- 400 megawatts of power; 700 megawatt hours of storage capacity
- Investment volume of around €230 million
- Commissioning planned for 2028
RWE is building Germany's largest battery storage facility to date at the Gundremmingen energy site. The 400-megawatt plant will have a storage capacity of 700 megawatt hours and will use the nuclear power plant's existing grid connection, which is currently being decommissioned. RWE is investing around €230 million in the construction of the new facility.
A symbolic ground-breaking ceremony for this flagship project took place today, attended by the Bavarian Minister-President Dr Markus Söder.
Dr Markus Söder, Bavarian Minister-President: 'Gundremmingen remains a key location in the Bavarian energy supply. In addition to the new battery storage facility, a 55-hectare solar park and a gas-fired power station are also set to be built. With an output of 400 MW and a capacity of over 700 MWh, the battery storage facility will stabilise the grid when there is no wind or sunlight. As Germany's most economically successful state, Bavaria needs a lot of energy. Many thanks to RWE and all its employees for their great commitment here on site.'
Dr Markus Krebber, CEO of RWE AG: 'The energy system of the future requires powerful storage facilities. By building Germany's largest battery storage facility in Bavaria, an attractive region for energy generation, we are sending a strong signal. Gundremmingen demonstrates our ongoing commitment to making consistent use of our sites, and this new storage facility is just the beginning.'
The Gundremmingen facility is a prime example of RWE's commitment to expanding its battery storage portfolio. It will be capable of supplying electricity continuously for almost two hours at a capacity of 400 MW. More than 200 containers housing around 850,000 lithium iron phosphate battery cells will be installed over the next few months. Thanks to state-of-the-art control technology and over 100 ultra-fast inverters, the facility will be able to supply or absorb electricity within milliseconds, helping to stabilise the power grid. The battery storage facility is scheduled to commence commercial operation in early 2028.
As a driver of the energy transition, RWE develops, builds and operates battery storage systems in the USA, Europe and Australia. The company currently operates battery storage systems with a total capacity of around 1.2 Gigawatts (GW), and has a further 2.7 GW under construction. As part of its growth strategy, RWE plans to significantly increase its worldwide battery storage capacity.
About the Gundremmingen energy site
For decades, the Gundremmingen site in the Günzburg district was a key part of Bavaria's electricity supply. Following the shutdown of the two nuclear power plant units in 2017 and 2021 respectively, the site is now undergoing safe decommissioning. Around 400 RWE employees continue to work there.
Source: RWE
