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Find Your Average Wind Speed
There is no linear correlation between wind speed and wind energy. Doubling wind speed, from 10 mph to 20 mph for example, does not simply double the energy in the wind. Rather, the energy increases eight times. A site with an average 15 mph wind speed is much more valuable than a site with an average wind speed of 13 mph. Although there is only a small difference in wind speed, the windier site contains nearly 60 percent more energy. Wind speed varies from year to year, season to season, and with the time of day. Wind speed also varies with height above the ground. Typically, the term used most often to describe the wind resource is the "annual average wind speed." In general, an annual average wind speed of at least 14.3-15.7 mph at 50 meters is desirable. More wind is nearly always better. Important Information About Small Turbine Projects |
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