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  • Project profile

    STEAG large-scale battery system

    From development to practice

    In the form of the LESSY system, installed at the Völklingen-Fenne power plant, STEAG used a large-scale battery (1 MWh capacity) for primary control power from February 2014 to the end of February 2016, and gathered valuable experience in doing so. At the end of March 2016, a start was made on constructing the new large-scale battery system. The Lünen site was the first to be tackled.

    In September 2016, after prequalification by transmission grid operator Amprion, the large-scale battery system sites in Lünen, Herne and Weiher took part successively for the first time in the bidding for primary control power, with success.