Sizewell C gets nearly $20B in big day for U.K. nuclear energy

June 11, 2025, 12:00PMNuclear News
Concept art of the planned Sizewell C plant on the Suffolk coast, featuring two French-designed EPRs. (Image: Sizewell C)

It’s a move that “brings to an end decades of dithering and delay, with the government backing the builders.” That’s how the U.K. government announced, with alliterative fanfare, its £14.2 billion (about $19.2 billion) investment in Sizewell C, where EDF Energy plans to build two 1,600-MWe EPRs.

U.K.’s own Rolls-Royce wins SMR competition

June 10, 2025, 3:00PMNuclear News
Concept art of Rolls-Royce SMR’s reactor design. (Image: Rolls Royce)

Rolls-Royce SMR has emerged as the United Kingdom’s preferred bidder to build the country’s first small modular reactors following a two-year competition, the U.K. government announced June 10. Rolls-Royce SMR expects to build three SMRs with Great British Energy–Nuclear, subject to contracting later this year and regulatory approvals. Great British Energy–Nuclear will “aim to allocate a site later this year and connect projects to the grid in the mid-2030s.”

U.K. community withdraws from disposal facility siting process

June 5, 2025, 12:00PMRadwaste Solutions

The community of Lincolnshire in eastern England voted on June 3 to withdraw from consideration to host a deep geologic repository for high-level radioactive waste. Lincolnshire was one of three communities the U.K. government’s Nuclear Waste Services identified in January as possible hosts for a repository.

Sellafield waste vault yields 1960s-era finds

May 2, 2025, 7:01AMRadwaste Solutions
A 1960s Electrolux vacuum cleaner was discovered in Sellafield’s Pile Fuel Cladding Silo. (Photo: Sellafield Ltd.)

A 1960s Electrolux vacuum cleaner was among the more unusual items workers removed from one of the world’s oldest nuclear waste stores at the United Kingdom’s Sellafield nuclear site.

TerraPower begins U.K. regulatory approval process

April 18, 2025, 9:28AMNuclear News

Seattle-based TerraPower signaled its interest this week in building its Natrium small modular reactor in the United Kingdom, the company announced.

TerraPower sent a letter to the U.K.’s Department for Energy Security and Net Zero, formally establishing its intention to enter the U.K. generic design assessment (GDA) process. This is TerraPower’s first step in deployment of its Natrium technology—a 345-MW sodium fast reactor coupled with a molten salt energy storage unit—on the international stage.

How can we shape the global nuclear future?

March 20, 2025, 9:30AMNuclear NewsFiona Rayment

Fiona Rayment

Shaping the global nuclear future requires an understanding of nuclear’s role in addressing national and energy security endeavors together with foresight into the energy sector’s future needs. Nuclear typically produces reliable baseload electricity, but it could also play an important role in economically viable cogeneration. In addition, future electricity demand will require significant enhancements to baseload generation. Addressing these challenges requires a combination of innovation, collaboration, capacity enhancements, and focused strategic investments.

Nuclear is increasingly recognized as essential to enabling energy security and achieving net-zero emissions. The United Kingdom has demonstrated leadership in this area, with initiatives such as the Young Generation Network’s global #NetZeroNeedsNuclear campaign at COP26 in Glasgow, Scotland. Efforts like these are impossible without international collaboration.

Robotics milestone reached at Sellafield

March 19, 2025, 12:00PMNuclear News
Spot, the robot dog, on-site at Sellafield. (Photo: AtkinsRéalis)

Sellafield Ltd. and AtkinsRéalis have successfully operated a robotic dog from a remote location in what might be the first time such an operation has happened at a nuclear licensed site, according to the companies in a March 18 press release.

U.K. narrows focus of disposal facility to three potential sites

February 3, 2025, 9:30AMRadwaste Solutions
A rendering of a possible geologic disposal facility on the coast of northwest England. (Image: NWS)

The U.K. government’s Nuclear Waste Services said it has identified three “areas of focus” in its search to find a suitable site and a willing community to host a geologic disposal facility (GDF) for the country’s most hazardous radioactive waste. The areas are within three communities currently involved in the siting process—Mid Copeland and South Copeland in Cumbria, and East Lincolnshire, England.

Tokamak Energy teams up with the U.S. and U.K. for $52M fusion project

December 10, 2024, 7:01AMNuclear News
Tokamak Energy’s ST40. (Photo: Tokamak Energy)

Tokamak Energy’s ST40 experimental fusion facility will receive a $52 million upgrade under a joint public-private effort with the U.S. Department of Energy and the U.K. Department of Energy Security and Net Zero (DESNZ) aimed at advancing the fusion science and technology needed to deliver a future pilot plant.

UKIFS takes reins of the U.K.’s STEP fusion program

November 6, 2024, 7:01AMNuclear News
Chapman (left) and Methven at the West Burton power station. (Photo: UKIFS)

Leadership of the United Kingdom’s STEP (Spherical Tokamak for Energy Production) fusion program has transitioned to U.K. Industrial Fusion Solutions Ltd. (UKIFS), a wholly owned subsidiary of the U.K. Atomic Energy Authority (UKAEA). UKIFS was established in February 2023 to lead a public-private partnership that will design, build, and operate the STEP prototype fusion energy plant in Nottinghamshire in England’s East Midlands region.

Sellafield not “achieving value for money,” according to U.K. watchdog

October 25, 2024, 12:00PMRadwaste Solutions
The Sellafield nuclear site in Cumbria, England. (Photo: NEA/OECD)

Despite progress made over the past years, the United Kingdom’s Nuclear Decommissioning Authority (NDA) has not seen an adequate return on investment in cleaning up the Sellafield nuclear site on England’s Cumbria coast, according to a new report by the U.K.’s National Audit Office, which scrutinizes government spending.

UK awards £30 million to advance decommissioning R&D

August 21, 2024, 9:31AMRadwaste Solutions
The Sellafield nuclear site in Cumbria, England. (Photo: Simon Ledingham)

The Nuclear Decommissioning Authority (NDA), the government agency charged with cleaning up the United Kingdom’s nuclear sites, has awarded three contracts totaling £30 million (about $39 million) for research into new decommissioning techniques.

The U.S. and U.K. are both investing in HALEU. How do the programs compare?

August 1, 2024, 9:30AMNuclear News
Urenco’s Capenhurst enrichment site in the U.K. (Photo: Urenco)

A plan to build up a high-assay low-enriched uranium fuel cycle in the United Kingdom to support the deployment of advanced reactors is still in place after the Labour party was voted to power on July 4, bringing 14 years of conservative government to an end. A competitive solicitation for grant funding to build a commercial-scale HALEU deconversion facility opened days before the election, and the support of the new government was confirmed by a set of updates on July 19. But what does the U.K. HALEU program entail, and how does it differ from the U.S. HALEU Availability Program?

U.K., Japan step up progress toward fusion power demonstrations

July 30, 2024, 9:30AMNuclear News
A screengrab from a video released by the STEP program on July 23 illustrating the future home of the prototype fusion power plant. (Image: UKAEA/STEP)

Japan’s recent moves to boost fusion power in the nation’s energy plan and accelerate the timeline for a prototype fusion power plant come in response to increased global attention on fusion energy. Even as ITER faces delays, more than 40 private fusion developers are pursuing different technologies and competing for attention. And so are other countries, including the United Kingdom, which announced its plans for a fusion pilot plant back in 2019. Fusion companies and nations alike are responding to a growing sense that there is a race—or at least collective momentum—to commercialize fusion energy.

Fuel cycle players signal next moves as Russian uranium ban becomes law

May 16, 2024, 7:02AMNuclear News
Uranium yellowcake is used in the preparation of uranium fuel that is used in nuclear reactors. (Photo: DOE)

On May 13, President Biden signed the Prohibiting Russian Uranium Imports Act, unlocking the $2.72 billion that Congress conditionally appropriated in March to increase production of low-enriched uranium (LEU) and high-assay low-enriched uranium (HALEU).

Urenco awarded $245M to build U.K. HALEU facility

May 10, 2024, 7:01AMNuclear News
The Capenhurst site in Cheshire, England. (Photo: Urenco)

The U.K. government this week announced a $245 million (£196 million) award to help Urenco build Europe’s first advanced reactor fuel manufacturing plant, which will be located in northwest England at the company’s Capenhurst site. Urenco, which is part-owned by the U.K. government, will cofund the project.

U.K. nuclear funding awarded to X-energy, Cavendish

April 5, 2024, 9:30AMNuclear News

X-energy UK Holdings and Cavendish Nuclear together received a government award of £3.34 million ($4.23 million) for further development of advanced modular reactors. The award, which was announced earlier this week, is from the U.K. government’s Future Nuclear Enabling Fund.

Electron-Ion Collider coming to Brookhaven gets substantial U.K. investment

April 1, 2024, 7:00AMNuclear News
John Hill, deputy director for science and technology at BNL, with Ruqaiyah Patel, deputy director of UKRI North America, at a recent reception held by UKRI's North America office to mark the funding of the EIC. (Photo: BNL)

The U.S. Department of Energy is constructing the Electron-Ion Collider (EIC) at Brookhaven National Laboratory to explore the boundaries of nuclear physics—both for the sake of science and to support diverse applications, including in nuclear medicine, radiation safety, and nuclear energy. The project, already supported by international collaborators in 40 countries, just secured a significant commitment from the United Kingdom.

U.K. LLW project completed ahead of schedule

March 14, 2024, 3:03PMRadwaste Solutions
Waste drums at the Winfrith site's treated radwaste storage facility. (Photo: NWS)

More than 1,000 drums of low-level radioactive waste in the United Kingdom have been safely disposed of earlier than expected. The project was completed through the collaborative work of Nuclear Waste Services (NWS), Nuclear Restoration Services (NRS), and Nuclear Transport Solutions (NTS).

U.K. backs advanced reactor future with £300 million for HALEU enrichment

January 16, 2024, 7:01AMNuclear News
Urenco UK’s Capenhurst enrichment site, which received a grant in July 2023 to prepare for HALEU enrichment. (Photo: Urenco UK)

The United Kingdom’s Department for Energy Security and Net Zero announced plans on January 7 to invest £300 million (about $383 million) to build a high-assay low-enriched uranium (HALEU) enrichment facility in northwest England. The goal? To “end Russia’s reign as the only commercial producer of HALEU.” Britain is now the first European country to declare that it will begin HALEU enrichment in a bid for supply chain security.