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News
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LCG, February 2, 2026--Ontario Power Generation (OPG) announced today that construction on the four-unit Darlington Refurbishment project is now complete. Station staff are completing final testing, and the last unit is expected to return to service in the coming weeks. OPG stated that the overall project is currently four months ahead of schedule and $150 million under budget.
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LCG, January 30, 2026--The North American Electric Reliability Corporation (NERC) yesterday issued its 2025 Long-Term Reliability Assessment (LTRA) and infographic that spotlight intensifying resource adequacy risks throughout the North American bulk power system (BPS) over the next 10 years.
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Industry News
OPG Completes Darlington Nuclear Station Refurbishment Project Under Budget and Ahead of Schedule
LCG, February 2, 2026--Ontario Power Generation (OPG) announced today that construction on the four-unit Darlington Refurbishment project is now complete. Station staff are completing final testing, and the last unit is expected to return to service in the coming weeks. OPG stated that the overall project is currently four months ahead of schedule and $150 million under budget.
The Darlington Refurbishment project secures over 3,500 MW of clean, reliable nuclear power to serve Ontario’s growing electric demands for the next 30 years or more. The four-unit, $12.8-billion mega-project commenced in October 2016 with Unit 2’s refurbishment. OPG announced that a total of 1,920 fuel channels and 3,840 feeder pipes were replaced, and millions of hours worked to complete the refurbishment project.
OPG’s President and CEO stated, "This is a momentous achievement for OPG, Ontario, and Canada. Through this project, we have demonstrated to the world that complex nuclear projects can be completed successfully, ahead of schedule and under budget. Our experience on this refurbishment, and the thousands of lessons we have learned, will serve as our foundation as we advance nuclear’s future. Darlington’s refurbishment has given us the confidence, the tools, and the skills to forge ahead."
OPG believes that the project’s success reflects a decade of meticulous planning and preparation, all of which took place before any work began. This included the construction of the world’s first full-scale reactor mock-up, which helped train and prepare workers before they stepped into the reactor vault.
OPG plans to leverage its Darlington Refurbishment experience to successfully execute future projects, including the (i) Pickering Nuclear refurbishment, (ii) the deployment of four Small Modular Reactors (SMRs) at the Darlington nuclear facility, and (iii) the proposed large nuclear development in Port Hope.
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