Wind Energy is an indirect form of Solar Energy. About 1% of the total solar radiation that reaches earth is converted into energy of wind. Wind results from differential heating of the earth and its atmosphere by sun. As the sun heats different parts of the earth at different rates, air circulates from cold to warm areas producing winds. Wind energy has been used for thousands of years to propel sailing ships and for pumping water and grinding grain.
The application of wind energy has several advantages like:
- low gestation period
- no raw-material cost
- non-polluting etc.
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