Project Status – July 2019
This Web site was updated for the last time in January 2018. However, we would like to inform you of the following:
- In November 2017, the Québec government and Hydro-Québec confirmed that they were willing to underground the part of the line in the Forêt Hereford area because the project would still remain profitable and an underground route is technically feasible at this location.
- A preliminary route has already been confirmed for the underground portion of the line. However, field surveys still need to be performed in order to optimize the route. (see this document – In French only)
- The project was authorized by the Québec government in December 2017.
- The project was selected under a request for proposals issued by the state of Massachusetts, but the New Hampshire Site Evaluation Committee then refused to grant the approvals required for the portion of the line that would pass through New Hampshire.
- In mid-August 2018, Eversource appealed the rejection of its line proposal to the New Hampshire Supreme Court, and in mid-October, the court agreed to hear Eversource’s appeal.
- In July 2019, the New Hampshire Supreme Court upheld the Site Evaluation Committee's decision, after which Eversource announced the abandonment of the Northern Pass Transmission project.
The goal of this Hydro-Québec TransÉnergie project is to increase the energy interchange capacity between Québec and New England by building an interconnection to link Québec’s power grid with New Hampshire’s. The line will therefore be used to export electricity to the U.S.A.
Electricity sales outside Québec are highly profitable and the results of these sales benefit the entire Quebec community.
Connecting the grids
The project involves the construction of a 320-kV direct-current transmission line, about 79 km long. This line will be extended into the U.S.A. and will connect Des Cantons substation in Val-Joli to Franklin substation in southern New Hampshire. For further information on the project in New Hampshire, visit the Northern Pass Web site.
On the Québec side, to supply the planned transmission line, equipment that converts alternating current to direct current will be added to Des Cantons substation. The existing perimeter of Des Cantons substation will not be modified.
From the starting point of the planned line at Des Cantons substation in Val-Joli to the Québec/New Hampshire border, the study area covers 571 km2. The north and central sections of the study area are on agroforest land in the Appalachian plateau, while the south section extends to the White Mountain foothills. Population density is greater in the Appalachian plateau than in the border area.
The study area covers parts of three regional county municipalities (MRCs): Val-Saint-François, Haut-Saint-François and Coaticook. Within these MRCs, it crosses through the following municipalities: Val-Joli, Stoke, Ascot Corner, Cookshire-Eaton, Saint-Isidore-de-Clifton, Martinville, Sainte-Edwidge- de-Clifton, Saint-Malo, Saint-Venant-de-Paquette, East Hereford and Saint-Herménégilde.