Mid-Cape Reliability Project

Eversource is proposing to construct a new, 115-kilovolt (kV) transmission line between Bourne and Barnstable, Mass.

This upgrade is one of a group of projects designed to improve the reliability of the electric system serving the Southeastern Massachusetts and Greater Cape Cod areas, both today and in the future.

At Eversource, we're always working to serve you better. The new line would be constructed between Eversource’s Bourne Switching Station and its West Barnstable Substation. This proposed project also includes an expansion of the western side of the West Barnstable Substation.

The preferred route runs approximately 13 miles within an existing right of way (power line corridor), passing through portions of Bourne, Sandwich and Barnstable.

As part of the siting process, an alternative, hybrid overhead and in-street route will also be offered for the Massachusetts Energy Facility Siting Board’s (EFSB) consideration. This proposed solution would run overhead for approximately 6.1 miles in the existing right of way from the Bourne Switching Station to Quaker Meeting House Road in Sandwich. The line will then transition underground and extend approximately 7.9 miles to run underneath Quaker Meeting House Road in Sandwich, Service Road and Oak Street in Barnstable, and then connect into the West Barnstable Substation.


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Project Facts (preferred route and design):

  • Route length: 13 miles
  • Line location: Barnstable, Bourne and Sandwich, Mass.
  • Line voltage: 115,000-volt (115-kV) transmission line
  • Siting review by: Massachusetts Energy Facilities Siting Board (EFSB)
  • Public Open Houses: July 29 and 30, 2019
  • Filed Environmental Notification Form for review under the Massachusetts Environmental Policy Act (MEPA): November 2019
  • Filed Siting Petition with the EFSB: November 8, 2019

Estimated Timetable (subject to change):

  • EFSB Public Hearings: November 2, 4 and 6, 2020
  • Start of construction: 2022
  • EFSB Remote Siting Board Meeting: December 15, 2022
  • Projected in-service date: 2023


This project requires approval from the EFSB. The EFSB siting process includes both public and evidentiary hearings. The public and other interested stakeholders are given the opportunity to participate in the siting process through the EFSB-sponsored public hearing. Owners of property abutting and near the project will be informed of the public hearing dates and are encouraged to participate.

The EFSB Public Comment Hearing was held virtually on Wednesday, June 10, 2020.

The EFSB will conduct a remote Siting Board Meeting via Zoom on Thursday, December 15, 2022 at 1 p.m. For more information, please visit:  

To learn more about the siting process and how to participate, visit the EFSB website.  



We will continue to engage with town officials, residents, businesses, community groups and other stakeholders through municipal briefings, open houses and meetings – answering questions and listening to concerns about the project.

Eversource hosted public open house in Barnstable on July 29, 2019, and in Sandwich on July 30, 2019, to give local residents, business owners, and other interested stakeholders an opportunity to learn more about the project, ask questions, and provide feedback.

We will continue these outreach efforts as the proposed project proceeds through the siting process and into construction.


For more information about the Mid-Cape Transmission Reliability Project, send an email to or call 800-793-2202.