EDF signals £1.1-billion boost for UK’s Sizewell C nuclear plant

SIZEWELL, July 8, 2025 – EDF has signalled its intent to inject up to GBP 1.1 billion into the UK’s Sizewell C nuclear project, securing a 12.5% stake in the multi-billion-pound development, the company said on Tuesday.

Located on the Suffolk coast, the Sizewell C plant will feature two EPR reactors with a combined capacity of 3.2 GW, mirroring the design of Hinkley Point C. It is expected to provide low-carbon electricity to around six million homes.

The project is currently majority-owned by the UK government, which holds a 50% stake, with the remainder being prepared for private investment. EDF’s planned 12.5% share would make it a key minority investor alongside potential new backers including Brookfield and Centrica.

The investment would support the construction of two European EPR reactors at the existing Sizewell site, replicating the design of the units underway at Hinkley Point C. The project aims to strengthen the UK’s long-term low-carbon power supply and build on industry expertise, feeding into EDF’s broader EPR2 programme in France.

The FID will follow once negotiations with the UK government and other stakeholders are concluded. The UK currently holds a majority stake after investing GBP 14.2 billion. Canadian firm Brookfield Corporation is in talks to take over 20%, potentially becoming the largest private investor, while Centrica is considering a 15% share.

Once operational in the mid-2030s, Sizewell C is expected to power around six million homes and support the UK’s 2050 net zero emissions goal.

EDF is a global energy group headquartered in France, specialising in electricity generation and distribution. It is a leading force in nuclear energy and a major developer of low-carbon infrastructure worldwide.