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.

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Description

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.

Contractors involved

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Alstom, Brown Boveri & Cie and Uniper have delivered the energy storage project.

Additional information

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.

Methodology

All publicly-announced energy storage projects included in this analysis are drawn from GlobalData’s Power IC. The information regarding the projects are sourced through secondary information sources such as country specific power players, company news and reports, statistical organisations, regulatory body, government planning reports and their publications and is further validated through primary from various stakeholders such as power utility companies, consultants, energy associations of respective countries, government bodies and professionals from leading players in the power sector.