A large solar-storage power station built on an open-pit mine dump recently has connected to the grid in Xilinhot City, north China's Inner Mongolia Autonomous Region.

An open-pit mine dump refers to the rocks and coverings stacked into a dedicated place during the open-pit mining, which require a large amount of land.

The photovoltaic project used three idle dumps, covering an area of 7,500 mu (500 hectares).

With an installed capacity of 153,000 kilowatts, it will meet the demand of 200,000 households for a year with an annual generating capacity of 224 million kilowatt-hours of green electricity.

According to its developer, photovoltaic panels installed on dump sites can reduce evaporation by 20 to 30 percent.

Turing idle land into photovoltaic power stations can not only solve the increasingly tense photovoltaic land use issue, but also allow the damaged land to be treated to a certain extent, providing replicable and scalable experience in ecological restoration and governance and green transformation, it added.