Deliver reliable, low-carbon base-load electricity while demonstrating large EPR deployment and public-private partnership model for UK nuclear.
Financial close November 2025. 2,000+ workers on site January 2026. Mid-to-late 2030s operation.
Updated Feb 2026Checked 11 Oct0 updates this week
Water at 155 bar circulates through core, absorbing fission heat without boiling.
Hot primary coolant transfers heat via steam generators, boiling secondary water for turbines.
Double containment, passive safety cooling and redundant systems prevent core damage in accidents.
Off-site fabricated components like reactor vessels transport to Suffolk for local assembly.
| Spec | Sizewell C |
|---|---|
| Power per unit | 1,600 MWR (reported) |
| Total output | 3,200 MWR (reported) |
| Reactor type | EPRR (reported) |
| Equivalent homes | 6 millionR (reported) |
| Design lifetime | 60+ yearsR (reported) |
| Project cost | £38 billionR (reported) |
| Workers on site | 2,000+R (reported) |
R reported by the company
Sizewell C Ltd
Twin EPR, 3,200 MW, UK nuclear, PPP
Special-purpose company developing twin EPR nuclear power station in Suffolk, UK. Financial close November 2025 with £38 billion funding. Owned by UK government (44.9%), La Caisse (20%), Centrica, EDF, Amber Infrastructure.
