Selected line route – Appalaches–Maine Interconnection

Hydro‑Québec’s selected line route

In summer 2019, Hydro‑Québec filed an environmental impact assessment (in French only) with the Ministère de l’Environnement et de la Lutte contre les changements climatiques. The study presents the line route selected by Hydro‑Québec for the project.

See visual simulations

Description of line route selected

The selected line route crosses these municipalities

Environmental approach and project optimization

Technical characteristics of the planned line

Visual simulations

Municipality

Views

Legend

Viewpoint
Planned tower
Line route selected
Tower for the line route variant
Appalaches substation
Crossing point

Description of line route selected

The line route selected is 100.9 km long and crosses both the Appalaches MRC (37.3 km) and Du Granit MRC (63.5 km), affecting eleven municipalities in all.

The future line will be paired with one or more existing lines along 73% of its route.

The crossing point, where the line will connect to the power system on the U.S. side, is located on private land northeast of ZEC Louise Gosford in the municipality of Frontenac.

Line route modified at Thetford Mines and Saint‑Joseph‑de‑Coleraine

Following a public consultation in spring 2020 and the BAPE hearing held the following summer, Hydro‑Québec modified the line route in the area of Thetford Mines and Saint‑Joseph‑de‑Coleraine.

The route variant submitted for consultation was adjusted and improved to respond as fully as possible to the concerns expressed by the communities, while taking into account the technical issues associated with the area to be crossed.

The line will therefore cross the old British Canadian mine and will meet up with Hydro‑Québec’s initial route at Lac Noir.

The route initially proposed ran along the right of way of an existing power line. The modification will move the new interconnection line farther away from the Black Lake residential sector in Thetford Mines, and will reduce the impacts on property owners in the mine area.

In Saint Joseph de Coleraine, the route was shifted west, close to the mining road.

The selected line route crosses these municipalities

MRC Les Appalaches
Municipality	Length
Saint-Adrien-d’Irlande (M)	3.6 km
Thetford Mines (V)	10.2 km
Saint-Joseph-de-Coleraine (M)	13.2 km
Disraeli (P)	6.7 km
Sainte-Praxède (P)	3.6 km
Total: 37.3 km

MRC Le Granit
Municipality	Length
Stratford (CT)	9.8 km
Stornoway (M)	14.8 km
Saint-Romain (M)	0.9 km
Nantes (M)	16.2 km
Sainte-Cécile-de-Whitton (M)	5.6 km
Frontenac (M)	16.3 km
Total: 63.6 km