Hydro-Québec Commits $340M to Upgrade Saguenay High-Voltage Transmission Network
Hydro-Québec announces a $340 million transmission line and substation refurbishment in the Saguenay–Lac-Saint-Jean region to power expanding aluminum smelters and data parks.
Choseno Quebec Energy Bureau August 20, 2026 1 min read QC, CA
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SAGUENAY, QC — Hydro-Québec executive leadership announced a major grid reinforcement initiative Thursday night, allocating $340 million to rebuild and upgrade 160 kilometers of 315-kilovolt transmission lines and refurbish three regional electrical substations in the Saguenay–Lac-Saint-Jean industrial corridor.
Clean Industrial Power and Transmission Capacity
The capital investment increases bulk electrical transmission capacity into the region by 800 megawatts, directly supporting industrial expansion at low-carbon aluminum smelters (Elysis), green chemical manufacturing plants, and high-efficiency regional data infrastructure. The project incorporates high-capacity aluminum-composite conductors engineered to withstand heavy winter freezing rain and severe weather loads, minimizing outage risks for heavy industrial consumers.
Hydro-Québec President and CEO Michael Sabia stated that modernizing regional transmission networks ensures Quebec's clean hydroelectric advantage directly powers regional economic prosperity.
Regional Municipalities and Labor Union Praise
Municipal leaders in Chicoutimi and Jonquière welcomed the project, highlighting that reliable high-voltage electrical infrastructure provides global industrial manufacturers with the certainty required to invest in Quebec facilities.
Regional construction unions noted that the project will create more than 400 skilled electrical and forestry clearing jobs over a three-year construction cycle.
Environmental Assessment and Groundbreaking
Regional public consultation sessions and environmental certificate applications will conclude this autumn, with on-site line construction commencing in spring 2027.
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