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Solar Energy ,generally refers to the sun radiation use for power generation in modern society .Since the earth formed ,the creature is mainly provided by the sun heat and light , and since ancient times people also know to dry objects by sun ,and as a physical methods to preserved food , such as salt making , dried salted fish and so on. Under the condition of the traditional energy is decreasing, and the solar energy has become an important part of the human energy use , and develop constantly .The Solar Energy is a new kind of renewable energy to generate electricity .