International Journal of Research in Engineering Technology -– Volume 2 Issue 4, May - June 2017 ISSN: 2455-1341 http://www.ijretjournal.org Page 30 Wind energy developments and policies in India: A review Mukesh Kumar Rathore 1 , Meena Agrawal 2 *(Department of Energy, Maulana Azad National Institute of Technology, Bhopal 462007, M.P., India) I. INTRODUCTION As indicated by the estimations done by International Energy Agency (IEA), the worldwide energy demand is rising by 1.6% every year, with almost around 65% of increment from developing countries [1]. Also the demand scenario, the total energy consumptions will be increasing up to 75% from the year 2008–2035 [2].Since nearly 1985, fossil fuels have taken over the other energy sources however, it causes to grow up the carbon dioxides rates in the climate which reasons for the environmental pollutions. Over, the energy production from non-renewable energy sources are additionally going to reduces in everyday on the grounds that the deficiency of the sources according to the necessities. It follows that when choosing economically viable wind energy conversion system of very high power rating, one may wisely inspect the points of interest in perspective of the lessened number of units that should be introduced [3]. Wind energy is accessible for all intents andpurposes wherever on Earth, however there are wide deviations in wind power and stability. A wind turbine's blade change over kinetic energy from the blow of air into rotational energy; a generator at that point convert this rotational energy to electrical power. The wind energy that is accessible directly proportional to the dimensions of the rotor and to the cubing of the wind speed. Ideally, when the wind speed is doubled, the wind power increments by a factor of eight [4]. The three most important fundamentals of wind energy generation are the turbine type (vertical/horizontal-axis), establishment character- istic (onshore/ offshore) and grid connectivity (connected/ stand-alone). Most vast wind turbines are up-wind horizontal-axis turbines with three blade. Inventive plans for vertical-axis wind turbines are being uses in urban areas, especially in India [5]. With aerodynamic power loss of 50-60% at the blade and rotor, mechanical power loss of 4% at the gear apparatus, and a further 6% electromechanical power loss at the generator, generally generation efficiency is normally 30-40% [3]. Abstract: Wind energy is the great spectacular, clean and economical energy source among all the renewables. Since last few years this energy has been most commercialized in the worldwide and many portion of the nations have begun their projections on this area. The nations like China, USA, Germany, India and Spain have leaded by the installation capacities of wind energy in the international markets. During the last decade, India shared the fourth highest wind energy capacities in the world. India government has been providing the attractive policies for the resident wind energy manufacturing companies with the developers. This paper presents an exhaustive compressive overview on current developments of wind energy, potentials. The contributions of wind manufacturers and developers, mismatching between the generating power and installed capacities, policies and its impacts and future prospectus of wind energy developments in India and worldwide has also been presented. Keywords —Wind energy, Wind energy developments, Wind energy policy. RESEARCH ARTICLE OPEN ACCESS