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Darlington New Nuclear Project

Clarington, Ontario

A partnership between Aecon, GE Hitachi and AtkinsRéalis will deliver North America’s first grid-scale Small Modular Reactor (SMR) through a six-year alliance agreement with OPG. 

The Darlington SMR will be a GE Hitachi BWRX-300 reactor, a new class of nuclear reactors that provide up to 300 megawatts of electric power – enough to supply over 300,000 homes – and have been designed to reduce construction costs compared to traditional nuclear-generating stations.

Aecon is the provider of all construction services, including project management, construction planning and execution. OPG serves as the license holder and will maintain overall responsibility for the project, including operator training, commissioning, Indigenous engagement, stakeholder outreach and oversight. GE Hitachi is the technology developer responsible for the design, and procurement of major components, engineering and support. AtkinsRéalis is the architect and engineer providing design, engineering and procurement support.

Nuclear power and SMRs are integral to Aecon’s growth strategy and will play a significant role in advancing global progress toward achieving sustainability targets and a net-zero economy by 2050.

Ontario Power Generation


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Darlington Nuclear Worker

Darlington Nuclear Refurbishment

Clarington, Ontario

The Darlington Nuclear Generating Station, one of the top performing nuclear stations in the world, has produced 20% of Ontario’s electricity since the early 1990s. Powering forward, the refurbishment project will extend Darlington’s operations to 2055.

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