EDF has signed Battery Energy Storage System (BESS) optimization and Contract for Difference (CfD) Power Purchase Agreements with Verdant Energy for two co-located solar and battery sites at Walpole and Cowley. EDF Wholesale Market Services will offtake the solar power, trade, and optimize the battery systems from both locations. The agreements mark a significant step in strengthening and expanding the existing partnership between EDF and CVC DIF, Verdant Energy's owner, as they continue to collaborate on accelerating the UK's transition to low-carbon energy.

The deal reinforces EDF as Britain's largest buyer of renewable electricity, with the highest PPA market share under contract, according to Cornwall Insight's PPA Market Share Report from August 2025.

Expansion of EDF's Solar and Battery Portfolio

The new agreements support the expansion of EDF's solar and battery optimization portfolio through the two new co-located projects at Walpole and Cowley. These deals follow the successful signing of a 50MW co-located Floor BESS and Power Purchase Agreement for the Warley site in September 2023. The two new sites further reinforce EDF's leading position in the UK's renewable energy market, with a continued focus on maximizing value and efficiency through the co-location of battery storage and renewable generation.

Both the Walpole and Cowley projects serve as real-life examples of what is possible when innovation is used to address energy challenges and drive energy optimization in co-location.

Technology and Grid Integration

Each co-located site utilizes a battery energy storage system to store energy during periods of peak power generation and then export it back onto the grid when demand is high. The BESS will balance the intermittent energy production, maximizing the site's efficiency and enabling a greater output of low-carbon electricity. Having this flexibility of the grid is critical to supporting Britain's renewable energy transition and net-zero goals.

The systems are designed to address energy challenges through cutting-edge optimization strategies and co-location efficiencies.

Company Leadership and Market Position

Stuart Fenner, Director of Wholesale Market Service Commercial at EDF, expressed enthusiasm about the agreements, stating the company is thrilled to have signed agreements for two additional co-located solar and battery sites with Verdant Energy. He noted that the projects exemplify EDF's commitment to innovation and driving value for partners by leveraging cutting-edge optimization strategies and co-location efficiencies, while supporting the UK's goal of achieving a low-carbon, electric future.

EDF is Britain's largest generator of zero-carbon electricity and is helping the country achieve Net Zero by leading the transition to a cleaner, low-emission, electric future and tackling climate change. The company is the UK's largest producer of zero-carbon electricity, supplying millions of customers with electricity and gas. EDF generates low-carbon electricity from five nuclear power stations and more than thirty onshore wind farms and two offshore wind farms. Since 2009, EDF has invested almost GBP 8 billion in the nuclear fleet to improve reliability and extend station lifetimes.

The five generating stations currently supply about 14% of the UK's electricity demand. The company is leading the UK's nuclear renaissance with the construction of a new nuclear power station at Hinkley Point C. EDF also continues to support a replica plant at Sizewell C in Suffolk, which is now majority owned by the UK government. Hinkley Point C and Sizewell C will provide low-carbon electricity to meet 14% of UK demand and power around 12 million homes.

Renewable Energy Investment and Operations

EDF is one of the UK's largest investors in renewables, with more than 1.5 GW of renewable generation in operation and over 14 GW in construction, planning, and development across a range of technologies, including onshore and offshore wind, solar, and battery storage. The company is constructing its largest offshore wind farm in Britain – the 450 MW Neart na Gaoithe project in Scotland.

EDF is helping its customers, both in business and at home, take their first steps to sustainably powering their lives, whether it is buying an electric car, generating and storing electricity, selling energy back to the grid, or installing solar panels or a heat pump. EDF is one of the largest suppliers to British businesses and a leading provider of innovative energy solutions that help companies become more energy independent.

The company's energy services business, Dalkia, is one of the largest technical service providers in the UK and Ireland. EDF is part of EDF Group, the world's biggest electricity generator. In the UK, the company employs around 14,000 people at locations across England, Scotland, Wales, and Ireland.

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