It is everyone's responsibility to create green energy and protect the green earth. Solar energy is a kind of renewable energy, with reliable source, no noise, low pollution, low energy consumption, easy installa- tion, easy maintenance and other advantages. It does not consume non-renewable and carbon-containing fossil energy with limited resources, and does not emit greenhouse gases and pollutants during use. It is in harmony with the ecological environment and in line with the strategy of sustainable economic and social development.