The Kraftwerk Huntorf – Compressed Air Energy Storage System is a 321,000kW energy storage project located in Grose Hellmer 1E, Lower Saxony, Germany.
The electro-mechanical energy storage project uses compressed air storage as its storage technology. The project was commissioned in 1978.
The Kraftwerk Huntorf – Compressed Air Energy Storage System is owned by Uniper (100%), a subsidiary of Fortum.
The key applications of the project are black start, electric energy time shift, electric supply reserve capacity – spinning and frequency regulation.
Alstom, Brown Boveri & Cie and Uniper have delivered the energy storage project.
The facility stores the compressed air in two “”solution-mined”” salt caverns which comprise a total of 310,000 cubic meters. (Water was pumped into and out of a salt deposit to dissolve the salt and form the cavern.) The depth of the caverns is more than 600 m which ensures the stability of the air for several months’ storage, and guarantees the specified maximum pressure of 100 bar. One cavern is cycled on a diurnal basis. The second cavern serves as a black start asset if the nearby nuclear power plant unexpectedly goes down. Man Energy Solutions has provided axial and radial compressor train to the project.
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