With the development of technology and the strong demand of the country for clean energy, the proportion of photovoltaic power generation as one of clean energy is increasing. In end of 2017, photovoltaic power generation exceeded 110 billion kilowatt-hours. It accounted for 1.7 percent of the total electricity generated in the whole society in that year. The new generation of electricity exceeded 60 billion kilowatt-hours, and accounted for 15 percent of the new generation in that year. It became an important new power source. In 2012, The photoelectric conversion efficiency of the photovoltaic module is on average 14%. By 2017, it was close to 19%, and the average annual increase was almost 1%. This progress is unprecedented in the history of photovoltaic development. Our company can provide solar simulation equipment for photovoltaic laboratories. Improve the test efficiency.