Ontario Approves Construction of GE Vernova Hitachi's BWRX-300 Small Modular Reactor
by Sophie Jenkins
London, UK (SPX) May 12, 2025

GE Vernova Hitachi Nuclear Energy (GVH) has received approval from the Province of Ontario and Ontario Power Generation (OPG) to begin construction of the first BWRX-300 small modular reactor at OPG's Darlington site. This marks a significant milestone as the first of four planned BWRX-300 reactors at the site, with the initial unit expected to be completed by the end of the decade.

"In deploying the first BWRX-300 small modular reactor, Ontario is leading the way globally in the deployment of SMRs,"said Mavi Zingoni, CEO, Power, GE Vernov. "Our work with OPG and project partners will serve as a benchmark for the global nuclear industry."

"As the world looks to adopt SMR technology, we are proud to be embarking on construction of the first BWRX-300 with OPG, AtkinsRealis and Aecon," said Lisa McBride, Canada Country Leader, GVH. "Ontario's supply chain is expected to contribute significantly to this project, bringing substantial economic benefits to the province, including the creation of thousands of jobs during manufacturing, construction and operation."

Site preparation at Darlington has already been completed, and the Canadian Nuclear Safety Commission granted OPG a construction license for the first unit in April.

The 300 MW BWRX-300 is a 10th-generation small modular reactor design, building on decades of real-world boiling water reactor operating experience. It incorporates a standardized design, proven delivery model, and benefits from GVH's extensive cross-border regulatory expertise.

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