Friday, September 26, 2025
The Canadian Nuclear Safety Commission (CNSC) has announced its decision to renew Ontario Power Generation’s (OPG) licence for the Darlington Nuclear Generating Station (DNGS) for a 20-year term. This decision authorizes OPG to operate the DNGS to November 30, 2045, making it the longest nuclear operating licence granted in Canada.
The current licence expires on November 30, 2025.
“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,” said Nicolle Butcher, OPG president and CEO.
The Darlington Refurbishment Project commenced in 2016 and is now nearing completion earlier in 2026 than its original schedule and on budget, including COVID-19 pandemic and inflation impacts. During refurbishment, the team replaced major components, completed inspections, and introduced modifications to improve the station. This work will ensure safe and reliable operation of the station throughout the licence term and beyond.
The CNSC held a two-part public hearing in March and June 2025 to consider the application from OPG and written submissions from CNSC staff and intervenors.
The Darlington Refurbishment Project is No.. 4 on ReNew Canada’s 2025 Top100 Projects report.
“Ontario has a proud legacy of operating the safest and most reliable nuclear facilities in the world. With energy demand set to rise significantly over the next 25 years, nuclear power remains the backbone of Ontario’s first-ever integrated energy plan to ensure our province has the energy it needs to power our homes, businesses and the most competitive economy in the G7,” said Stephen Lecce, Ontario’s Minister of Energy and Mines.
“Our government welcomes the Canadian Nuclear Safety Commission’s decision to approve Ontario Power Generation’s operating licence at the Darlington Nuclear Generating Station through 2045 – the longest operating license ever issued by the CNSC. This decision underscores the world-class safety and operational excellence of Ontario Power Generation.”
Featured image: (OPG)
