Tomorrow Today

Recycled Coal Mines – Storage Space for Renewable Energy?

Watch video 03:37

Surplus power generated by renewable energy sources needs to be stored because the wind isn't always blowing and the sun doesn't always shine. Jochen Bard, a physicist from the Fraunhofer Institute for Wind Energy and Wind Energy System Technology (IWES) in Kassel tells about using decommissioned coal mines to set up pump storage power plants, an approach that could be a hit in other countries.