Work to rebuild Marie-Victorin substation and convert the voltage to 120/25 kV

To meet the growing demand for electricity in downtown Longueuil and because the substation has reached the end of its service life, Hydro‑Québec is rebuilding the substation and convert the voltage to 120/25 kV. Located on Rue Saint‑Charles Ouest, at the intersection of Boulevard Lafayette, the new substation will supply power to 12,500 customers in Longueuil, on Île Sainte‑Hélène and on Île Notre‑Dame for the next 50 years.

The project involves the construction of a new substation near the current one, which will then be dismantled.

Impacts of the work and mitigation measures

Hydro‑Québec is working with stakeholders to establish measures to limit the project’s impacts and is providing information on key project phases.

Some images of the future hydroelectric station

Public participation

Hydro‑Québec will consult the public and stakeholders so the substation is integrated into the local environment as seamlessly as possible. Invitations to take part in the consultations will be issued in fall 2022.

Work schedule

Visit our page on key project stages to learn more.

Powering communities

The Integrated Enhancement Program (IEP) was created to enhance and maintain sites in communities affected by new transmission facilities. Hydro‑Québec provides eligible organizations affected by our projects with funding for community‑chosen initiatives.

Discover the Program