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AtkinsRéalis sub wins US$327mn SMR contract in Canada
30 May 2025
Canadian power company Candu Energy, a subsidiary of engeering, design, and project management firm AtkinsRéalis, secured a C$450 million (US$327 million) execution contract from Ontario Power Generation (OPG) for the next phase of Canada’s first grid-scale small modular reactor (SMR).

Construction Briefing previously reported on the start of site work for the BWRX-300 reactor at the Darlington Nuclear Generating Station, east of Toronto. The new contract formalises Candu’s expanded role in delivering the 300MW unit, which is expected to begin operations in 2030.
Under the deal, Candu Energy will provide project management, licensing, engineering, design, procurement, construction support, and commissioning services. The company had already been involved in the project’s alliance phase alongside GE Hitachi Nuclear Energy and Aecon Kiewit Nuclear Partners.
“This reaffirms our leading position in the global nuclear energy market,” said Ian L. Edwards, president and CEO of AtkinsRéalis, who called the project Canada’s first new nuclear build in nearly 30 years.
The Canadian Nuclear Safety Commission granted a construction licence in April, and the Ontario government gave final approval earlier this month. The province says power demand is expected to rise by 75% by 2050, and that both large and small nuclear technologies will be needed to meet future grid needs.
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