UK battery energy storage platform Eelpower Energy has completed its fourth asset acquisition with the purchase of the 50 MW/100 MWh Stoneworthy battery energy storage project in Devon from renewable energy developer RES. Construction of the project is due to commence in 2027, with commercial operations expected to begin in 2028, with the site located on land south of the Pyworthy substation in Devon.

Renews.biz reported that the acquisition forms part of Eelpower Energy's plan to invest £500 million (approximately €596 million) in flexible BESS assets across Great Britain, supporting the UK's Clean Power 2030 goals by enabling a more flexible, resilient, and decarbonised electricity system.

Mark Simon, chief executive of Eelpower Energy, said Stoneworthy is an important acquisition and a strong addition to the company's growing battery storage portfolio, adding that the deal demonstrates its ability to originate and execute attractive opportunities with high-quality counterparties such as RES, while underlining the commitment of its investors to backing the infrastructure needed for a cleaner, more flexible, and more resilient electricity system in Great Britain.

Eelpower Energy was formed in September 2025 through a consortium led by international infrastructure investor Equitix, joined by Australian pension fund Aware Super and the UK's National Wealth Fund, a sovereign wealth fund whose sole shareholder is the UK Treasury. The National Wealth Fund has committed up to £200 million (approximately €238 million) to the platform, which is targeting 1 GW of new BESS capacity for the UK grid in the coming years.

See the full report on Eelpower Energy's acquisition of the Stoneworthy BESS project.