Sizewell C nuclear power station
| Sizewell C nuclear power station (SZC) | |
|---|---|
3D Image of how Sizewell C (middle) will appear in relation to Sizewell B (top right) | |
| Country | England |
| Location | Suffolk |
| Coordinates | 52°13′09″N 1°37′13″E / 52.2193°N 1.6203°E |
| Status | Awaiting final investment decision, preliminary works underway |
| Construction began | 2023 (site preparation) |
| Construction cost | £20–35 billion |
| Owners | UK Government (83.5%), EDF Energy (16.5%) |
| Operator | NNB Generation Company |
| Nuclear power station | |
| Reactor type | PWR |
| Reactor supplier | Framatome |
| Cooling source | Sea water from North Sea |
| Thermal capacity | 2 × 4,524 MWth (planned) |
| Power generation | |
| Make and model | EPR |
| Units planned | 2 × 1,630 MWe |
| Nameplate capacity | 3,260 MWe (planned) |
| External links | |
| Website | www |
The Sizewell C nuclear power station is a project to construct a 3,200 MWe nuclear power station with two EPR reactors near the village of Sizewell in Suffolk, England. The project was proposed by a consortium of EDF Energy and China General Nuclear Power Group, who at the time owned 80% and 20% of the project respectively.
In 2022, the UK Government announced a buy-out to allow for the exit of CGN from the project and forming a 50% stake with EDF, though EDF expect this to fall below 20% following anticipated external investment. As of 30 November 2024, the project is 83.5% owned by the UK Government (specifically the Secretary of State for Energy Security and Net Zero) and 16.5% owned by EDF. The power station is expected to meet up to 7% of the UK's electricity demand.
The project commenced in 2024, with construction taking between nine and twelve years, depending on developments at the Hinkley Point C nuclear power station, which is also being developed by EDF Energy and which shares major similarities with the Sizewell plant. The reactors are expected to have a service lifetime of 60 years.
On 10 June 2025, the government announced that Sizewell C had been allocated government capital investment of £14.2 billion. The project is still awaiting the Final Investment Decision when the financial deal with incoming private investors for the remaining capital investment is made.