Maritime Link Infrastructure
The Maritime Link Project involves the design, engineering, construction, commissioning, operations and maintenance of a new 500 MW (+/- 200 kV) HVdc (high-voltage direct current), as well as a 230 kV HVac (high-voltage alternating current) transmission line.
The project is divided into three distinct geographical regions:
Island of Newfoundland
The Project overview for the island of Newfoundland includes an estimated 300 kilometres of transmission line along new and existing corridors between Granite Canal and Cape Ray. The associated infrastructure includes two switchyards, one converter station, one transition compound, one onshore cable anchoring site, one grounding site, roughly 20 kilometres of grounding line, and about two kilometres of underground cable.
Two subsea HVdc cables span approximately 170 kilometres across the Cabot Strait from Cape Ray on the island of Newfoundland to an area west of the Nova Scotia Power Inc. (NSPI) Point Aconi generating station in Cape Breton. This portion of the Project includes two landfall sites where the cables come ashore in Nova Scotia and on the island of Newfoundland.
The Project overview for Nova Scotia includes fewer than 50 kilometres of new HVdc transmission line, parallel to an existing transmission corridor, between a point on the west side of the Point Aconi generating station and an existing substation at Woodbine. Associated infrastructure includes one converter station, one transition compound, one onshore cable anchoring site, one grounding site, roughly 40 kilometres of grounding line and two sections of underground cable (one kilometre each).