UK’s Largest Battery Project Secures £750 Million Financing

The United Kingdom is advancing its renewable energy transition with the world's largest battery energy storage system, the 1.4GW Thorpe Marsh project in South Yorkshire, set to begin construction immediately after securing about £750 million ($1 billion) in public and private financing. Developed by Edinburgh-based Fidra Energy, with investment from the National Wealth Fund and EIG, the facility aims to supply power to approximately 785,000 homes and is expected to be operational by mid-2027. The project has signed long-term offtake agreements covering around 80% of its capacity with major energy companies including Electricite de France, Octopus Energy, and Statkraft. The Thorpe Marsh battery system will significantly enhance the UK’s energy storage capabilities amid growing wind and solar capacity, helping reduce reliance on gas generators and supporting the country’s 2030 climate goals. Key partners include Sungrow for battery technology, H&MV Engineering for grid connection and system design, and Jones Bros. for civil works. UK Energy Secretary Ed Miliband highlighted the project's contribution to Britain's energy security, and Chancellor Rachel Reeves emphasized its role in economic growth and investment confidence.