Wind Power Class

Wind Speed (m/s)

WPD (w/m²)

Resource Potential

1

0 - 4.9

0 - 243

Not suitable

2

4.9 - 6.9

243 - 378

Marginal

3

6.9 - 7.5

378 - 500

Fair

4

7.5 - 8.1

500 - 616

Good

5

8.1 - 8.6

616 - 748

Excellent

6

8.6 - 9.4

748 - 978

Outstanding