Wind Resource - Wind Energy: Renewable Energy and the Environment - page 53

TABLE 4.1
Classes of Wind Power Potential at 10 and 50 m Levels

10 m 50 m

Class Power Speed Power Speed

W/m 2 m/s W/m 2 m/s

0 0 0

0

1

4.4 200 5.6

100

100 4.4 200 5.6

2

150 5.1 300 6.4

150 5.1 300 6.4

3

200 5.6 400 7.0

200 5.6 400 7.0

4

250 6.0 500 7.5

300 6.4 600 8.0

5

400 7.0 800 8.8

400 7.0 800 8.8
1,000 9.4 2,000 11.9
7 1,000 9.4 2,000 11.9
Note: Values at 50 m are based on 1/7 power law from data at 10 m. Wind speeds are the equivalent value based on a
Rayleigh distribution to give that power.

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FIGURE 4.1 Wind power map for the United States. (Image from NREL. With permission.)