2025’s Top 10 Nuclear Companies in Canada

We’re tracking 45,472 Nuclear companies in Canada.

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Companies	Employees	HQ location	Revenue	Founded	Estimated Traffic	Industries
Cameco	View 2,052 employees	🇨🇦 Saskatchewan, Saskatoon+6	$ >1000M	1988	54,491	Energy, Renewable Energy
OPG	View 8,240 employees	🇨🇦 Ontario, Toronto+7	$ 500-1000M	1999	317,900	Energy, Renewable Energy
Kinectrics	View 1,099 employees	🇨🇦 Ontario, Toronto+2	$ 500-1000M	1912	78,596	Electrical Distribution, Electronics
Ontario Clean Air Alliance	View 4 employees	🇨🇦 Ontario, Old Toronto+2	$ 500-1000M	1997	14,694	Energy, Renewable Energy
Canadian Nuclear Laboratories	View 1,986 employees	🇨🇦 Ontario, Chalk River+5	$ 100-500M	2014	148,225	Nuclear, Energy
Aecl	View 979 employees	🇨🇦 Ontario, Chalk River+6	$ 100-500M	1952	30,095	Nuclear, Association
Uranium Royalty	View 4 employees	🇨🇦 British Columbia, Vancouver+3	$ 100-500M	2019	44,928	Mining, Mineral
Saskatchewan Research Council	View 282 employees	🇨🇦 Saskatchewan, Saskatoon+4	$ 50-100M	1947	16,835	Association, Environmental Engineering
Nuclear Waste Management Organization	View 234 employees	🇨🇦 Ontario, Toronto+5	$ 10-50M	2002	19,224	Energy, Nuclear
Discovery Silver TSX:DSV OTCQX:DSVSF	View 78 employees	🇨🇦 Ontario, Toronto+2	$ 10-50M	2017	6,380	Mineral, Mining
Cameco	View 2,052 employees	🇨🇦 Saskatchewan, Saskatoon+6	$ >1000M	1988	54,491	Energy, Renewable Energy
OPG	View 8,240 employees	🇨🇦 Ontario, Toronto+7	$ 500-1000M	1999	317,900	Energy, Renewable Energy
Kinectrics	View 1,099 employees	🇨🇦 Ontario, Toronto+2	$ 500-1000M	1912	78,596	Electrical Distribution, Electronics
Ontario Clean Air Alliance	View 4 employees	🇨🇦 Ontario, Old Toronto+2	$ 500-1000M	1997	14,694	Energy, Renewable Energy
Canadian Nuclear Laboratories	View 1,986 employees	🇨🇦 Ontario, Chalk River+5	$ 100-500M	2014	148,225	Nuclear, Energy
Aecl	View 979 employees	🇨🇦 Ontario, Chalk River+6	$ 100-500M	1952	30,095	Nuclear, Association
Uranium Royalty	View 4 employees	🇨🇦 British Columbia, Vancouver+3	$ 100-500M	2019	44,928	Mining, Mineral
Saskatchewan Research Council	View 282 employees	🇨🇦 Saskatchewan, Saskatoon+4	$ 50-100M	1947	16,835	Association, Environmental Engineering
Nuclear Waste Management Organization	View 234 employees	🇨🇦 Ontario, Toronto+5	$ 10-50M	2002	19,224	Energy, Nuclear
Discovery Silver TSX:DSV OTCQX:DSVSF	View 78 employees	🇨🇦 Ontario, Toronto+2	$ 10-50M	2017	6,380	Mineral, Mining

1. Cameco

Cameco, headquartered in Saskatchewan, Canada, stands out as one of the world’s largest uranium producers, largely fueling the nuclear energy sector. Their operations include both mining and conversion services that prepare uranium for use in nuclear power generation globally. This specialization positions Cameco as a critical player in the production of clean energy alternatives, aligning with global sustainability goals. The company’s strategic focus is on the reliable and cost-effective delivery of uranium, essential for both existing and future nuclear reactors in Canada and overseas.

Location 🇨🇦 Saskatchewan, Saskatoon	Size View 2,052 employees
Revenue $ >1000M	Industries Energy, Sustainability, Science and Engineering, Natural Resources
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2. OPG

Ontario Power Generation (OPG) plays a critical role in the nuclear industry of Ontario, Canada, by being one of the largest providers of safe and reliable nuclear power. The company’s fleet of nuclear power plants is pivotal in producing about half of the electricity in Ontario. With an eye on sustainability and safety, OPG is also leading efforts to refurbish existing reactors and invest in new technologies to extend their operational lifespan. This strategic direction not only secures energy supply for future generations but also supports the provincial goal of reducing greenhouse gas emissions.

Location 🇨🇦 Ontario, Toronto	Size View 8,240 employees
Revenue $ 500-1000M	Industries Energy, Sustainability, Science and Engineering
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3. Kinectrics

Headquartered in Toronto, Canada, Kinectrics is a premier provider of life cycle management services for the electricity industry, with a strong focus on nuclear. The company excels in testing, inspection, certification, and engineering consulting, aiming to enhance the operational performance of nuclear utilities in Canada. Kinectrics serves as a critical partner in the nuclear sector, supporting both the extension of plant life and the adherence to safety and performance standards, ensuring that nuclear energy remains a reliable and safe power source in the region.

Location 🇨🇦 Ontario, Toronto	Size View 1,099 employees
Revenue $ 500-1000M	Industries Energy, Consumer Electronics, Hardware, Science and Engineering, Sustainability
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4. Ontario Clean Air Alliance

Based in Ontario, Canada, the Ontario Clean Air Alliance (OCAA) is not your typical nuclear industry player. Rather than producing nuclear energy, OCAA is actively involved in advocating for the reduction and eventual phase-out of nuclear power in favor of safer, more sustainable energy alternatives like hydro, wind, and solar. Their strategic focus is on influencing policy and public opinion to promote cleaner air and a sustainable energy future for Ontario. This approach highlights a dedication to environmental health and energy affordability, aligning with current global trends towards greener energy solutions.

Location 🇨🇦 Ontario, Old Toronto	Size View 4 employees
Revenue $ 500-1000M	Industries Energy, Sustainability, Natural Resources, Science and Engineering
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5. Canadian Nuclear Laboratories

Canadian Nuclear Laboratories (CNL) is based in Ontario, Canada and is one of the premier nuclear science and technology organizations in the country. CNL principally focuses on developing energy solutions, environmental technologies, and advancing health sciences through nuclear science. Positioned as a leader in decommissioning and waste management, CNL also supports Canada’s nuclear legacy activities. This organization’s expertise in managing complex nuclear installations makes it a pivotal player in supporting nationwide and global nuclear safety and innovation efforts.

Location 🇨🇦 Ontario, Chalk River	Size View 1,986 employees
Revenue $ 100-500M	Industries Science and Engineering, Energy, Community and Lifestyle, Sustainability
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6. Aecl

Aecl (Atomic Energy of Canada Limited), headquartered in Ontario, Canada, is a federal Crown corporation that specializes in a range of nuclear services including research and development, engineering, nuclear waste management, and decommissioning. Aecl’s expertise helps to support not only Canada’s nuclear safety framework but also contributes to the supply of medical isotopes and other nuclear-related products. As Ontario focuses on expanding its nuclear energy capabilities to meet future energy demands, AECL plays a pivotal role in ensuring that nuclear technologies are used safely and effectively in the region.

Location 🇨🇦 Ontario, Chalk River	Size View 979 employees
Revenue $ 100-500M	Industries Science and Engineering, Community and Lifestyle, Energy, Sustainability
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7. Uranium Royalty

Based in Vancouver, Canada, Uranium Royalty Corp. strategically positions itself in the nuclear energy sector by focusing on uranium investments. This company is the first uranium-focused royalty company, providing strong portfolio leverage to uranium prices without the operational risks associated with mining. Operating in a critical industry, Uranium Royalty offers financing solutions to uranium miners and holds physical uranium, ensuring a stable supply chain that meets the growing global demand for clean energy.

Location 🇨🇦 British Columbia, Vancouver	Size View 4 employees
Revenue $ 100-500M	Industries Natural Resources, Sustainability, Science and Engineering
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8. Saskatchewan Research Council

Saskatchewan Research Council (SRC)Based in Saskatchewan, Canada, the Saskatchewan Research Council is a leading research and technology organization that plays a pivotal role in the nuclear industry. SRC is renowned for its expertise in innovative technologies and services aimed at enhancing the performance and safety of nuclear operations. With a focus on sustainability and technological advancements, SRC provides research, development, and testing services that support the lifecycle management of nuclear facilities, helping organizations meet their strategic and operational goals in the nuclear sector.

Location 🇨🇦 Saskatchewan, Saskatoon	Size View 282 employees
Revenue $ 50-100M	Industries Community and Lifestyle, Science and Engineering, Sustainability
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9. Nuclear Waste Management Organization

Nuclear Waste Management Organization (NWMO)Located in Canada, the Nuclear Waste Management Organization (NWMO) is dedicated to the safe and secure management of Canada’s used nuclear fuel. The organization employs cutting-edge scientific and engineering methods to ensure that nuclear waste is managed in a manner both safe for the environment and society. A key strategy of the NWMO involves engaging with communities and stakeholders to develop long-term waste management solutions, reflecting a commitment to sustainability and ethical responsibility in the nuclear sector. This focus aligns with the evolving needs of Canada’s nuclear industry and supports continual improvements in waste management practices.

Location 🇨🇦 Ontario, Toronto	Size View 234 employees
Revenue $ 10-50M	Industries Energy, Science and Engineering, Sustainability, Natural Resources
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10. Discovery Silver TSX:DSV OTCQX:DSVSF

Discovery Silver, based in Canada, primarily focuses on mining and resource development, rather than directly engaging in the nuclear industry. It explores and develops promising silver properties, striving to leverage the commodities market to optimize resource extraction and sustainability. Despite its primary focus on silver, the elements mined by Discovery Silver can be essential in various industrial applications, including the nuclear sector, thereby indirectly supporting the industry in Canada.

Location 🇨🇦 Ontario, Toronto	Size View 78 employees
Revenue $ 10-50M	Industries Natural Resources, Sustainability, Energy, Science and Engineering
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