Vattenfall will build a battery energy storage asset in Germany's Brunsbuttel with output of 254 megawatts and storage capacity of about 1,000 megawatt-hours, making it one of the largest such projects in the country to date, the company said on Thursday.
The project will be sited on a former nuclear power station that is now being decommissioned. The whole project and grid connection should be operating by the end of 2028, the company said.
Claus Wattendrup, Vattenfall head of solar and batteries said that such projects are vital to help balance demand and supply on the grid and to integrate more solar and wind power to reduce reliance on fossil fuels and boost energy security.
Vattenfall cited a forecast by Germany's transmission system operators who expect BESS capacity will exceed 80 GW by 2040. The Brunsbuttel project, Vattenfall's largest storage undertaking to date, will double the company's battery energy storage capacity in a single stroke.
The company aims to build a portfolio of 1,500 MW of capacity by 2029, it said.