Sizewell C nuclear power station
United Kingdom
The UK's second EPR project, now financially closed and in early construction.
Size2 x EPR reactors, ~3.2 GW total; projected to supply up to 7% of UK electricity demand
- FID
- Engineering
- Fabrication
- Construction (named in the reported phase)
- Installation
- Commissioning
Phase, as reported: construction
…
Who builds it
- Sizewell C Ltd operator
- EDF
- UK Government / La Caisse / Centrica / Amber Infrastructure
4 sources checked on 2026-10-08
More why we watch it · key dates · all contractors · sources
Why we watch it
The UK's second EPR project, now financially closed and in early construction — a long, front-loaded civils and infrastructure phase now, with the bulk of mechanical/E&I/commissioning demand still ahead for 2027-2035.
Phase in full, as reported
construction (early civil works — site infrastructure, road/rail bridges, piling — as of the 2026 construction updates)
Who builds it as stated by the sources
Operator / developerSizewell C Ltd — EDF (12.5%), UK Government (44.9%), La Caisse (20%), Centrica (15%), Amber Infrastructure (7.6%)
- EDFminority owner, reactor technology/design (EPR), delivery partner
- UK Government / La Caisse / Centrica / Amber Infrastructureco-investors following financial close
Key dates as stated by the sources
- Construction start
- 15 January 2024
- FID financial close
- 22 July 2025
- Construction duration
- Projected 9-12 years
Disciplines likely needed our inference
- civil/structural engineering
- construction management
- planning/project controls
- E&I (later phase)
- commissioning (later phase)
Derived by us from project kind and phase - not stated by the sources below.
Sources checked on 2026-10-08
- UK's Sizewell C achieves financing landmarkWorld Nuclear News · 2025-07
- Sizewell C nuclear power stationEDF Energy (company project page) · 2026
- Sizewell C Construction Update March 2026Aldeburgh Town Council (local authority update, citing Sizewell C Ltd) · 2026-04
- In pictures: Freight trains deliver construction materials to Sizewell C for first timeNew Civil Engineer · 2026-09-14
Position on the globe: 52.21°N 1.62°E. Location approximate: Suffolk, England.
This project on its own page - facts, sources and a summary to share.