Section 31 Transmission Line Rebuild

Central Maine Power (CMP) will begin rebuilding and modernizing its five mile Section 31 Transmission Line in Spring 2026, which serves Brunswick, Topsham, and parts of Harpswell. The line runs from the Topsham 115kV Substation near Crooker to the Brunswick West Side Substation on Barrows Drive. 

This project includes replacing wood structures with slightly taller galvanized steel poles and installing a compact, covered tree wire system to improve reliability and reduce outages from trees and faults. Construction is anticipated to take place between spring 2026 through the end of 2026.

 

These upgrades will:

  • Replace aging infrastructure
  • Expand capacity to meet growing electricity demand
  • Improve reliability for over 8,000 customers
  • Enhance resiliency during major, stronger storms
  • Support clean energy technologies like EVs and heat pumps

 

Community Open Houses

CMP is hosting Community Open Houses in Brunswick and Topsham. These events will provide opportunities to learn more, ask questions, and speak directly with project representatives. 

 

Brunswick:

  • Dates:  Monday, February 2 and Thursday, February 5
  • Time: 5 p.m. - 7 p.m.
  • Location: Brunswick Junior High School Cafeteria, 65 Columbia, Brunswick, ME 04011

 

Topsham:

  • Date:  Tuesday, March 3
  • Time: 5 p.m. - 7 p.m.
  • Location: Topsham Municipal Building, 100 Main St., Topsham, ME 04086

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