Abstract:try,the power generation distribution characteristics of the photovoltaic system were analyzed based onthe operation data from October 2020 to September 2021. The correlation between power generation andPM2.5,dust fall,temperature,sunshine duration,total shortwave radiation intensity and other factors wasstudied. The practical benefit of "self-use,surplus internet access" mode was explored. The resultsshowed that the power generation from November 2020 to January 2021 was relatively low,and the low⁃est value occurred in November 2020. The monthly power generation from May 2021 to August 2021was relatively high,and the maximum value appeared in May. In a single day,the power generation from11:30 to 13:30 accounted for 22% to 28% of the whole day. The correlation coefficients between sun⁃shine duration,total shortwave radiation intensity and power generation were 0.984 and 0.972,respec⁃tively. If all the power generation was self-used,the benefit was the highest. The investment cost couldbe recovered in three and a half years. During the service period,the income was 7 times of the invest⁃ment. In the meantime,1 570 tons of coal could be saved and 4 935 tons of carbon could be reduced. Close-