Completion of investment in Sizewell C

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Centrica plc is pleased to announce the completion of its acquisition of a 15% equity stake in Sizewell C¹ following financial close and revenue commencement which occurred earlier today.

As part of completion, Centrica plc has made an initial investment of £376 million into Sizewell C, which includes funding of the regulated asset base value built up prior to financial close and pre-funding a portion of 2026 construction costs. We now expect to make a cumulative investment of £500 - 600 million into Sizewell C through to the end of 2028 as part of our capped £1.3 billion investment.

Chris O'Shea, Group Chief Executive, Centrica plc, said: "Today is a significant milestone for the UK, and I'm thrilled that Centrica is joining forces with exceptional partners to drive this critical project forward. Sizewell C will be at the heart of Britain's energy future - delivering reliable, affordable, zero-carbon power that fuels economic growth for decades to come. This investment goes far beyond building a new power station; it's a huge commitment to Britain's energy security, our journey to net zero, and the creation of thousands of high-quality jobs nationwide.

"Centrica's investment in the backbone of the UK's energy system, from Sizewell C, to Grain LNG, to our partnership with X-energy, is securing the energy Britain needs today and powering the ambitions of tomorrow. We stand ready to continue to invest if we see a supportive regulatory framework."