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Huckins Hill to Beebe River (Z180) Line Rebuild Project

Why Are We Doing This Project?

Recent inspections and engineering analysis of the Z180 transmission line revealed that many of the structures are in poor condition due to their age, woodpecker damage, insect damage, and pole rot.

The Z180 transmission line currently has 38 structures. Of these, 9 are already weathering steel and will not be replaced, while one will be removed without replacement. The remaining 28 structures will be replaced with weathering steel structures of a similar design. In addition, the conductor (wire) is being replaced, and fiber optic cable, known as Optical Ground Wire (OPGW), is being installed the entire length of the line.

This maintenance is part of our ongoing investments to deliver reliable energy to our customers and communities.

Where Is The Work Being Done?

This work will take place within the existing right-of-way (power line corridor) of the Z180 Line, a 115-kilovolt (kV) transmission line built in 1964 that is 3.4 miles long.

The Z180 line starts at the Huckins Hill Substation in Holderness and ends at the Beebe River Substation in Campton. 

See the project plans. (This map set is currently in draft form and is subject to change due to permitting, constructability and other considerations.)

This transmission line crosses the following roads:


None (access to the substation will be from the existing driveway off Route 175)


Trapper Road, Pulsifer Road, Ken Mar Drive, Stickney Road, Route 175, Champagne Circle, Silver Dawn Road

When Is The Work Being Done?

  • Local permitting: Third and fourth quarter 2022
  • State permitting: Third and fourth quarter 2022
  • Federal permitting: Third and fourth quarter 2022
  • Construction Start Date: First quarter 2023
  • Projected In-Service Date: First quarter 2024
  • Restoration Completion Date: Second quarter 2024

Construction Updates

See our construction fact sheet for more information about activities occurring in your neighborhood.

The photo below was taken near Trapper Road in Campton, showing a newly installed weathering steel structure and temporary arm extension.

Week of November 27

  • No work currently planned

Week of December 4

  • No work currently planned

    This schedule is approximate and subject to change. If there are major changes to the schedule above, updates will be provided as soon as possible.

    Community Outreach

    We're committed to engaging municipal officials, residents, businesses, community groups and other stakeholders about upcoming project activities through municipal briefings, mailings, site meetings, virtual meetings and door-to-door outreach, while adhering to COVID-19 social distancing and other related health and safety guidelines.

    We utilize a variety of outreach methods to ensure that all customers and property owners along our transmission lines receive adequate and timely information about our projects. For this Project, we will be sending periodic updates as letters mailed directly to all stakeholders, as well as a combination of the following additional methods:

    • Door-to-door outreach
    • Site visits (upon request)
    • Virtual meetings (upon request)
    • Signage placed strategically near construction areas or in residential areas
    • Regular field presence to ensure the safety of our customers, nearby property owners, and our construction crews 
    • Read the Start of Construction letter

    Commitment to Safety

    We take every safety precaution while working in local communities, and all people working on the construction project carry identification. The project work will not interrupt electric service to homes or businesses.

    All Eversource personnel follow applicable health and safety guidelines.

    Have Questions?

    Keeping the lines of communication open is an important part of our work in your community.

    For questions or more information about the project, please contact us at 888-926-5334 or