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The Darlington New Nuclear Project (DNNP) in Bowmanville, Ontario was named in the first wave of projects referred to Canada's new Major Projects Office in September 2025. On 23 October 2025, Prime Minister Mark Carney and Ontario Premier Doug Ford jointly announced that two state-owned investment vehicles — the federal Canada Growth Fund and Ontario's Building Ontario Fund — would each take a minority equity stake in the project (15% and 7.5% respectively) via a CAD 2 billion and CAD 1 billion capital commitment. OPG remains majority owner and operator. The financing is structured in two tranches: initial capital for SMR 1, and additional capital for SMRs 2-4 contingent on project milestones. This is a direct government equity injection into a commercial nuclear-generation asset — functionally a state-aid/subsidy mechanism designed to de-risk a first-of-kind SMR build for private and future Indigenous co-investors.
Severity is set at 3 (matching the UK's comparable Wylfa SMR commitment): CAD 3 billion (~USD 2.14bn combined) is a large, precisely quantified, already-executed equity commitment with defined ownership percentages — more concrete than a site/vendor announcement, though construction of SMRs 2-4 remains contingent on future milestones.
already in the register (UK Wylfa/GBE-N, Netherlands NEO NL, US DOE TVA-Holtec grants) — G7/allied governments are absorbing first-of-kind nuclear construction risk via direct equity rather than leaving it to utilities alone.
taking minority equity) that may be replicated for future Canadian nation-building projects referred to the Major Projects Office.
Canada's Department of Finance, June 2026) as a second, related filing tied to the same project.
provincial capital.
competitive-distortion concern (GTA lists no explicitly affected jurisdictions).
whether it materially changes the CGF/BOF ownership split.