Wind Energy Sources
Wind turbines are widely used in several countries to generate electrical energy to meet the energy needs of the local people. Coastal regions, hilly locations, and open desert lands are best suited for the installation of wind turbines. Significant increase in greenhouse gases has compelled various countries with long coastal regions to consider the potential application of wind turbines to generate electricity. Wind turbines, when installed in coastal regions, yield optimum system performance. According to the Global Wind Energy Council  China has installed more wind turbines in 2007 than any other country, and is producing electrical energy exceeding 3 GW (3 x 1012 W). The council further states that China is the third fastest-growing wind turbine market behind the United States and Spain. According to wind energy planners, China was expected to add another 4 to 5 GW of wind turbines by the end of 2008, giving the country a capacity exceeding 10 GW by the end of 2008. Most of the Chinese wind turbines are operating in Inner Mongolia desert regions. These wind energy systems are operating in conjunction with the utility grid system. Denmark is considered a wind-energy pioneer in the entire world.