Danish firm plans major battery storage in Wilster
Danish company Copenhagen Energy plans to construct one of Germany's largest battery storage facilities in Wilster, Schleswig-Holstein. The plant is designed to store and feed in wind power.
Danish energy company Copenhagen Energy has announced plans to build one of Germany's largest battery storage facilities in Wilster, Schleswig-Holstein. The project aims to enhance the stability of the German power grid and support the integration of renewable energy.
The planned facility will be located adjacent to TenneT's 380 kV substation in Wilster. The plant is designed with a capacity of up to 500 megawatts and a storage capacity of 2,000 megawatt-hours, making it a significant addition to Germany's energy storage capabilities.
The primary function of the battery storage is to absorb surplus wind power from Schleswig-Holstein, a region that is a major producer of wind energy. When needed, the stored energy will be fed back into the grid. This measure will help prevent curtailment of wind turbines when grid capacity is full, ensuring more efficient utilization of renewable energy.
Wilster is considered a strategic hub for the "Energiewende" (energy transition) due to its location where major power lines like NordLink and SuedLink converge. Copenhagen Energy has already acquired the necessary land and has applied for grid connection from TenneT. If the development plan process with the city of Wilster proceeds as scheduled, construction is expected to begin in 2028, with the facility anticipated to be operational by 2030.