Interstate Reliability Project

The Interstate Reliability Project is a 75-mile, 345-kV transmission line that originates at Millbury, Massachusetts and terminates at Card Street, Conn. The National Grid portion of the project begins in Millbury, Massachusetts, and travel south through Sutton, Northbridge, Uxbridge and Millville in the vicinity of Route 146 into North Smithfield, Rhode Island. It then travels west to Burrillville, Rhode Island, and into Connecticut where it connects to a Northeast Utilities line at Killingly. The Northeast Utilities project is a 38-mile, 345-kV transmission line that originates at Killingly and terminates at Card Street, Conn. This is one of four projects that make up the New England East-West Solution (NEEWS). All projects are needed to address weaknesses in the east to west and west to east transmission of power across Connecticut, Rhode Island and Massachusetts. The line was placed into operation in December 2015.

Project Sponsor Line Miles Voltage (kV) From State To State Year in Service
Eversource Energy 75 345 MA CT 2015
Estimated Costs ($M) Voltage Type Project Status Project Group Origin Point Destination Point
525 Operating NEEWS Millbury Card Street
Interstate Build Start NERC ISO/RTO Country Project Partners
2014 NPCC ISONE US Northeast Utilities, National Grid, USA, Connecticut Light & Power