The project consists of building a transmission line extending approximately 100 km between Appalaches substation in Saint‑Adrien‑d’Irlande (near Thetford Mines in the Chaudière‑Appalaches region) and a connection point on the Québec–Maine border. The project’s overall aim is to increase the exchange capacity between Québec and New England.
The new 320‑kV direct-current line will connect to the future New England Clean Energy Connect (NECEC) line, slated for construction in Maine.
In tandem with this project, a new AC-to-DC converter will be installed at Appalaches substation to supply the planned transmission line.
Commissioning is scheduled for 2023.