Engineering and technology solutions provider Amentum has been appointed as the sole programme and project management partner for the Sizewell C nuclear power station on the East Suffolk coast of England.
Sizewell C will feature two 1.6GW European pressurised reactors (EPRs).
Sizewell C Ltd, primarily owned by the UK government with a 76% interest, is developing the project.
Amentum will support Sizewell C Ltd with project controls, engineering services and infrastructure solutions for site management. The contract will remain in effect until the station begins electricity generation.
Amentum energy and environment international senior vice-president Andy White stated: “Sizewell C’s always-on nuclear electricity will boost UK energy security at a time of volatile global gas prices, leading to lower and more predictable energy costs.
“Our international programme management experience and the learning from our work at Hinkley Point C will help to advance a project which is crucial for job creation and economic growth across the country.”
The Sizewell C project is expected to supply electricity to six million homes and reduce carbon emissions by approximately nine million tonnes (mt) annually. It is expected to bolster the UK’s energy security.
The UK government has made a $3.2bn investment pledge for the power plant’s development.
The project is set to support 70,000 jobs across more than 3,000 companies within the UK's nuclear and construction sectors.
Sizewell C joint managing director Nigel Cann said: “Amentum’s global programme management capabilities and international nuclear new build experience will help us deliver the game-changing benefits and cost savings of replicating Hinkley Point C’s reactor design, while supporting our commitment to creating jobs and skills in the UK and maintaining the national capability essential for the nuclear renaissance.”
In January 2025, the projected cost for Sizewell C was reported to be almost £40bn ($48.7bn), a substantial increase from the initial £20bn estimate.
The revised cost estimate has sparked concerns about the UK's nuclear power strategy amid fiscal challenges and cost of living pressures.
