Construction Begins on 400 MW GigaBattery Boxberg in Germany
On August 31, 2026, construction officially commenced on the GigaBattery Boxberg 400, a massive 400 MW / 1,600 MWh battery energy storage system (BESS) located in Boxberg, Saxony. The project is a joint effort involving LEAG Clean Power, HyperStrong, and Siemens Energy, marking a significant milestone in Germany's transition away from fossil fuels and towards renewable integration.
Project Specifications and Technology
The 4-hour duration facility is being constructed on the site of a retired thermal power plant. Haibosichuang's German subsidiary is handling the full EPC delivery, providing the HyperBlock III liquid-cooled lithium iron phosphate energy storage system. Meanwhile, Siemens Energy is supplying the critical 380 kV GIS high-voltage grid connection equipment, ensuring seamless integration with the transmission network.
Strategic Importance for Eastern Germany
Owned by LEAG Clean Power GmbH, the GigaBattery Boxberg 400 is a cornerstone of the broader GigawattFactory comprehensive renewable energy base. LEAG plans to achieve 7 GW of wind and solar capacity by 2030, and this large-scale storage asset will play a pivotal role in supporting grid regulation and renewable energy consumption in eastern Germany.
The 4-hour energy storage configuration is specifically designed to meet the latest capacity market bidding rules and access requirements for flexible regulation resources set by the German Federal Network Agency in 2026.
Beyond Boxberg, LEAG is aggressively expanding its German BESS portfolio amid strong market fundamentals. The company is also developing the 1 GW / 4 GWh GigaBattery Jänschwalde 1000 in partnership with Fluence, expected to be completed by 2027 or 2028. Additionally, a recently started 100 MW / 400 MWh system with Fluence further underscores the robust investment climate in the German utility-scale storage sector.
Source: Digitalverkehr, Ofweek, Seetaoe
This article was assisted by AI analysis. Please refer to the original source for official information.