Wind Power Is Cheap and Widely Available

Wind power is currently the cheapest form of direct solar energy. This is due, in part, to its simplicity—wind blows on a wind turbine, and the rotation of the turbine blades generates electricity. Most of the early development of wind 

Within a decade it may well drop below 1 cent per kilowatt-hour, which is significandy cheaper than the cost of electricity from conventional sources such as coal. 

For people who purchase small wind turbines for their home, unused electricity causes their electric meter to run backwards As this happens, the 

Wind is free, but building and maintaining the wind turbines that convert wind energy to electrical energy is not. Over the past 20 years, the reliability and efficiency of wind turbines have improved, resulting in dramatically lower costs for electricity produced from wind power. In the near future look for highly efficient vertical-axis wind turbines in which the blades rotate like a carousel. 

About 4000 wind turbines at the Tehachapi site in southern California supply 626 megawatts of electricity. 

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