First Solar is continuing renewable energy. Solar energy is the most abundant energy humans can use. It is estimated that in the past 1.1 billion years long, the sun consumes only 2% of its own energy, over the next few billion years the sun will not change dramatically, so the sun can be used as a permanent energy is taken from the not best, inexhaustible. Irradiation to the ground 15 minutes of energy, and sufficient use around the world for a year. So long as to come up with a certain amount of initial investment, must be able to bring long-term economic benefits. Secondly, solar energy is absolutely clean, green energy, the use of solar energy can dispense with the problem of environmental pollution brought about by other energy. More importantly, solar energy can be free from political manipulation, is the property of all humankind. I think this is particularly important, because many international conflicts energy issues involved, affecting the normal life of the people, some time ago the Russian and Belarus gas dispute traumatic bee. However, if you use solar energy, these problems will automatically stay away from you away.