Walpole to Holbrook Reliability Project

The Walpole to Holbrook Reliability Project involves a new 14.7-mile, 115-kV transmission line and switching station. The project is needed to ensure reliability to the Greater Boston/Metro West regions. Construction is expected to be complete by spring 2019 at a cost of $34.6m.

Project Sponsor Line Miles Voltage (kV) From State To State Year in Service
Eversource Energy 14.7 115 MA MA 2019
Estimated Costs ($M) Voltage Type Project Status Project Group Origin Point Destination Point
34.6 Under Construction Walpole No. 146 Holbrook Substation
Interstate Build Start NERC ISO/RTO Country Project Partners
2017 NPCC ISONE US