Ontario begins construction of 1st small reactor as it aims to lead in new nuclear technology
- Ontario started construction in 2025 on the first small modular nuclear reactor in the G7 at the Darlington site.
- The project follows approval by Energy Minister Stephen Lecce and aims to meet rising electricity demand through four reactors producing 1,200 MW.
- The reactors use GE Hitachi's BWRX-300 technology, rely mainly on Ontario suppliers, and each will power roughly 300,000 homes.
- Lecce called the announcement a historic milestone, highlighting 18,000 jobs and $38.5 billion added to Canada’s GDP over 65 years.
- The project will be financed without major government funding and is expected to have broad economic and clean energy implications for Ontario.
20 Articles
20 Articles


Construction begins on $21B project to build four nuclear reactors in the GTA
The first of four small modular reactors being built at the Darlington nuclear generating station on Lake Ontario will begin supplying power by 2030.

Ontario begins construction of 1st small reactor as it aims to lead in new nuclear technology
Ontario is starting to build the first of four new, small nuclear reactors, as Canada seeks to lead the Group of Seven industrialized nations in developing next-generation nuclear technology.
Ontario greenlights plan to build small modular reactor at Darlington nuclear site
The Ontario government has approved Ontario Power Generation’s (OPG) plan to begin construction on the first of four small modular reactors (SMRs) at the Darlington nuclear site. Once complete, this SMR will be the first of its kind in the G7, reportedly producing enough clean electricity to power the equivalent of 300,000 homes. The provincial government says construction of the four units will create up to 18,000 Canadian jobs and add an avera…
Canada to Build $15 Billion Modular Nuclear Plant, First in G-7
Canada’s most populous province greenlit a C$20.9 billion ($15 billion) plan to build a new, smaller kind of nuclear plant, a step forward for a nascent technology that’s been touted as a way to meet surging power demand from artificial intelligence.
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