Wind Energy

Introduction

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), Govt. 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. New and Renewable Energy Development Corporation of A.P. Ltd (NREDCAP), the Nodal Agency in A.P. has taken up wind mapping and wind monitoring projects with the support of MNRE, Govt. of India, Delhi and C-WET, Chennai to identify windy sites. Andhra Pradesh is one of the States in the country having windy sites suitable for setting up of wind power projects.

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