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Compressed air storage

Underground compressed air

Adiabatic storage power plants

Adiabatic storage power plants (AA-CAES) store not only the compressed air but also the heat that is released upon compression of the air. For generating the electricity, the heat is returned to the compressed air flowing to the turbine. This renders the use of natural gas unnecessary. AA-CAES plants should therefore achieve efficiencies of up to 70 per cent. However, the development of such plants is still in its infancy. Almost all components must be newly developed.

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In adiabatic storage power plants, the thermal storage system increases the efficiency.


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Supported by: The Federal Government on the basis of a decision by the German Bundestag


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