BERLIN, Oct. 14, 2026 (GLOBE NEWSWIRE) -- Vattenfall and Fluence Energy, Inc. ("Fluence") (NASDAQ: FLNC), a global market leader delivering intelligent energy storage systems, services, and asset optimization software, have signed an agreement for the delivery of the planned battery storage facility in Brunsbüttel, as well as long-term service support. With an output of 254 MW and a storage capacity of over 1,000 MWh, the Brunsbüttel project, which is planned to be built at the site of the nuclear power plant that is currently being decommissioned, is expected to be among the largest battery energy storage projects in Germany and represents Vattenfall’s largest battery project to date. The project is scheduled to become operational by the end of 2028.
The 4-hour storage facility will utilize Fluence’s Gridstack™ Pro 5000 platform, a large-scale battery storage solution including battery systems, power conversion equipment, and an energy management system designed to support grid resilience, renewable energy integration, and reliable system performance. Fluence will deliver the project on a turnkey basis, including engineering, procurement, construction, commissioning, and long-term service support, helping ensure the facility operates at high performance throughout its entire lifetime.
Germany is currently the leading battery energy storage market in Europe, adding 6.6 GWh in 2025, according to SolarPower Europe. Growth in Germany’s battery storage market is being driven by the rapid expansion of wind and solar power, increasing electricity-price volatility, declining technology costs, and the ability of storage assets to combine revenues from energy trading and grid services.
“Projects like this battery storage facility play an important role in strengthening the resilience of the energy system and enabling the continued integration of renewable power generation. Together with Fluence as our long-term partner, we are creating a flexible asset that can respond to changing electricity market needs for many years to come. The project will further strengthen our portfolio of flexibility solutions and support the transition away from fossil fuels,” said Claus Wattendrup, Head of Solar & Batteries, Vattenfall.
"Our long-standing relationship with Vattenfall now spans eight projects across three European countries, reflecting our shared vision for a more flexible energy system. Having delivered more than 20 battery energy storage projects in Germany, Fluence is proud to be a leader in scaling battery storage as critical energy infrastructure in the country," said Julian Jansen, VP & Managing Director, Fluence Germany.
Demand for utility-scale battery storage continues to grow across Germany and Europe. As wind and solar capacity expands, the need for flexible technologies capable of balancing supply and demand in real time is increasing.
The Brunsbüttel battery project is a key component of Vattenfall’s flexibility strategy and will nearly double the company’s existing battery storage capacity. Construction of the project is expected to begin in 2027. Commissioning of the battery storage facility and its grid connection to the 50Hertz 380 kV transmission network is planned for the end of 2028.
About Vattenfall
Vattenfall is a European energy company with approximately 21,000 employees. For more than 100 years we have electrified industries, supplied energy to people's homes and modernised our way of living through innovation and cooperation. We are committed to building a future where everyone can choose fossil-free ways to move, make and live. To succeed we must become fossil free ourselves. But that's not enough. We are looking beyond our own industry to see where we can really make a difference. Together with our partners, we are taking on the responsibility to find new and sustainable ways to electrify transportation and industries.
About Fluence
Fluence Energy, Inc. (Nasdaq: FLNC) is a global market leader delivering intelligent energy storage and optimization software for renewables and storage. The Company's solutions and operational services are helping to create a more resilient grid, from powering the next generation of AI-driven data centers to unlocking the full potential of renewable portfolios. With gigawatts of projects successfully contracted, deployed, and under management across nearly 50 markets, the Company is transforming the way we power our world for a more sustainable future.
