Proposed Project at Chalk River, Ontario

The MMR™ Project at Chalk River is a commercial demonstration project under development by GFP. The project will deploy USNC’s MMR™ technology at the Chalk River Laboratories site in Ontario. GFP is currently in Stage 3 of Canadian Nuclear Laboratories' thorough process to select proponents to construct and operate a small modular reactor (SMR) at that location. The application for a Licence to Prepare Site has been filed with the Canadian Nuclear Safety Commission, which regulates all nuclear activities in Canada.


The proposed project includes a nuclear plant containing an MMR™ reactor, and an adjacent plant, which are the main physical works related to the project. The nuclear plant provides approximately 15 MW of process heat to the adjacent plant where it is converted to electrical power (up to 5 MW of electricity) and/or heat as per client requirements. The electrical power could also be supplied to the area grid, over an anticipated life span of 20 years. The MMR™ technology is an economically competitive alternative to greenhouse gas-emitting diesel power and heat generation, with a smaller environmental footprint.

More Information

Read more about GFP’s proposed project in our Project Information and Materials.

New! March 20, 2020: CNSC extends date for written submissions on EA scope to June 1, 2020. Follow this link to find CNSC's full comments on the developing situation. The Canadian Nuclear Safety Commission (CNSC) will render a decision on the proposed scope to be considered for the environmental assessment (EA) for GFP’s proposed project at the Chalk River site, based on these written submissions.

Read the full notice from the CNSC for more information.

Read the Notice of Commencement for the Environmental Assessment here.


A Key Project Collaborator - Ontario Power Generation

Ontario Power Generation is supporting GFP in this project. OPG is one of North America’s most diverse electricity generators. OPG produces about half of the electricity Ontarians rely on every day, and has more than 50 years of extensive experience in all aspects of the nuclear life cycle, including operations, maintenance, reactor refurbishment and waste management.

OPG is supporting the project by sharing their extensive experience in engineering, licensing, and regulatory processes. OPG will also support the environmental impact assessment process and would be the operator of the plant.

Proposed Project Timeline

The following timeline is for planning purposes only and subject to project, licensing and regulatory approvals. The proposed schedule for Submission of Licence Application Information further supports this schedule. This aligns with Canadian Nuclear Laboratories’ long-term business strategy that includes the goal of siting and constructing an SMR by 2026.

Next Steps

On July 15, 2019, the Canadian Federal Government announced the notice of commencement of the environmental assessment (EA) for the proposed project at Chalk River. 


While this is an important milestone, it is still very early in the process. In addition to the successful completion of an EA, there is also a series of regulatory licences that would need to be approved by the Canadian Nuclear Safety Commission, each of which will include the opportunity for Indigenous community, public and stakeholder input.


In parallel to the environmental assessment and licensing processes, Canadian Nuclear Laboratories continues its thorough proponent selection process.

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