A cross-section view of X-energy’s Xe-100 reactor. (Image: X-energy)

U.K. nuclear services company Cavendish Nuclear has signed a memorandum of understanding with U.S. reactor and fuel-design engineering firm X-energy to act as its deployment partner for high-temperature, gas-cooled reactors (HTGRs) in the United Kingdom.

Headquartered in Rockville, Md., X-energy is the developer of the Xe-100, an 80-MWe reactor with a modular design permitting it to be scaled into a “four-pack” 320-MWe power plant. As a pebble bed HTGR, the Xe-100 would use TRISO particles encased in graphite pebbles as the fuel and helium as the coolant.

According to a May 11 joint statement from the companies, development and deployment of HTGRs in the United Kingdom would support an increase in the nation’s energy security, contribute toward the government’s net-zero-by-2050 commitment, and create considerable opportunities for the U.K. nuclear supply chain.

The outlook for new nuclear construction in Wales may have taken a bleak turn, but that hasn’t stopped the Welsh government from seeking other opportunities for its nuclear industry. On February 5, the government announced the signing of a memorandum of understanding with the Sizewell C Consortium, an organization of nearly 200 businesses and trade unions from the United Kingdom's nuclear supply chain focused on ensuring that the proposed Sizewell C nuclear power station in Suffolk, England, actually gets built.

The consortium includes the firms Atkins, Balfour Beatty Bailey, Cavendish Nuclear, Doosan Babcock, EDF, Laing O’Rourke, and Mott MacDonald, as well as the unions GMB, Unite, and Prospect.

A big deal: According to the announcement, in the event that the Sizewell C project is approved, the MOU could potentially see an investment of up to £900 million (about $1.2 billion) in the Welsh nuclear supply chain and up to 4,700 jobs supported across Wales. The signatories also view the agreement as a way to help retain the Welsh nuclear skills base.