The change in the power available in the wind due to changes in the wind speed or velocity profile; the wind power profile is proportional to the cube of the wind speed profile.
Power of the wind
Wind speed (m/s)
Wind power (W/m)
0
0
1
0.6
2
4.9
3
16.5
4
39.2
5
76.2
6
132.3
7
210.1
8
313.6
9
446.5
10
612.5
11
815.2
12
1058.4
13
1345.7
14
1680.7
15
2067.2
16
2508.8
17
3009.2
18
3572.1
19
4201.1
20
4900.0
21
5672.4
22
6521.9
23
7452.3
For air density of 1.225 kg/m3, corresponding to dry air at standard atmospheric pressure at sea level at 15° C.
The formula for the power per m2 in watts = 0.5 × 1.225 × v3, where v is the wind speed in m/s.