EDF has signed two battery optimisation agreements with Trinasolar International Solution Business Unit (ISBU), covering a portfolio of new grid scale battery energy storage projects located in England and Scotland.
Under the agreements, EDF will use its advanced Powershift platform to manage the assets. This digital trading and optimisation system will provide long-term revenue certainty for Trinasolar ISBU while enabling the projects to deliver essential flexibility services to the UK electricity system.
The agreements cover two battery projects: the Ruby BESS project near Aberdeen, a 40 MW/80 MWh facility scheduled to become operational in October 2026 and the Chatterley BESS project in Gloucestershire, a 49.9 MW/99.8 MWh asset expected to reach commercial operation in March 2027. Both projects are designed with two hours of storage duration and will provide flexible capacity to support local and national grid requirements.
By storing electricity during periods of lower demand and releasing it when demand is higher, the Chatterley and Ruby projects will support grid stability, help manage price volatility, and enable greater integration of low-carbon electricity. Long-term optimisation agreements such as these also help provide the revenue certainty needed to support continued investment in flexible energy infrastructure across Great Britain.
Stuart Fenner, Commercial Director of Business & Wholesale Services at EDF, said: “As renewable generation and electrification continue to grow, flexible assets such as battery storage are becoming increasingly important to maintaining system stability. We’re pleased to be working with Trinasolar ISBU to optimise both projects and help unlock the flexibility needed to support Britain’s transition to a low carbon, electrified energy system.”
Leonardo Lotti, Trinasolar ISBU, added: “Following our acquisition of the Ruby and Chatterley projects, we are proud to be partnering with EDF as an important next step in maximising their long term value. Through this collaboration, we can invest with confidence while ensuring the projects are operated effectively to deliver strong commercial outcomes and meaningful benefits for the wider energy system.”
The Ruby and Chatterley projects form part of EDF’s growing battery storage portfolio in Great Britain, reflecting the increasing role of energy storage in delivering a secure, flexible, and low-carbon electricity system.
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