Amentum is the delivery partner for programme, project and construction management services at Hinkley Point C; sole programme and project management delivery partner at Sizewell C; and also supports the UK’s existing nuclear power stations under a Lifetime Enterprise Agreement with EDF. It is a major supplier of engineering design, safety case and project management at Sellafield and other UK nuclear decommissioning sites and operates the country’s largest private sector complex of nuclear laboratories and engineering test facilities in Warrington.
The newly awarded contracts comprise: ten-year Professional Services Agreement frameworks with Hinkley Point C, EDF Nuclear Operations and EDF Nuclear Services to support the Hinkley Point C new build programme, operating stations and their engineering capability hub; and a five-year Project Management Resources framework to support station operations, life extension and preparation for decommissioning.
“Amentum’s expertise in gigawatt reactor operational support and life extension makes it the ideal partner for EDF, one of the world’s largest nuclear utilities,” said Loren Jones, senior vice president and head of Amentum’s Energy & Environment-International business. “This award advances our strategy to accelerate the growth of our nuclear energy business in line with the opportunities being created by the worldwide nuclear resurgence. Amentum will deploy the skills and experience of more than 1,000 UK-based specialists to provide the full breadth of nuclear skills, solutions, and products essential to the continued operation and life extension of the UK’s existing nuclear fleet.”
Jones added: “A further 300 Amentum colleagues are already delivering multi-disciplinary roles across Hinkley Point C under the Professional Services Agreement. We expect this number to grow as these new contracts mature, strengthening our position to support long-term operations once the reactors come online.”
Mark Whitney, president of Amentum’s Energy & Environment business, added: “These new contracts build on Amentum’s differentiated position as a lead strategic partner to EDF and advance an immensely productive business relationship that dates back many decades.”
In March 2025, Amentum was selected as sole programme and project management delivery partner for the planned Sizewell C nuclear power plant in the UK. As well as programme and project management, Amentum will support delivery teams from Sizewell C Ltd with digitally aligned project controls, engineering and technical services, and innovative infrastructure solutions for site management. The contract duration is until the plant begins generating electricity.
