20 Mar '17, 8pm

Germany Converts Coal Mine Into Giant Battery Storage for Surplus Solar and Wind Power

Similar to a standard hydroelectric power plant, pumped hydroelectric storage stations generate power by releasing water from a reservoir through a turbine to a second reservoir at a lower altitude. Rather than releasing the outflow, however, the water is then stored in the lower reservoira until it can be pumped back up to the top reservoir using cheaper, off-peak power or another renewable energy source. In the case of the Prosper-Haniel plant, the lower reservoir will be made up of more than 16 miles of mine shafts that reach up to 4,000 feet (1,200 meters) deep. The station's 200 megawatts of hydroelectric power would fit into a mix of biomass, solar and wind power. It's not a perpetual motion machine, but the water stored in the surface reservoir will effectively act as as backup "battery" that could kick in and fill any gaps in the energy mix whenever the other sourc...

Full article: http://www.ecowatch.com/coal-mine-hydroelectric-232172435...

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German coal mine set to become "giant battery" for storing renewable energy

German coal mine set to become "giant battery" ...

inhabitat.com 21 Mar '17, 12pm

A German coal mine is about to become a massive battery for storing electricity from renewable energy sources. The Prosper...

Germany Converts Coal Mine Into Giant Battery S...

ecowatch.com 26 Mar '17, 10pm

Similar to a standard hydroelectric power plant, pumped hydroelectric storage stations generate power by releasing water f...

German Coal Mine Converted into Renewable Energy Storage

German Coal Mine Converted into Renewable Energ...

greenoptimistic.com 22 Mar '17, 6am

The Prosper-Haniel hard coal mine in North-Rhine Westaphalia is a show piece of the right way forward. It is a hard coal m...

via @CleanTechnica

via @CleanTechnica

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