First, the world more and more countries recognize that a sustainable development of society
Should be a solar energy can meet the social needs of future generations without endangering the future of society. Therefore, as much as possible with clean energy instead of high carbon content of fossil energy, energy construction principles should be followed. With the change in the form of energy, conventional energy storage declining, its price will inevitably rise, and control of environmental pollution must also be increased investment.
     Second, China is the world's largest producer and consumer of coal and coal products accounted for about 76% of the energy consumption structure, has become a major source of air pollution. Vigorously develop new energy and renewable energy use technology will be an important measure to reduce environmental pollution. Energy problem is worldwide, the transition to new energy coming sooner or later. In the long run, solar energy utilization technology a large number of applications and devices, will inevitably be constrained fossil energy prices.