Meteorological data includes the conventional ground meteorological data and the solar energy resource radiation data. In the actual development of photovoltaic power generation projects, most investors use the radiation data from relevant meteorological databases to calculate the photovoltaic power generating capacity. At present, NASA and Meteonorm are the main sources of solar energy radiation data for early site selection and revenue estimation of photovoltaic power stations. They are the industry standard of solar resource query software in the photovoltaic industry.