Wind power
Wind power is the world's fastest growing electricity generation technology. Wind is a renewable resource because it is inexhaustible. It is a result of the sun shining unevenly on the earth. The corresponding daily and seasonal changes in temperature consistently generate wind, producing a fuel source that can never be depleted.
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State-of-the-art wind power plants use large spinning blades to capture the kinetic energy in moving wind, which then is transferred to rotors that produce electricity. At the best wind fuel sites, wind plants today are nearly competitive with the conventional natural gas-fired combined-cycle plants -- even when natural gas prices have recently been at historically low levels. Regions where average wind speeds exceed 12 miles per hour are currently the best wind power plant sites.
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