Wind Power Density
Estimates of wind power density are presented as wind class, ranging from 1 to 7. The speeds are average wind speeds over the course of a year, although the frequency distribution of wind speed can provide different power densities for the same average wind speed.
| Class | 10 m (33 ft) | 30 m (98 ft) | 50 m (164 ft) | |||
|---|---|---|---|---|---|---|
| Wind power density (W/m2) | Speed m/s (mph) | Wind power density (W/m2) | Speed m/s (mph) | Wind power density (W/m2) | Speed m/s (mph) | |
| 1 | 0 - 100 | 0 - 4.4 (0 - 9.8) |
0 - 160 | 0 - 5.1 (0 - 11.4) |
0 - 200 | 0 - 5.6 (0 - 12.5) |
| 2 | 100 - 150 | 4.4 - 5.1 (9.8 - 11.5) |
160 - 240 | 5.1 - 5.9 (11.4 - 13.2) |
200 - 300 | 5.6 - 6.4 (12.5 - 14.3) |
| 3 | 150 - 200 | 5.1 - 5.6 (11.5 - 12.5) |
240 - 320 | 5.9 - 6.5 (13.2 - 14.6) |
300 - 400 | 6.4 - 7.0 (14.3 - 15.7) |
| 4 | 200 - 250 | 5.6 - 6.0 (12.5 - 13.4) |
320 - 400 | 6.5 - 7.0 (14.6 - 15.7) |
400 - 500 | 7.0 - 7.5 (15.7 - 16.8) |
| 5 | 250 - 300 | 6.0 - 6.4 (13.4 - 14.3) |
400 - 480 | 7.0 - 7.4 (15.7 - 16.6) |
500 - 600 | 7.5 - 8.0 (16.8 - 17.9) |
| 6 | 300 - 400 | 6.4 - 7.0 (14.3 - 15.7) |
480 - 640 | 7.4 - 8.2 (16.6 - 18.3) |
600 - 800 | 8.0 - 8.8 (17.9 - 19.7) |
| 7 | 400 - 1000 | 7.0 - 9.4 (15.7 - 21.1) |
640 - 1600 | 8.2 - 11.0 (18.3 - 24.7) |
800 - 2000 | 8.8 - 11.9 (19.7 - 26.6) |
Read more about this topic: Wind Profile Power Law
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Lonely from the beginning of time until now!
Trees fall, the grass goes yellow with autumn.”
—Li Po (701–762)
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