The construction of hydropower stations can drive economic development, convert water into electricity, recycle resources and protect the environment. Some hydropower stations are often used for flood control, irrigation, shipping and handling of trees in addition to the buildings required for power generation , Over the fish and other services for the purpose of comprehensive utilization of other buildings. The complex of these buildings is called a hydropower hub or a hydro-junction.

The world's largest surface floating photovoltaic power station is located in Panji District, Huainan City, Anhui Province. It is constructed by the Three Gorges New Energy Co., Ltd. of China Three Gorges Corporation using idle water surface in mining subsidence area. It is planned that all grid-connected power generation will be realized in May 2018, About 150 million kwh of clean power, equivalent to about 530 hectares planted broadleaf forest, the annual savings of about 53,000 tons of standard coal, reducing carbon dioxide emissions of about 19.95 million tons, reducing deforestation of about 54,000 cubic meters, to meet about 94,000 Electricity needs of urban and rural families. Compared with traditional photovoltaic power plants, floating photovoltaic power plants are used to install photovoltaic power generation components on floating bodies. They have the function of not occupying land resources, reducing the evaporation of water, and floating bodies blocking sunlight to inhibit the growth of algae. At the same time, Cooling cooling can significantly improve power generation efficiency.

Hydropower station construction can also mobilize the control of personnel to promote employment. The idle water surface in the coal mining subsidence area turns into a green energy base, which helps boost and lead the national new energy development mode and helps local residents to get out of poverty and promote economic development. At the same time, the state is also introducing policy support. The National Energy Administration promotes the combination of idle water surface in coal mining subsidence area and the development of new energy to promote the green development of coal mining subsidence area and boost and lead the development mode of new energy.