Project: Unique Battery Storage System To Be Built in Aachen


The E.ON Energy Research Center at RWTH Aachen, the energy supplier E.ON SE, the battery manufacturers Exide Technologies GmbH, beta motion GmbH, and SMA Solar Technology AG are completing a large-scale 5 MW modular battery storage system in Aachen this year.

Due to its power range and high level of modularity, the battery storage system will be unprecedented, opening up a wide range of applications. In the first stage, the project will focus on the integration of renewable energy sources, testing of a decentralized supply of control power to stabilize grid operation, and electricity price arbitrage.

The project, titled Modular Multi-Megawatt Multi-Technology Medium-Voltage Battery Storage, is unique for its modular structure, combining different battery technologies in an optimal way. It consists of lithium-ion batteries to meet short-term demand, high-temperature batteries to supply power for several hours, and lead-acid batteries for short and medium discharge times.

The E.ON Energy Research Center at RWTH Aachen University will operate the system, be responsible for grid integration, and provide scientific support. E.ON is responsible for planning and construction of the battery storage facility and for developing and testing marketing strategies for future products for the energy market. The Institute of Power Systems and Power Economics at RWTH Aachen University (IAEW) will provide research support for the project. The manufacturers Exide Technologies GmbH, beta-motion GmbH, and SMA Solar Technology AG will supply technical components and conduct operational testing.

Project Management Jülich will coordinate the use of public funds on behalf of the German Federal Ministry of Economic Affairs and Energy.

The project receives a total of 6.5 million Euros in funding from the Federal Ministry for Economic Affairs and Energy.


Institute of Power Systems and Power Economics