Cameco outlines IPO registration plan while Westinghouse details AP1000 deployment pipeline

IPO registration and regulatory limits

Cameco announced it is registering for a proposed IPO of Westinghouse ahead of its quarterly results call. The company said the number of shares to be offered and the price range have not been determined and that the offering would be subject to market and other conditions. Cameco also said it is extremely limited in what it can disclose about the IPO under US Securities and Exchange Commission rules.

Westinghouse featured prominently in Cameco’s quarterly update for the quarter ended 30 June, including discussion of its technology platform across the nuclear power value chain and a global deployment pipeline for AP1000 projects. The business is currently owned 49% by Cameco and 51% by Brookfield, following a 2023 transaction that followed Westinghouse’s 2018 acquisition out of bankruptcy by Brookfield Business Partners.

Pipeline for 91 potential AP1000 reactors

Cameco said Westinghouse’s technology is used by 57% of the global operating fleet of 417 reactors. The materials it filed describe deployment opportunities for 91 potential AP1000 reactors totaling about 105GWe across global markets, with timing and ordering based on closeness to final investment decisions.

The pipeline includes up to 10 AP1000 units supported through American Nuclear Supply Chain Loans announced by the US Department of Energy earlier this year, with a commercial operation timeframe by the mid-2030s. It also cites up to 10 additional US units supported through a strategic partnership among Cameco, Brookfield and the US Department of Commerce announced in 2025, targeting commercial operation by the mid-to-late 2030s.

Other opportunities listed include resumption of the two-unit VC Summer project with early-to-mid 2030s commercial operation; three units at Lubiatowo-Kopalino in Poland with operations in the mid-2030s; two units each in Bulgaria (Kozloduy units 7 and 8) and Ukraine (Khmelnitsky units 5 and 6) for mid-to-late 2030s operation; 11 “FEED-Stage Projects” in the Netherlands, Slovenia, Finland/Sweden, and the USA with a late-2030s timeframe; and up to 51 units across Canada, India, Saudi Arabia, Slovakia, the USA and other European countries with a late-2030s to early-2040s deployment window.

Procurement and long-lead planning focus

Westinghouse’s management said the company’s complete reactor design and operating experience support procurement aspects of new projects and that few bottlenecks are perceived around construction, while also noting risks.

Cameco President and Chief Operating Officer Grant Isaac emphasized the significance of US government funding and the importance of securing long-lead items to support construction projects. Management also pointed to a standardized design, sequential construction projects, and “simplifying” projects by incorporating lessons learned as factors intended to reach Nth-of-a-kind deployments more quickly.

Cameco’s materials also included illustrative economics contrasting near-term deployments with Nth-of-a-kind deployments, including estimates that the nuclear construction period (from first nuclear concrete to commercial operation) is around 66 months per unit for near-term deployments and reduces by 20–30% for Nth-of-a-kind deployments.

DOE announces partnerships for AI data centers and energy infrastructure at Paducah site

The Department of Energy has announced two partnership agreements aimed at building AI data centers alongside energy infrastructure at Department of Energy sites. The announcements frame the effort as a way to redevelop existing DOE property to support new energy and data center loads.

The first announcement this week includes a partnership intended to redevelop parts of the former Paducah Gaseous Diffusion Plant into a data center campus with energy infrastructure. The scope described focuses on site redevelopment and the combination of computing facilities with associated power and energy systems.

DOE’s approach links private-sector participation with DOE site use, reflecting how new electricity-intensive facilities can drive additional demand for power services and supporting infrastructure. For supply-chain planners, the key operational implication is that construction and integration work for energy and data center systems may require coordination with site access, utilities, and long-term site services typical of legacy DOE locations.

Although the news is not about reactor construction or nuclear fuel-cycle projects, it is relevant for non-nuclear facility procurement planning at DOE sites. Redevelopment of former industrial infrastructure can affect permitting workflows, mobilization and staging assumptions, and the sourcing of materials and equipment needed to connect new loads to energy infrastructure.

A second DOE partnership agreement was also announced as part of the same initiative, indicating multiple locations are being pursued for AI data center–linked infrastructure development. The public information provided emphasizes partnership structures and redevelopment goals rather than detailed engineering scope or timelines for specific construction packages.

  • DOE announced two partnership agreements for AI data centers combined with energy infrastructure at DOE sites.
  • One partnership this week targets redeveloping parts of the former Paducah Gaseous Diffusion Plant into a data center campus with energy infrastructure.
  • The initiative may influence procurement and coordination needs tied to site services and energy integration at a DOE legacy location.

ITER vacuum vessel sector modules continue to be installed in the tokamak pit

Vacuum vessel fabrication and module build

ITER’s plasma chamber, the vacuum vessel, is the structure that houses fusion reactions and serves as a first safety containment barrier. With an interior volume of 1,400 cubic metres, the chamber will be formed from nine wedge-shaped steel sectors measuring more than 14 metres in height and weighing 440 tonnes each. When assembled, the ITER vacuum vessel is described as having an outer diameter of 19.4 metres, a height of 11.4 metres, and an approximate weight of 5,200 tonnes. After installation of in-vessel components including the blanket and the divertor, the vacuum vessel total weight is stated as 8,500 tonnes. Each sector module includes a vacuum vessel sector, two toroidal field coils, thermal shields, and auxiliary components, with lifting equipment and stabilising beams attached for the lift operation.

Core sector-module installation progress

The fabrication of the vacuum vessel sectors is shared between Europe (five sectors) and South Korea (four sectors). South Korea’s initial responsibility covered producing two vacuum vessel sectors, and an additional agreement in 2016 extended its scope to produce two more sectors originally assigned to the EU. Sector modules that make up the ITER core have been progressively installed within the tokamak pit since April 2025. The sixth tokamak sector module, #1, weighing about 1,100 tonnes, was transferred from the Assembly Hall and lowered into the pit in a coordinated lifting operation that mobilised more than 100 people, took 30 hours, and concluded on 28 July. The suspended load, including its lifting rig, is described as nearly 1,400 tonnes. The latest sector installation is said to bring two-thirds of the torus-shaped core into place. With sector module #1 now complete, it joins the five others already in the tokamak pit: #4, #5, #6, #7 and #8.

Schedule outlook for remaining modules and torus joining

ITER states that it is on track to install the final sector module in mid-2027, with teams continuing to identify opportunities for further schedule optimisation. The project says it expects a seventh sector module to be transferred before the end of the year. Once all nine sector modules are positioned in the pit, teams will proceed with the work of joining the sectors to complete the torus.