Shijiazhuang Metro West Zhaitong Comprehensive maintenance base in Hebei Province has completed the first domestic subway car depot photovoltaic power generation project, which provides more than 1 million KWH of green electricity for the subway every year after the project is put into use. The distributed photovoltaic power station selects 255Wp type polysilicon photovoltaic module, which is fixed installation with the best inclination Angle. More than 3000 modules are arranged in total, and the installation capacity is about 1MW. The project plans to lay 12,000 square meters of solar panels, which can provide 1,000 kilowatt-hours of electricity per hour after completion, providing sufficient electricity for the depot's own operation and maintenance base. Surplus power is also planned to be transferred to the Metro grid to provide electricity service for Line 1 locomotives. The project has a very important demonstration effect and good economic benefits for China's subway industry's energy saving and emission reduction, green environmental protection.