Sizewell C’s 3.2GW capacity will provide enough electricity for six million homes and create 10,000 jobs.
Sizewell C, with its 3.2GW capacity, is expected to generate electricity sufficient for six million households and create approximately 10,000 jobs. The plant’s design mirrors that of Hinkley Point C, though the latter has faced delays and higher-than-expected costs.
This funding adds to over a decade of financial support for Sizewell C, with total costs potentially exceeding £40 billion upon completion. The investment reflects the critical role of nuclear energy in the UK’s strategy to build a stable, sustainable energy supply, alongside growing offshore wind projects.
Rising costs and complex approval processes have posed challenges to replacing the UK’s ageing nuclear reactors. The latest £14.2 billion allocation brings the government’s total support for Sizewell C to £17.8 billion, according to Bloomberg. However, the project still awaits a final investment decision, which depends on securing private sector funding.
UK ministers are working to attract investors at the Anglo-French summit scheduled for July 2024 in London, as reported by the Financial Times. The government is also advancing plans to diversify its energy portfolio, with an upcoming announcement on a competition to support small modular reactor development. Companies such as a Rolls-Royce division and a GE Vernova-Hitachi partnership are among the participants.
In March 2025, Amentum, an engineering and technology solutions provider, was appointed as the exclusive programme and project management partner for Sizewell C. Chancellor Rachel Reeves included this investment in a wider spending review covering sectors like healthcare and defence, reinforcing the government’s commitment to sustainable energy.
