 3,997 4,274 4,520 4,709 Total (TWh) 0.0 0.0 -9.5 -22.9 -31.9 -31.9 -31.9

Installed Generating Capacity

315.3 310.6 310.7 315.3 324.3 Coal (GW) 0.0 0.0 0.0 -0.5 -1.7 -1.7 -1.7

274.8 334.0 403.6 453.9 495.7 Other Fossil (GW) 0.0 0.0 -1.1 -7.9 -11.9 -11.9 -11.9

97.5 93.4 84.1 67.4 57.0 Nuclear (GW) 0.0 0.0 0.0 0.0 0.0 0.0 0.0

94.7 98.5 101.7 103.8 105.7 Renewables (GW) 0.0 0.0 0.0 0.0 0.0 0.0 0.0

782.3 836.5 900.1 940.4 982.7 Total (GW) 0.0 0.0 -1.1 -8.4 -13.6 -13.6 -13.6

 Level 3 Shift Forecast

EE-RM-STD-98-440 COMMENT 241ZZ
11-13

: Difference from AEO2000 Lmac Reference

Extrapolation

2000 2005 2010 2015 2020 2000 2005 2010 2015 2020 2025 2030

nsumption Residential Sector Energy Consumption

1,183 1,275 1,358 1,419 1,476 Electricity Sales (TWh) 0.0 0.0 -8.3 -19.0 -28.6 -35.7 -40.5

Total U.S. Electric Generation

1,923 2,105 2,132 2,170 2,210 Coal (TWh) 0.0 0.0 -2.3 -2.0 -5.9 -5.9 -5.9

591 683 934 1,183 1,316 Gas (TWh) 0.0 0.0 -5.9 -17.0 -21.4 -21.4 -21.4

85 60 42 38 34 Petroleum (TWh) 0.0 0.0 -0.6 0.3 0.4 0.4 0.4

688 674 627 511 428 Nuclear (TWh) 0.0 0.0 0.0 0.0 0.0 0.0 0.0

388 409 425 433 441 Renewables (TWh) 0.0 0.0 0.0 0.1 -0.3 -0.3 -0.3

3,675 3,931 4,160 4,335 4,429 Total (TWh) 0.0 0.0 -8.8 -18.6 -27.2 -27.2 -27.2

Installed Generating Capacity

315.3 309.6 308.0 309.4 310.9 Coal (GW) 0.0 0.0 0.0 -0.1 -0.5 -0.5 -0.5

275.0 325.3 388.0 427.9 461.7 Other Fossil (GW) 0.0 0.0 -1.0 -7.0 -10.9 -10.9 -10.9

97.5 93.4 84.1 67.4 57.0 Nuclear (GW) 0.0 0.0 0.0 0.0 0.0 0.0 0.0

94.7 98.3 101.2 103.0 104.4 Renewables (GW) 0.0 0.0 0.0 0.0 0.0 0.0 0.0

782.5 826.6 881.3 907.7 934.0 Total (GW) 0.0 0.0 -1.0 -7.1 -11.4 -11.4 -11.4

 Level 3 Low Economic Growth Forecast

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: Difference from AEO2000 Hmac Reference

Extrapolation

2000 2005 2010 2015 2020 2000 2005 2010 2015 2020 2025 2030

nsumption Residential Sector Energy Consumption

1,183 1,286 1,382 1,465 1,552 Electricity Sales (TWh) 0.0 0.0 -9.3 -20.9 -30.9 -37.6 -42.1

Total U.S. Electric Generation

1,937 2,159 2,230 2,370 2,607 Coal (TWh) 0.0 0.0 -0.8 -8.9 -22.1 -22.1 -22.1

615 762 1,064 1,360 1,469 Gas (TWh) 0.0 -0.3 -7.6 -13.1 -8.7 -8.7 -8.7

95 83 75 65 69 Petroleum (TWh) 0.0 0.0 -1.1 0.0 1.3 1.3 1.3

688 674 627 510 440 Nuclear (TWh) 0.0 0.0 0.0 0.0 0.0 0.0 0.0

389 414 435 446 459 Renewables (TWh) 0.0 0.0 0.0 0.1 -0.1 -0.1 -0.1

3,724 4,092 4,431 4,751 5,044 Total (TWh) 0.0 -0.3 -9.6 -21.9 -29.6 -29.6 -29.6

Installed Generating Capacity

315.3 311.2 315.4 330.1 359.3 Coal (GW) 0.0 0.0 0.0 -0.8 -2.7 -2.7 -2.7

274.8 340.1 426.7 483.9 519.4 Other Fossil (GW) 0.0 0.0 -1.2 -7.8 -9.8 -9.8 -9.8

97.5 93.4 84.1 67.4 58.7 Nuclear (GW) 0.0 0.0 0.0 0.0 0.0 0.0 0.0

94.9 99.1 102.7 105.1 107.5 Renewables (GW) 0.0 0.0 0.0 0.0 0.0 0.0 0.0

782.5 843.8 928.9 986.5 1,044.9 Total (GW) 0.0 0.0 -1.2 -8.6 -12.5 -12.5 -12.5

d Level 3 High Economic Growth Forecast

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1. U.S. Department of Energy-Energy Information Administration, Annual Energy Outlook

2000, December, 1999. Washington, DC. Report No. DOE/EIA-0383(2000).

2. U.S. Department of Energy-Energy Information Administration, A Look at Residential

Energy Consumption in 1997, 1999. Washington, DC. Report No. DOE/EIA-0632(97).

EIA website: <http://www.eia.doe.gov/pub/pdf/consumption/063297.pdf>

REFERENCES

EE-RM-STD-98-440 COMMENT 241ZZ