Undergrounding of 25-kV Power Lines Supplying Downtown Gatineau
Project overview
To meet growing electricity demand in downtown Gatineau, Hydro‑Québec will be reinforcing and improving the long-term operability of its distribution system.
To achieve this, Hydro‑Québec will be undergrounding existing overhead distribution lines between Val‑Tétreau substation and Rue Eddy.
A new underground concrete duct bank (roughly 2 km long) to hold the 25-kV lines will be installed.
Preliminary work will begin in fall 2023. Construction of the underground concrete duct bank and electrical works will last from May 2024 to December 2025.
Associated enhancements in the area
The undergrounding of the existing line means that Hydro‑Québec will be able to dismantle an overhead distribution line that runs between Val‑Tétreau substation and Hull‑2 generating station, along with an overhead transmission line that is no longer used.
- Removal of 9 transmission towers
- Removal of 14 distribution towers
Documentation
- Project News – Partial closure of Voyageurs Pathway – Phase 2 of 2 – January 2025 [PDF 1.49 MB]
- Project News – Partial closure of Voyageurs Pathway – Phase 1 of 2 – September 2024 [PDF 1.17 MB]
- Communiqué – Entrave sur le boulevard Alexandre‑Taché – 29 août 2024 [In French Only - PDF 163 kB]
- Project News – Undergrounding of power lines downtown Gatineau – June 2024 [PDF 633 kB]
- Communiqué – Enfouissement de lignes électriques desservant le centre‑ville de Gatineau – 22 novembre 2023 [In French Only - PDF 113 kB]
- Project News – Undergrounding of power lines downtown Gatineau – Fall 2023 [PDF 1.50 MB]
| Discussions with stakeholders | January 2022–February 2024 |
| Communication with the public | November 2023–January 2026 |
| Land clearing | November–December 2023 |
| Construction of the concrete duct bank and electrical works | May 2024–December 2025 |
| Commissioning | December 2025 |
| Dismantling of overhead lines | As of January 2026 |
For more information
If you have any questions, comments or concerns about the project, please feel free to contact us.
Contact person
Caroline Milliard
Advisor – Community Relations
