EDF power solutions has been selected to develop a 250 megawatt (MW) electricity storage system in Germany as part of the Grid Booster project led by Amprion GmbH, the electricity transmission system operator. The contract involves five battery units spread across several sites, designed to support the north-to-south electricity transfer and reduce network congestion and imbalances.
A system deployed across five strategic locations
Each battery will have a capacity of 50 MW, making this one of the largest ongoing storage projects in Germany. The sites were chosen to maximise the system’s economic efficiency while also enabling use by the distribution network operator Westnetz GmbH (LVN). In addition to stabilising the transmission grid, the installation can be used to relieve the regional grid when required.
According to project specifications, the system will enable better utilisation of existing power lines. This approach aims to strengthen electricity flows from wind and solar farms in northern Germany to the more consumption-heavy south. The introduction of the Grid Booster represents a new feature on the German market, as the system’s use will be adjusted based on seasonal and operational needs.
A seasonal and shared operation model
The system will follow a seasonal operational model. During the winter period, Amprion will control the batteries to ensure high-voltage grid stability. In summer, EDF power solutions will manage them on the market to provide flexibility services based on local production and demand conditions.
The project also aims to reduce redispatch measures, which are often costly for network operators. This optimisation could help lower grid costs for end customers by reducing corrective interventions due to congestion.
EDF power solutions will be responsible for all maintenance and technical operations over the full project lifespan. With more than 800 MW of operational storage capacity and 1.2 gigawatts (GW) under development, the group continues to expand its presence in large-scale storage projects in Germany.
