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Published February 26, 2026 at 7:00 PM
Updated February 27, 2026
Site work for a power facility in Sept-Iles, Quebec. Conceptual plans call for site work for a power facility.
Increasing the capacity of the Sainte-Marguerite-3 (SM-3) generating station by at least 440 MW (or even 600 MW according to some estimates), reaching a total capacity of over 1,300 MW by 2031. The scope of work includes the installation of a third turbine-generator unit in the existing underground infrastructure, without diverting the river or modifying the reservoir. Key details of the SM-3 project: - Objective: To increase flexibility and power output during peak winter periods to meet the requirements of the 2035 Action Plan. - Work: Installation of a third turbine, a 300-metre underground penstock, and a new transformer. TIMELINE: The project is preliminary. Preliminary studies are underway at the owner. According to the owner's preliminary scheduling development of the project is scheduled from 2028 to 2031. Notes: - The project to upgrade the equipment at the Sainte-Marguerite-3 power plant is subject to an environmental assessment. - Project value is not finalized and is estimated based on the average rate $/MW for such projects in Quebec.
Conceptual
Power Plant
$2,500,000,000.00
Public - State/Provincial
Site Work
Plans and Specifications are not available for this project. If that changes, they will be made available here.
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