Sizewell C is a planned large-scale nuclear power station on the Suffolk coast. Funded by the government in partnership with the energy provider EDF, as well as private finance, the project is projected to cost £40.5bn to £47.7bn. When constructed, it will have a generating capacity of 3.2GW, meaning it will be able to generate around 7% of the UK’s current electricity demand.
The Public Accounts Committee (PAC) previously reported on the government's deal with EDF to construct a nuclear power station at Hinkley Point, the site with Sizewell C will be based on. The PAC were concerned that that government's negotiations were not championing the interests of consumers, who might be locked into an expensive deal for decades, and warned that the poorest would likely be the hardest hit. In its response, the Government accepted all of the PAC’s recommendations and stated the actions it planned to take in response.
The National Audit Office (NAO) will publish its report on Sizewell C in spring 2026. Following the NAO’s investigation, which is likely to examine the government’s current spend, as well as the potential risks to achieving value for taxpayer’s money, the PAC will hear from senior officials at the Department for Energy Security and Net Zero and Sizewell C on the reports key findings.
If you have evidence on these issues, please send it to us using the link below by 23.59 on Monday 18 May 2026.
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