Northern Ontario’s largest hydroelectric project finishes construction


Work is completed on the Lower Mattagami River, the largest hydroelectric project in Northern Ontario in 50 years.

The project was developed by the Moose Cree First Nation and Ontario Power Generation. It is now fully in service. The $2.6 billion Lower Mattagami Project involved redeveloping four of existing hydro stations on the Mattagami River. Six new units will produce 438 MWs of electricity, enough capacity to meet nearly three times the peak demand of Thunder Bay.

This billion dollar project has had a positive impact on the northeast economy. Over the course of the project, about $1 billion in contracts was awarded to Ontario businesses, including over $350 million in the North.

Hundreds of northern residents worked directly on the project with many benefitted from indirect impacts. In total, about 1,800 people worked on the project at peak.


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