East Wilton Distribution Substation

Reliability Upgrades

East Wilton Distribution Substation


Project Overview

Central Maine Power Company (CMP), in conjunction with its parent company Avangrid, is undertaking a multi-year effort to upgrade or replace 10 distribution substations throughout its service territory that are aged and/or have condition or capacity issues in need of attention. This is part of CMP's commitment to provide safe, reliable service to our customers.


CMP is building a new distribution substation at 1228 Main Street in East Wilton to replace an existing substation to the east of it on Temple Road in Wilton and it will connect to the same transmission line.


Project Purpose and Need 

The existing electric distribution substation on Temple Road was built in the mid-1900s on wood poles that now are significantly leaning and pose a safety and system reliability risk. The current location does not have the space for the construction and installation of newer substation equipment which is needed for modern day operation that meets Avangrid and National Electrical Safety Code (NESC) standards.


Once the new substation is completed and online, the existing substation in the residential neighborhood will be demolished and grass will be planted in its place.


Fact Sheet

For more information, view the Bowman Street Substation Fact Sheet here.

Estimated Timetable

  • Construction Start: June 2020
  • Completion/In-Service Date: Late 2020

For more information or questions

Please contact the Electrical Infrastructure Projects Information Line at 1-888-267-0831 and include the name of the project - East Wilton Substation - with your detailed message.  A representative from the project team will return your call within three (3) business days. Or please email us at Outreach@cmpco.com.