Green Line


Members of the Green Line successfully developed two HVDC projects in the northeast.  The Neptune Regional Transmission System has been operational since July of 2007.  The Hudson Transmission Project was completed in June 2013. To learn more about the development of the Neptune Project, read the linked article in Transmission & Distribution World from August 2007 (PDF, 4MB) or view the Neptune web site at Find more information on the Hudson Transmission Project at

Industry News

The New England States Committee on Electricity (NESCOE) sent a letter to ISO-NE on January 21st announcing an agreement of the six New England States to issue “one or more requests for proposals…to advance the development of transmission infrastructure that would enable delivery of at least 1200 MW and as much as 3600 MW of clean energy into the New England electric system from no and/or low carbon emission resources.”… (Read the full letter.)


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…

Media Coverage

Governor LePage (ME) and Governor Patrick (MA) issue press releases announcing agreement on moving ahead with new regional infrastructure.  (See releases here…)

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