EDF has signed an agreement with Fidra Energy to manage and optimise two battery storage units at the Thorpe Marsh project in Yorkshire.
The partnership will see EDF provide route-to-market services for the assets, which will have a combined capacity of 560MW.
Thorpe Marsh is planned to be the UK’s largest battery storage site, and among the biggest in Europe, with an overall capacity of 1.4GW (2.9GWh).
Developed by Fidra Energy on the site of a former coal power station, the project sits next to a major National Grid substation.
Once operational, it is expected to store renewable energy from wind and solar, supplying up to 785,000 homes at peak times and helping to balance the electricity network.
The two batteries covered by the deal are scheduled to come online in 2027. EDF will use its in-house Powershift platform to optimise their operation and ensure they provide value across energy markets, as well as fast-response support to the National Electricity System Operator (NESO).
Fidra Energy, launched by investment firm EIG in 2024, has rapidly expanded its presence in the UK energy sector.
EDF and EIG have previously worked together on route-to-market services for the West Burton B gas-fired power station.
Stuart Fenner, Wholesale Market Services, Commercial Director at EDF, said: “Battery storage is vital for a flexible and reliable electricity system. Thorpe Marsh will help the UK make better use of renewable energy and reduce reliance on fossil fuels.
Our Powershift platform is designed to unlock the full value of battery assets while supporting the stability of the grid. Working with Fidra on a project of this scale shows what can be achieved when industry leaders join forces.”
Chris Elder, Fidra Energy’s CEO, said: “Thorpe Marsh is a landmark project for Fidra and for the UK energy system. Transforming a former coal site into the country’s largest battery shows how the energy transition can deliver real change.
“With EDF’s expertise, we can ensure these batteries provide maximum value for the grid, for consumers and for the UK’s net zero goals.”
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