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 Beck Generating Complex to power 160,000 homes annually.

The 12.5 megawatt Lac Seul Generating Station was recently completed. The station was built adjacent to an existing facility, the Ear Falls Generating Station. The new station captures the water that was spilled past the existing station to maximize the use of the available water resources at the site.

As well, OPG redeveloped three generating stations located on the Upper Mattagami River in Northern Ontario and one on the Montreal River. The combined capacity of the new generating stations will be 35 megawatts, an increase of 45 per cent from the old generating stations.

Also, OPG is working on the Environmental Assessment for the Little Jackfish project in Northwestern Ontario. It will generate up to 75 megawatts of new power for Ontario.

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 under construction. The project will add 440 megawatts of hydroelectric capacity to Ontario's electricity system.

Watch our newest video on hydroelectric projects.

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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. (Also available in French.)

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