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In the last few years, many renewable energy (RE) technologies have become commercially viable. The most advanced and potent RE technology for power generation is Wind Power. India has emerged as the fourth largest producer of grid connected power from wind, with a cumulative installed capacity of 5340 MW, as on 31 March 2006. This is expected to touch the figure of 12,000 MW or more by 2010 — the present estimated potential for wind power in the country is 45,000 MW. There are more than 210 windy sites identified across the country, with development taking place in 9 states. Some positive factors helping wind power development are:
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Introduction 
There
is an evolutionary symbiosis between energy and civilisation. The
progress achieved by modern human civilization is largely the result
of the ability to discover new forms of usable energy in large
quantities. But environmentally destructive methods of producing
energy currently adopted by humans everywhere, threaten to destroy
the progress and human welfare achieved so far. Today's fossil
fuel-based energy economy is unsustainable in economic, social, and
ecological terms. But it is perhaps not too late to mend our ways.
The task before us is to engineer the transition from a fossil
fuel-based energy system to a renewable energy economy, without
major social, economic, or ecological disruptions.