RWE to invest in major battery storage project in western Germany

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COP27 saw the latest expansion of the First Movers Coalition, made up of 65 companies with a collective market value of $8 trillion. PHOTO: Paula Prekopova on Unsplash.

Investment agreed for 220 MW battery storage project with 690 lithium-ion battery blocks.

RWE has given the green light for a 220-megawatt battery storage system in North Rhine-Westphalia in Germany as it continues to expand its battery storage technology business.

The company has finalised its investment decision for the 220 MW battery storage project where a total of 690 lithium-ion batteries blocks are set to be installed at the sites of RWE’s power plants in Neurath and Hamm in North Rhine-Westphalia. The total investment amounts to approximately €140m and subject to the pending building permit, construction is scheduled to start in 2023 with commissioning planned for 2024.

The new system is designed to react within seconds, delivering the required output for over an hour. This allows the system to contribute to the efficient stabilisation of the grid with a reliable power supply.

The unique feature of the system is that the new battery is networked virtually with RWE’s German power plants. This enables optimal management in terms of which unit efficiently provides balancing energy, either individually or as a group, and when.

RWE leverages its energy storage technical capabilities by providing detailed project design, modelling, system integration and commissioning. Roger Miesen, CEO of RWE Generation said: “This investment decision paves the way for a future-looking project that will set new standards in terms of size as well as intelligent networking. Our new battery storage system will optimise the utilisation of our German power plant fleet and in tandem they will provide balancing energy.”

RWE Power board member Lars Kulik added: “Against the backdrop of structural change, this group-wide joint project will enable traditional power plant sites to contribute to the energy supply of the future once they have been fitted with state-of-the-art storage technology and innovative networking systems.”

RWE plans to implement the storage project at existing power plants to maximise the synergy effects across technologies. The batteries can be installed in the areas that are already available, utilising existing grid infrastructure to feed energy in and out.

In Neurath, batteries with a total capacity of 80 MW are to be installed on an area of around 7,000 m², which is the equivalent of about one football pitch. And batteries with a total capacity of 140 MW are to be installed in Hamm at the Westfalen power plant, covering an area of 14,000 m². The company plans to use brand new lithium-ion batteries which are installed in cabinet form and delivered as prefabricated modules.