Hinkley Point C & Sizewell C: Delivering Decarbonised Energy to Millions of Homes in the United Kingdom

General View of HPC, the Nuclear Island

General View of HPC, the Nuclear Island © EDF Energy

With the construction of these four EPR reactors (two units at each site), Framatome is supporting its customers in delivering low-carbon and energy-sovereign power in the United Kingdom.

On these two major industrial projects, Framatome is responsible for:

  • The execution of nuclear island activities, from design and manufacturing through to installation and commissioning.
  • The execution and supply of the plant’s safety and emergency instrumentation and control (I&C) systems.
  • Engineering and procurement of external supplies, including specific equipment, machinery and valves related to the pressurizer.
  • The supply of fuel, as well as components and equipment required for fuel operation.
  • In addition, other more specific contracts: conventional instrumentation, LTSA (Long Term Support Agreement), ultimate emergency diesel generators, and thermal stress-relief heat treatment.

These projects are carried out for two distinct customers: NNB Generation Company (HPC) Ltd (*) for Hinkley Point C, and Sizewell C Ltd (**) for Sizewell C. This setup illustrates Framatome’s ability to support multiple project owners in the United Kingdom, while leveraging experience gained to deliver reliable and competitive solutions at each site.

(*) NNB is the entity created by EDF Energy, EDF’s UK subsidiary, for the Hinkley Point project, in partnership with the Chinese nuclear group CGNC (China General Nuclear Corporation).
(**) Sizewell C Ltd is the project company established to deliver the SZC project, in which the UK government holds a 45% stake, alongside EDF (12.5%) and other institutional investors.

News from Hinkley Point C

Framatome signs an agreement with NNB for post weld heat treatments on the welds of the main secondary coolant systems of Hinkley Point C

News from Sizewell C

Framatome has signed contracts worth multi-billion euros for Sizewell C in the UK

Key milestones for projects Hinkley Point C and Sizewell C

Hinkley Point C

July 2016
Final Investment Decision (FID) by EDF’s Board

November 2017
Start of Reactor Pressure Vessel manufacturing at Saint-Marcel

December 2022
Completion of manufacturing of Unit 1 reactor pressure vessel at Saint-Marcel

December 2024
Installation of the reactor pressure vessel in the first reactor building

March 2025
Start of primary circuit welding for Unit 1

October 2025
Installation of the last steam generator in the first reactor building

Hinkley Point C website
Arrival of the unit 1 steam generators at Hinkley Point C

Arrival of the unit 1 steam generators at Hinkley Point C ©EDF Energy

Fabrication of primary circuit piping for Sizewell C

Fabrication of primary circuit piping for Sizewell C ©Framatome

Introduction of the unit 1 reactor vessel of Hinkley Point C

Introduction of the unit 1 reactor vessel of Hinkley Point C ©EDF Energy

Introduction of the unit 1 steam generators of the Hinkley Point C

Introduction of the unit 1 steam generators of the Hinkley Point C ©EDF Energy