While preliminary works have been going on in Suffolk for the new 拢38bn nuclear power station at Sizewell, reaching financial close sees funding for the project now beginning to flow.
Completion is exepcted in 2035-36.
Following the conclusion of the equity raise and Sizewell C鈥檚 final investment decision from government in July 2025, the company has confirmed the 拢5bn of debt raised through an export credit facility from BpifranceAE (France鈥檚 state investment bank) as well as a 拢500m working capital facility, both sitting alongside a loan from the UK鈥檚 National Wealth Fund.
Thirteen banks have supported the 拢5bn debt raise and a subset of these are providing the working capital facility.
Sizewell C is the first nuclear power project to be financed using the regulated asset base (RAB) model, as used for Heathrow Terminal 5 and the Thames Tideway Tunnel project in London.
Investors behind Sizewell C include the UK government, La Caisse, Centrica, EDF and funds advised or managed by Amber Infrastructure Group, including International Public Partnerships and the Nuclear Liabilities Fund.
Sizewell C鈥檚 joint managing directors Julia Pyke and Nigel Cann said: 鈥淪izewell C is a transformative project for Britain鈥檚 energy future, delivering reliable low-carbon power, tens of thousands of jobs, and a major boost to the UK economy.
鈥淚n Sizewell C, the UK has pioneered a model for financing new build nuclear which works for both consumers and private investors and has attracted considerable interest from other countries with nuclear power development plans.鈥�
Centrica, parent company of British Gas, has a 15% stake in the project. It has made an initial investment of 拢376m 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. It now expects to make a cumulative investment of 拢500m to 拢600m into Sizewell C by the end of 2028 as part of its capped 拢1.3bn investment.
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