Executive Summary
- EDF has signed two BESS project agreements with Trinasolar covering a combined 179.8 MWh of storage capacity in England and Scotland
- The projects are for sites near Aberdeen and in Gloucestershire, expected to be operational in October 2026 and March 2027 respectively
- EDF’s Powershift platform will provide long-term revenue certainty for Trinasolar while enabling the projects to deliver essential flexibility services to the UK electricity system
EDF has signed two battery optimisation agreements with Trinasolar IBSU, covering a combined 179.8 MWh of storage capacity across England and Scotland.
The agreements cover two projects; the 40 MW / 80 MWh Ruby battery energy storage system (BESS) near Aberdeen, which is expected to become operational in October, and the Chatterley BESS project in Gloucestershire. The latter is a 49.9MW / 99.8 MWh asset expected to reach commercial operation in March 2027.
Both projects are designed with two hours of storage duration, and aim to meet peak electricity needs of tens of thousands of homes. The projects will also provide flexible capacity to support local and national grid requirements.
The key in managing the assets will be EDF’s Powershift platform. The platform combines AI, real-time data analytics, and sophisticated algorithms with EDF’s own expertise to ‘ensure precision optimisation of flexible assets’, in the company’s own words.
The system will provide long-term revenue certainty for Trinasolar while enabling the projects to deliver essential flexibility services to the UK electricity system, EDF added.
“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,” said Stuart Fenner, commercial director of business and wholesale services at EDF.
“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,” said Leonardo Lotti of Trinasolar. “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.”
