Project · Nuclear · United Kingdom

Sizewell C nuclear power station

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.

Checked by hand against the sources below (2026-10-20).

  1. Engineering (done)
  2. Fabrication (done)
  3. Construction (now)
  4. Hook-up
  5. Commissioning (next)
  6. Operation

Now Construction (reported: construction (early civil works — site infrastructure, road/rail bridges, piling — as of the 2026 construction updates))

Next Commissioning · not announced

Roles Commissioning & start-up · QA/QC & HSE · Project management & controls · Role groups per phase: our planning assumption from the Crew Forecast model.

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Their rate stays; our fee goes on top: 20% → 15% → 12%. Open book →

Who works on it as the sources name them

  • EDFEngineering & designminority owner, reactor technology/design (EPR), delivery partner
  • UK GovernmentOther roleco-investors following financial close
  • La CaisseOther roleco-investors following financial close
  • CentricaOther roleco-investors following financial close
  • Amber InfrastructureOther roleco-investors following financial close
Kind
Nuclear
Country
United Kingdom
Size
2 x EPR reactors, ~3.2 GW total; projected to supply up to 7% of UK electricity demand
Operator
Sizewell C Ltd
Position
52.21°N 1.62°E, approximate

Sources

  1. UK's Sizewell C achieves financing landmarkWorld Nuclear News · published 2025-07 · read 2026-09-19
  2. Sizewell C nuclear power stationEDF Energy (company project page) · published 2026 · read 2026-09-19
  3. Sizewell C Construction Update March 2026Aldeburgh Town Council (local authority update, citing Sizewell C Ltd) · published 2026-04 · read 2026-09-19
  4. In pictures: Freight trains deliver construction materials to Sizewell C for first timeNew Civil Engineer · published 2026-09-14 · read 2026-10-08
  5. Sizewell C reaches Financial Close, with £5 Billion export credit backed debt raise and strong investment grade credit ratingSizewell C · published 2025-11-04 · read 2026-10-20
  6. Building Sizewell CSizewell C · read 2026-10-20
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