The energy is the important matter condition of the human survival and the development. Coal, petroleum, natural gas and other fossil energy support in 19 and twentieth Century in recent 200 years, the progress of human civilization and the development of economy and society,But coal, petroleum, natural gas and other non-renewable energy increasing consumption, not only make the mankind is faced with resource depletion pressure, but also feel the serious environmental problems threatening.At present, improving energy efficiency, development and utilization of renewable energy sources, protect the ecological environment, realizing sustainable development have become the common action of international renewable energy rich, clean, sustainable utilization. Strengthen the development and utilization of renewable energy, is to deal with the increasingly serious energy and environmental problems in the route one must take, also is the human society to realize the sustainable development of the route one must take.