E.ON buys into battery project at Uskmouth

E.ON and Quinbrook Infrastructure Partners are jointly investing in the construction of a large-scale battery project in Uskmouth, South Wales. Two facilities, each with a capacity of 230MWh and an output of 115MW, will be built on the site of a former coal-fired power station. Under the agreement, E.ON acquires one of the two storage units currently under construction. It is the first battery storage system of this size acquired by E.ON.

The storage facility will operate in the Balancing Market from the first quarter of 2025 and later in the wholesale market.
The project is part of a redevelopment of the Uskmouth site into a sustainable energy park. It project uses existing infrastructure of the former coal-fired power station, such as the grid connection, industrial water supplies and railway access. This will minimise local impacts from construction activities and reduce road traffic.
Nadia Jakobi, chief executive, E.ON Energy Markets, said “The energy transition is about more than climate protection. It’s about keeping energy prices affordable and creating security of supply while staying competitive. Flexible large-scale storage solutions play a key role in achieving this goal. This is where E.ON intends to invest in the future. We are pleased to take an important step in this direction with the project in Uskmouth. Further projects are planned in the UK, Germany and the
Quinbrook Infrastructure Partners focused on renewables, storage and grid support infrastructure in the US, UK and Australia.

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