With a total investment of about 450 million yuan, this project utilized the plant rooftops of 539175 m2 of 23 large and medium-sized enterprises in Tonglu Economic Development Zone to install 50MW efficient crystalline silicon solar cells. The estimated annual power generation is 47 million kWh, more than 70% of which will be used by these enterprises. CYG SUNRI has completed the construction of a comprehensive cloud platform for the project, and it can carry out remote operation and maintenance monitoring, summary and analysis of the PV array data of each rooftop via the PRS-3000G PV operation and maintenance system, and guide the users to organize specific service development.