Ontario Construction News staff writer
The Canadian Nuclear Safety Commission (CNSC) has renewed Ontario Power Generation’s (OPG) licence to operate the Darlington Nuclear Generating Station (DNGS) for another 20 years — the longest licence ever issued for a nuclear facility in Canada.
The decision, announced last Friday, extends OPG’s authority to operate the Clarington, Ont., station until Nov. 30, 2045. The current licence expires in November 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,” said Nicolle Butcher, OPG president and CEO, in a statement. “Under this licence, Darlington will continue to safely and reliably produce electricity to help meet Ontario’s energy needs for decades to come.”
The licence renewal comes as OPG nears the end of its $12.8-billion refurbishment project at Darlington. Work on the project began in 2016 and is scheduled for completion in early 2026, earlier than originally planned and within budget despite challenges from the COVID-19 pandemic and inflation. The overhaul has included major component replacements, inspections and system upgrades designed to extend the plant’s operating life.
The CNSC held a two-part public hearing in March and June to review OPG’s application, with input from commission staff and intervenors.
Ontario Energy and Mines Minister Stephen Lecce welcomed the decision, saying nuclear energy will play a central role in meeting the province’s growing electricity demand.
“Ontario has a proud legacy of operating the safest and most reliable nuclear facilities in the world,” Lecce said. “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.”
The four-reactor Darlington station supplies about 20 per cent of Ontario’s electricity.
