Westinghouse Electric Company and Tetra Tech Canada have signed a memorandum of understanding (MOU) establishing a collaboration framework supporting the development and deployment of Westinghouse AP1000 and AP300 reactor projects in Ontario.
Tetra Tech will leverage its engineering expertise and clean energy capacity in North America and the UK to support Westinghouse. The partnership aims to strengthen domestic project development capabilities and position Westinghouse’s technologies as leading solutions for Canada’s clean energy future.
“As a global leader in high-end consulting and engineering, and with deep roots in Canada’s clean energy industry, Tetra Tech is uniquely positioned to collaborate with Westinghouse as the country expands its nuclear power generation to meet future energy needs,” said Tetra Tech Unit President, Nuclear Services, Sanjay Krishnan.
John Gorman, President of Westinghouse Canada, said: “The agreement “underscores Westinghouse’s commitment to investing in Ontario’s nuclear future by partnering with the exceptional product and service providers that have long been the foundation of the province’s supply chain. By working with these trusted organisations, we aim to support Ontario’s energy goals and deliver successful outcomes for new nuclear projects.”
Since its 2023 acquisition by Canadian giants Brookfield and Cameco, Westinghouse has marketed the AP1000 as a “ready now” alternative to domestic designs, in particular the AtkinsRéalis Candu Monark, citing its operational experience in the US and China.
Westinghouse is working to build a local supply chain, signing a collaborative agreement with Aecon for nuclear new builds in 2024 and a MOU with BWXT Canada to manufacture AP1000 components. It has also opened a new engineering hub in Kitchener, Ontario, to support local projects. It is also pursuing a 2029 deployment for its smaller eVinci microreactor in Saskatchewan
In October 2025, Westinghouse and Energy Alberta signed a memorandum of understanding (MoU) to explore deploying an AP1000 reactor in the Peace River area, potentially marking the first nuclear plant in Western Canada.
However, Westinghouse faces competition from the Candu Monark and the BWRX-300 SMRs already selected by Ontario Power Generation. Some reports indicate potential scepticism from Canadian officials. In December 2025, The Logic reported: “The US government sees the Canadian-owned Westinghouse nuclear company as a tool of American influence, federal officials have warned Natural Resources Minister Tim Hodgson.” The Logic obtained a briefing note prepared for Hodgson earlier in 2025 through an access-to-information request.
“The US government continues to actively promote the adoption of Westinghouse technology abroad, including in Canada, and considers Westinghouse a key US strategic asset regardless of its ownership structure,” the note said. “Despite Canadian ownership, the company’s supply chain, technical knowledge and capabilities for its reactors remain largely based in the US, and export of the technology still requires US approval.”
All of Canada’s 17 large power-generating reactors are Candus; one is in New Brunswick, the rest in Ontario, and Energy Alberta is proposing to build two Candu reactors near Peace River. “Many aspects of the Candu system… were historically based on principles of Canadian energy independence, particularly from the US,” the briefing note said, adding that, while Westinghouse might make a case for competition among suppliers those Candu reactors are significant: “Globally, mixed reactor fleets have presented operational challenges, such as the need for different fuel types and varying waste disposal requirements, often resulting in inefficiencies and higher costs to taxpayers.”
