Table 6.  Change in Projected Average Efficiencies of Newly Purchased Residential 
Equipment Relative to the Reference Case, 2004 and 2010
(Percent)

Technology

1990+24%

1990+9%

1990-7%

2005 Start

Early Start

2005 Start

Early Start

2005 Start

Early Start

 

2004

Air-Source Heat Pump

0.0

1.4

0.0

3.9

0.0

6.8

Electric Water Heater

0.0

0.9

0.0

1.8

0.0

8.8

Natural Gas Water Heater

0.0

3.6

0.0

5.6

0.0

7.6

Building Shell

0.0

0.6

0.0

2.2

0.0

4.2

 

2010

Air-Source Heat Pump

1.3

0.8

3.6

3.5

6.1

5.5

Electric Water Heater

0.3

0.1

2.4

1.9

18.8

12.9

Natural Gas Water Heater

1.1

0.9

3.7

3.6

5.1

5.0

Building Shell

1.5

1.4

4.9

4.8

9.5

9.5

Source: Office of Integrated Analysis and Forecasting, National Energy Modeling System runs KYBASE.D080398A, FD24ABV.D080398B, EARLY24.D052099A, FD09ABV.D080398B, EARLY09.D053199A, FD07BLW.D080398B, and EARLY07.D052199A.

 

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