Eon and Quinbrook Infrastructure Partners are jointly investing in the construction of a large-scale battery storage project in the UK.
Two storage facilities, each with a capacity of 230 megawatt-hours and an output of 115MW, will be built on the site of a former coal-fired power station in Uskmouth, south Wales.
Under the agreement announced today, Eon is acquiring one of the two storage units under construction, which is 50% of the project’s future storage capacity.
It is the first battery of this size acquired by Eon.
The storage facility will provide balancing energy from the first quarter of 2025 and will also be used in the wholesale market.
“Eon shares our commitment to sustainable development goals and recognises the meaningful impact that large scale regeneration projects like Uskmouth, a former coal power station stockyard, can make to the delivery of the Government’s Levelling Up ambitions,” said managing director and UK regional lead for Quinbrook Keith Gains.
Eon Energy Markets chief executive Nadia Jakobi said: “Quinbrook sees the energy transition as an opportunity for sustainable development and growth and hence is an ideal partner for us.”
Following the start of construction in November 2023, Quinbrook and Eon will continue to jointly develop and construct the project.
The partners will be relying in particular on the involvement of local contractors and specialists.
The project will also use 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, the developers said.
The project supported approximately 130 jobs in the region in 2023 and is expected to create another 140 jobs in 2024.


