What are small modular reactors (SMRs)?

Small Modular Reactors, or SMRs, are smaller, faster to construct, and lower cost than conventional large nuclear. SMRs can operate as baseload capacity and can also have some flexibility to be dispatched to provide firming support for intermittent renewables like wind and solar. SMRs are also cost-competitive with other sources of power generation.

The facts are simple

24x7
SMRs operate reliably around the clock

Clean
SMRs release virtually no greenhouse gases

Safe
Modern SMRs have advanced safety features

More about SMRs

How SMRs work

SMRs use the same basic principles as traditional nuclear reactors but are built using modular components for easier construction and scalability. Their small size makes them suitable for a range of applications, from grid scale power generation, to powering remote communities, to supporting industrial facilities.

The benefits of SMRs

SMRs offer a smaller footprint and enhanced safety features compared to traditional large nuclear. They are cost competitive and can help Alberta meet its decarbonization objectives.

Safety and regulation

Canada’s nuclear safety standards are among the highest in the world, ensuring SMRs meet rigorous safety and environmental requirements. Modern SMR designs include enhanced safety features, such as passive cooling systems and automated shutdowns.

FAQ

Answers to the most common SMR questions

Canada has some of the most rigorous and highly regulated standards and requirements for nuclear energy in the world.  The Canadian nuclear industry has been reliably operating nuclear power plants to the highest levels of safety for decades and OPG specifically is recognized as a world leader in nuclear operations. 

SMRs are subject to rigorous design reviews and ongoing inspection by licensing authorities to ensure they are safe. In addition to nuclear plants being regulated nationally by the Canadian Nuclear Safety Commission (CNSC), they’re also regulated globally by the International Nuclear Regulators’ Association (INRA).  

Today’s reactor technology is based on 50 years of established science, engineering and innovation, with enhanced safety features compared to traditional nuclear power plants.

The storage of nuclear waste is also subject to rigorous monitoring to ensure it meets the safety and security requirements set out by licensing authorities. 

SMRs are small and modular, requiring a footprint comparable to a standard US football field.

For example, the BWRX-300 reactor that OPG has selected to build at its Darlington nuclear site produces about 300 MW of electricity, which is enough to power approximately 300,000 homes.

The cost of an SMR project varies with the technology selected, site specifics and other factors. Capital Power and OPG are developing estimates for the potential costs of an Alberta project as part of the feasibility assessment now underway.

Related pages

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Alberta SMR study

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Nuclear licensing and regulation

Learn how the CNSC and NWMO ensure the safe regulation, operation, and long-term management of Canada’s nuclear facilities and materials.
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Nuclear waste

Understand how nuclear waste is safely managed, stored, and minimized in accordance with regulatory requirements and through innovative practices.
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