Westinghouse and global engineering firm Amentum have signed a series of agreements aimed at accelerating the licensing of Westinghouse's AP300 small modular reactor with the Nuclear Regulatory Commission. The partnership also supports Westinghouse's broader push to deploy its larger AP1000 reactor at scale across the country.
Westinghouse president and CEO Dan Sumner said the company is pursuing what it calls a disciplined APX technology strategy, built on the AP1000 design and extended into the AP300 small modular reactor. He said the Amentum collaboration is expected to speed up the AP300's path through NRC review while the two companies also work together to strengthen engineering and execution capacity for delivering full-scale, one-gigawatt reactors. Westinghouse and Amentum have already worked together on nuclear power and decommissioning projects in the United States, the United Kingdom, Poland, Slovakia, Lithuania and South Africa.
The announcement follows other recent developments at Westinghouse, including a confidential filing for an initial public offering submitted to the Securities and Exchange Commission, and new detail from part owner Cameco on the scale of Westinghouse's reactor pipeline. That pipeline includes up to 10 AP1000 reactors tied to a Department of Energy nuclear supply chain loan program announced earlier this summer, along with a separate group of 10 reactors linked to a strategic partnership with the Department of Commerce.
The AP300 is designed as a scaled-down version of the AP1000, aimed at utilities and industrial customers seeking smaller, faster-to-build reactors as electricity demand grows nationwide.
Source: Nuclear Newswire / American Nuclear Society -- https://www.ans.org/news/2026-08-05/article-8272/westinghouse-updates-ap1000-potential-ipo-amentum-partnership/