Green Line is a high voltage direct current (HVDC) electric transmission system that will transfer up to 1200 megawatts (MW) of electric energy from Aroostook County, Maine to greater Boston, Massachusetts. The full route is via a combination of a terrestrial transmission line in Maine and submarine cable across the Gulf of Maine to Massachusetts. Converter stations at each end of a +/-320 kV direct current (DC) transmission line converts alternating current (AC), like that used in the typical household, to direct current (DC). DC is the most efficient way to move electricity long distances. HVDC systems provide great flexibility and near instantaneous control over how much and in which direction power flows, thus proving many reliability benefits to the larger electric grid.
On November 8, 2013, the New England States Committee on Electricity (NESCOE) issued its hydro imports analysis report performed by Black & Veatch. The analysis includes an assessment of 1200MW link between New Brunswick and Massachusetts and its impact on lowering regional energy prices and reducing greenhouse gas emissions.(Read the press release and full report…)
Green Line will strengthen the transmission grid in New England and help provide greater access to competitively priced non-carbon emitting resources in Maine and eastern Canada. Read more…
Matthew Stone of the Bangor Daily News (November 22, 2013) reports on evolving regional cooperation on energy policy, including renewable energy, natural gas pipelines and electric transmission. Read the article…