The provider Fluence has already set up a number of power storage systems internationally. The project in Kupferzell is by far the largest in Germany.
Dusseldorf Although Germany is in the middle of the energy crisis, many wind turbines stand idle every day. They are stopped when they produce more electricity than the grid can handle. This costs electricity consumers a lot of money: in 2021, the so-called redispatch costs for such security measures were around 2.3 billion euros.
That could change in the future. The world’s largest grid storage facility in north-eastern Baden-Württemberg is scheduled to go into operation in just two and a half years. Lithium-ion batteries with a capacity of 250 megawatts will then be spread over an area the size of 4.5 soccer fields in several containers next to the substation in Kupferzell.
It is the first of the so-called “grid booster” projects of the transmission system operators, which are intended to help keep the power supply paths stable with more and more renewables. “It’s not a pilot system, but something completely new for Germany,” says Markus Meyer, head of storage manufacturer Fluence, in an interview with the Handelsblatt. The Siemens subsidiary will build the large storage facility in Kupferzell. It will be operated by the transmission system operator responsible, TransnetBW.
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