The renewed licence, effective until the current licence expires on November 30, 2025, maintains OPG’s existing operational activities without changes. It includes a new requirement for OPG to provide two comprehensive performance updates on its licensed activities and mandates ongoing engagement with Indigenous Nations and communities throughout the licence period.
The Darlington plant, a four-unit Candu pressurized heavy water reactor facility, is nearing the completion of a major refurbishment. This process involves replacing critical components such as steam generators, pressure tubes, calandria tubes, and feeder tubes. It requires removing all reactor fuel and heavy water, isolating the reactor, and inspecting thousands of components before rebuilding for another 30 years of service. Three of the four units are currently operational post-refurbishment, with the fourth unit expected to resume service in 2026, concluding a 10-year refurbishment phase that OPG reports has met safety, quality, schedule, and financial targets.
OPG President and CEO Nicolle Butcher stated: “The longest-ever licence term for a Canadian nuclear station reflects the strong performance of the Darlington station, the proficiency of our highly skilled workers, and OPG’s continued commitment to safety and operational excellence. Under this licence, Darlington will continue to safely and reliably produce electricity to help meet Ontario’s energy needs for decades to come.”
The extended licence underscores the Darlington plant’s role in providing reliable, low-carbon electricity to Ontario. The refurbishment ensures the facility’s continued contribution to the region’s energy needs while supporting environmental goals. By maintaining high safety and operational standards, OPG aims to sustain economic benefits and community engagement in the region, reinforcing the plant’s significance in Canada’s energy landscape.
