Holtec and EDF submit plans for 1.3 GW nuclear project in UK
Holtec International and EDF submitted a joint proposal to the UK Government to deploy SMR-300 small modular reactors at Cottam, Nottinghamshire, targeting 1.3 GW of capacity. The companies signed Heads of Terms for a joint venture, leveraging the UK's Advanced Nuclear Framework and existing grid infrastructure. The project follows the successful Generic Design Assessment of the SMR-300 and aims to revitalize the region.
*this image is generated using AI for illustrative purposes only.
Holtec International and EDF have submitted a joint proposal to the UK Government for the deployment of Holtec’s SMR-300 small modular reactors at Cottam in Nottinghamshire. The project targets the installation of up to four units, representing approximately 1.3 gigawatts of clean, reliable generating capacity. This initiative aims to repurpose the former coal power station site, utilizing existing grid infrastructure to support the next generation of nuclear energy and revitalize the local economy.
The submission aligns with the UK’s Advanced Nuclear Framework, established to accelerate the deployment of advanced nuclear technologies and encourage private-sector participation. Holtec and EDF have also signed Heads of Terms to establish a joint venture to advance the project’s development. The partnership combines EDF’s operating and development experience with Holtec’s SMR-300 technology and manufacturing expertise.
Project Details and Strategic Alignment
The Cottam project leverages a market-led approach, relying on private investment and proven technology. By building on the historic Cottam site, the companies plan to transform the region’s coal heritage into a hub for advanced nuclear energy. The project follows Holtec’s recent completion of the United Kingdom’s Generic Design Assessment (GDA) process for the SMR-300, which confirmed the technology's fundamental safety, security, and environmental adequacy.
| Project Feature | Details |
|---|---|
| Location | Cottam, Nottinghamshire |
| Technology | SMR-300 small modular reactors |
| Capacity | Approximately 1.3 gigawatts |
| Number of Units | Up to four |
| Regulatory Framework | UK Advanced Nuclear Framework |
Corporate Expansion and Regulatory Progress
Holtec plans to significantly expand its presence in the UK, including a larger operation center and the evaluation of a manufacturing plant for nuclear equipment. The Cottam site is designated as a second-of-a-kind (SOAK) deployment, following the first-of-a-kind (FOAK) Pioneer units in Michigan, USA. Holtec’s construction permit application for the twin Pioneer units is currently under review by the U.S. Nuclear Regulatory Commission.
Cooperation between the UK’s Office for Nuclear Regulation and the U.S. Nuclear Regulatory Commission is expected to benefit both the Pioneer and Cottam projects. Dr. Rick Springman, President of Holtec International, highlighted the long-standing partnership with EDF and the UK’s regulatory framework as key drivers for the project’s advancement. Simone Rossi, CEO of EDF UK, emphasized the project's support for the UK government’s ambition to expand nuclear capacity.
What is the expected timeline for regulatory approval and construction commencement for the Cottam project?
How will the project's financing structure be balanced between private investment and potential UK government support?
What specific economic impacts and job creation numbers are projected for the local Nottinghamshire area?
18
Create Custom Screeners 
Access 200+ Pre-built Filters 
Use 50+ Readymade Screener 
