The goal of this project is to increase the energy interchange capacity between Québec and New England by building a 1,200-MW interconnection to link Québec’s power grid with New Hampshire’s.
The project involves the construction of a 300-kV direct-current transmission line, about 75 km long. This line will be extended into the U.S.A. to connect Des Cantons substation to Franklin substation in southern New Hampshire.
The project also includes the construction of two converters at Des Cantons substation, each with a capacity of about 600 MW. They will convert alternating current to direct current, to supply the planned transmission line.