solar photovoltaic （Solar PV） system is the use of Solar PV effect of semiconductor materials, the solar radiation directly into a new electricity generating system, a stand-alone and grid operation in two ways. Stand-alone Solar PV power generation system needs to have the battery as the energy storage device, mainly for non-grid areas in remote areas and scattered population, the entire system cost is very high; in the areas of public power grid, grid-connected Solar PV power generation system and network Operation, eliminating the need for batteries, not only can greatly reduce the cost, but also has higher power generation efficiency and better environmental performance.

Applications of Solar PV power generation, also play an active role in many fields. Such as: solar garden lights, solar home systems, village power supply independent systems, Solar PV pumps communication power, oil pipeline cathodic protection, optical fiber cable station power, desalination systems, cities and towns in the road signs, highway road signs. Before and after the turn of the century, Europe and the United States and other advanced Solar PV power generation system and incorporated into the city power supply system in remote areas into the natural direction of the village.