Ontario Power Generation

New Hydroelectric Projects

Hydroelectricity was the driver of Ontario’s economy for much of the twentieth century, providing the province with the power it needed to grow. Ontario still has considerable hydroelectric resources that can be developed and OPG will be working to develop those resources in a safe and environmentally responsible manner.

The Niagara Tunnel is a major initiative on the road to this goal. When complete, it will supply enough water to OPG's Sir Adam Bech Generating Complex to power 160,000 homes annually.

Also under construction is the 12.5 megawatt Lac Seul Generating Station. The station is being built adjacent to an existing facility, the Ear Falls Generating Station. The new station will capture the water that is currently spilled past the existing station to maximize the use of the available water resources at the site.

As well, OPG plans to redevelop three generating stations located on the Upper Mattagami River in Northern Ontario. When completed, the combined capacity of the new generating stations will be approximately 35 megawatts, an increase of 45 per cent from the existing generating stations.

In addition to these projects, there are a number of other projects in different phases of development. The most notable of these is the Lower Mattagami project which is currently in the early planning stages. The project would add 450 megawatts of hydroelectric capacity to Ontario’s electricity system.

Learn more about the new Niagara Tunnel Project.

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Download our Water Safety brochure for more information on safety around dams and hydro stations.

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