The current annual production capacity of wind turbines manufactured in India is about 3 000 MW to 3 500 MW, including turbines for the domestic as well as for export markets (GWEC, 2009). Major wind turbine manufacturers in India are Suzlon, Enercon, RRB Energy and Vestas; together they account for more than 85% of the new capacity added in India between 2009 and 2010 (WPI, 2010). Indigenously produced wind turbines and turbine blades have been exported to the United States, Europe, Australia, China and Brazil.