Hydro-Québec on Jan. 16 started delivering electricity through the Appalaches–Maine interconnection line under the terms of the 2018 contract with Massachusetts electricity distribution companies.
This interconnection is the first major expansion of HVDC infrastructure linking Hydro-Québec’s grid to neighboring markets since the inauguration of the Radisson–Sandy Pond line in the early 1990s, the Canadian utility noted.
The new 320‑kV direct-current line will connect to the New England Clean Energy Connect in Maine.
"Several Hydro-Québec teams dedicated their efforts and expertise to designing and building this strategic 100-km infrastructure across Québec. On the US side, our partner constructed a 230-km transmission line in Maine," Hydro-Québec said.
The Appalaches–Maine line adds a strategic link to Québec’s energy security, it said. Thanks to the interconnection’s two-way transit capability, Hydro-Québec will eventually be able to use it to both export and import electricity.
"The energy delivered to New England will support the region’s decarbonization efforts by reducing its reliance on thermal generating stations to meet its essential power needs. Hydro-Québec’s renewable hydropower is expected to lower greenhouse gases by 3 million tonnes annually—the equivalent of taking 700,000 vehicles off the road each year," the utility said.
