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​About Canadian Nuclear Laboratories (CNL​​)

Established in 2014, Canadian Nuclear Laboratories (CNL) is a wholly-owned subsidiary of Atomic Energy of Canada Limited. CNL joined COG as a member in 2015. Employing approximately 3,400 people at 12 locations across Canada, CNL’s corporate headquarters and core research and development operations are situated at Chalk River Laboratories in the upper Ottawa Valley.

CNL is a world leader in developing peaceful and innovative applications from nuclear technology through its expertise in physics, metallurgy, chemistry, biology and engineering. Highly-skilled employees deliver a range of nuclear services – ranging from research and development, design and engineering to specialized technology, waste management and decommissioning.

CNL is committed to ensuring that Canadians and the world receive energy, health, and environmental benefits from nuclear science and technology with confidence that nuclear safety and security are assured. In 2019, CNL and TRIUMF announced they had completed the first joint production run of actinium-225, a rare medical isotope that shows great promise as the basis for new, cutting-edge cancer therapies.

It plans to become a global hub for small modular reactor research and technology and intends to have a demonstration unit built on a CNL site by 2026.

CNL is a voting member on COG’s Board of Directors represented by Neil Mantifel, Chief Operating Officer, Nuclear Operations.



​1 unit

​135(t) MWe​


Contact Information

​WebsitePhone number​Address​​
Main Switchboard: 
+1 866​​-512-2325

Community Enquiries: 
+1 800-364-6989
CNL - Chalk River Laboratories (Head Office):
286 Plant Road
Chalk River, Ontario
Canada K0J 1J0