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Leadership in Transmission 

Eversource is improving the reliability of the electric grid with a number of significant construction projects involving high-voltage transmission lines in Connecticut, Massachusetts and New Hampshire. We operate New England’s largest energy delivery system.

At Eversource, we're always working to serve you better. Committed to reliability and safety, we are currently constructing multiple major projects to maintain and upgrade the transmission system. Eversource manages nearly 2,300 miles of transmission corridors or rights of way. Our investment in the transmission system from 2019-2023 is expected to be approximately $3.35 billion.

In addition to reliability benefits, these projects will provide greater access to newer, more efficient, and cleaner generating plants. Transmission infrastructure projects also help our communities with tax revenues. 


As New England’s businesses and population grow, and the demand for electricity increases, Eversource is working proactively with state and town officials to ensure that our electric system keeps pace with our customers’ evolving needs.

We have many major transmission initiatives underway in Connecticut, Massachusetts and New Hampshire designed to maintain the reliability of the region’s electric grid. We're committed to providing reliable service to the 500 cities and towns where we live and work.


Power line upgrades benefit all of us by:

  • Providing electric reliability, including
    • Adequacy – The ability to supply the electrical demand and energy requirements of customers at all times
    • Resiliency – The ability to harden the power grid to prevent damage from extreme weather and other disasters
    • Security – The ability of the electric system to withstand sudden disturbances or unanticipated loss of system elements, including attacks from unfriendly sources
  • Supporting communities with economic development and job creation
  • Connecting customers to competitively priced and cleaner sources of power throughout the region
  • Improving the environment as the result of a decrease in air emissions from reduced operation of less-efficient power plants. 

Related Links:

  • Vegetation for Transmission Rights of Way: This handout is designed to assist in the selection of the correct vegetation that is acceptable to plant within or along a transmission right of way.

  • Best Practices for Maintaining Transmission Rights of Way: When we maintain transmission rights of way, we work closely with landowners to minimize impact to vegetation and property. This handout explains how. 

  • Making Requests for Wood: Property owners whose land falls within the right of way to be cleared may retain all or a portion of the wood cleared on the property. This handout explains the process and includes a request form.

  • Transmission Right of Way Activities in Agricultural Lands: When working in croplands and pasturelands within rights of way, we are committed to working with landowners before, during and after construction on transmission rights of way. This handout explains how.

  • Managing Access to Transmission Rights of Way: In transmission rights of way, we prioritize public safety, maintaining the integrity of transmission system property and equipment and respecting the rights of private property owners. To support this effort, we will install entry barriers as requested by property owners in targeted access road locations to help deter unauthorized vehicle access to the utility rights-of-way.
  • Electric and Magnetic Fields: An informational brochure to help you better understand electric and magnetic fields (EMF). We rely on the consensus of scientific industry leaders, including the World Health Organization, when developing EMF-related policies and procedures.


Keeping the lines of communication open is an important part of our work in your community. For more information, send an email to or call 800-793-2202.