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. The development in this sector was accelerated
after the formation of Department of Non-Conventional Energy Sources and
later renamed as Ministry of New and Renewable Energy (MNRE), Government. of
India., which offers policy and financial incentives to projects based on
renewable energy sources in the country.
The oil crisis in 1973 revived
the interest in the renewable sources of energy including wind energy.
Different agencies like NAL, Bangalore, BHEL and some of the private
entrepreneurs took up the design and development of windmills for pumping
applications. MNRE had launched the wind resource assessment programme with
the help of IITM now Centre for wind energy technology, Chennai to identify
windy sites for various applications of wind energy. Telangana State
Renewable Energy Development Corporation Limited. (TSREDCO), the Nodal
Agency in Telangana has taken up wind mapping and wind monitoring projects
with the support of MNRE, Government. of India, Delhi and C-WET, Chennai to
identify windy sites.