OPG says the first Darlington BWRX-300 will miss 2030 and C$7.7 billion

Ontario Power Generation said on November 10, 2026 that Darlington New Nuclear Project Unit 1 is no longer expected to reach commercial operation in October 2030 or to be completed within the previously disclosed estimate of C$7.7 billion, including systems and services common to the planned small modular reactors. OPG said the change reflects GE Vernova Hitachi's ongoing engineering for the first-of-a-kind BWRX-300 and effects on construction and the supply chain, and that a revised cost and schedule assessment should be substantially complete by mid-2027. A GE Vernova Hitachi spokesperson told Canary Media the company is working with OPG and that engineering is one of several factors, along with procurement, construction, inflation and geopolitical risk. No replacement in-service date was given.