Clean Energy Wire
Summary
Germany is stepping up its research on geothermal energy storage, a way of storing heat energy between seasons using water, business daily Handelsblatt reported. Research is currently underway in former coal mines in Germany's Ruhr valley, for example, to explore the potential of storing heat that can later be used to warm homes, as well as buildings in the public and private sector.
Geothermal energy storage works by heating water and channelling it back underground, with the surrounding rock retaining the heat for months in suitable locations. The warm water can then be pumped back to the surface and used for district heating, for example.
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