Region

Cost Adjustment Factor

Step 1

Step 2

Step 3

Step 4

Step 5

Total

1.0

1.2

1.5

2.0

3.0

ECAR

0.4

0.4

0.4

0.4

2.4

3.9

ERCOT

1.5

1.0

2.3

4.5

0.7

9.9

MAAC

0.9

0.9

0.9

0.9

5.5

9.2

MAPP

7.1

14.2

42.5

42.5

1,310.8

1,417.1

NY

0.3

0.3

0.7

0.7

1.4

3.4

NE

0.9

0.9

1.8

1.8

3.5

8.9

STV

0.2

0.2

0.4

0.4

0.7

1.8

SPP

2.4

4.8

14.4

14.4

444.5

480.6

NWP

7.7

13.2

8.6

1.5

275.2

306.1

RA

4.0

4.0

7.9

19.9

162.9

198.7

CNV

2.4

0.7

0.7

0.7

15.6

20.1

  Total

27.7

40.5

80.6

87.7

2,223.2

2,459.6

Notes: EIA employs five discrete cost steps. Steps 1 and 2 represent two cost levels for wind reserves, either economically accessible now or in the very near future. Reserves plus higher cost steps 3 and 4 yield technically accessible resources, those which could reasonably become reserves by 2020. Step 5 represents that part of wind resources which EIA does not consider economically accessible by 2020 under any normal circumstances. Two regions, MAIN and FL, have no known economically useful wind resources. Totals may not equal sum of components due to independent rounding.

Source: Energy Information Administration, Office of Integrated Analysis and Forecasting.