Appalaches-Bas-Saint-Laurent

This study area encompasses the Chaudière-Appalaches, Centre-du-Québec (municipality of Inverness), Bas‑Saint‑Laurent and Gaspé (MRC of D’Avignon) regions.

Thank you for taking part!

900 people shared their feedback and opinions during the recent open houses. You weren’t able to attend one of these information and consultation activities? No worries, the recording of the June 9 webinar is now available for replay.

See the webinar [in French only] This link will redirect you to an external site.

We’d like to know what you think!

Tell us what you think

Share your comments about the line routes and the substation locations under study by answering our survey (in French only).

Time required: 2 to 3 minutes. Thank you!

Start the survey 
Pin your comments

Access this exchange space and highlight the areas of interest and sensitive elements that, in your opinion, should be taken into account so that the project can be best adapted to local realities. (in French only)

Access this exchange space  

Project summary

Why?

  • Pursue the development of wind potential
  • Improve grid resilience and reliability in the face of increasingly intense weather events.

How?

  • Phase 1: Build a 315-kV substation and approximately 260 km of 315-kV lines.
  • Phase 2: Build a 315-kV substation and approximately 175 km of 315-kV lines.

When?

  • Phase 1: 2034
  • Phase 2: 2036

Project optimization continues

Based on an in‑depth technical analysis, the voltage of the new transmission line between Appalaches substation (in Saint‑Adrien‑d’Irlande) and the Bas‑Saint‑Laurent region will now be 315‑kV instead of 735‑kV as initially planned.

Given the existing transmission infrastructure, a 315‑kV line will offer more flexibility for regional electricity generation to be integrated on the grid without reducing transmission capacity. All other project parameters remain unchanged.

Project schedule

Phase 1

2024-2027

Draft design phase: Technical studies, environmental assessment, public consultation

2027-2029

Government approvals

2029-2034

Work: Clearing and construction

Phase 2

To be confirmed

To reach us

We’re very keen on keeping the lines of communication open. Please send us your questions and comments about the project.

Info-Project line: 1 866 388‑1978

Ariane Doucet-Michaud

Advisor – Regional Affairs

doucet-michaud.ariane@hydroquebec.com

Katerine Desforges

Advisor – Relations with First Nations and Inuit

desforges.katerine@hydroquebec.com

Upgrading the main transmission system – Appalaches-Bas-Saint-Laurent [in French only]

Would you like to be informed about project progress and the consultation activities that have been scheduled?