Skip to content

Utility guide

CMP

The electric company for Portland and southern Maine.

About 580,000

homes served · EIA, 2025

About $156 a month

average home bill

New to CMP?
Public Grid can set up your service for free.

Set up CMP · freeAbout 3 minutes · we’ll text you when it’s set up
Not CMP? Check your address.
CMP · 14 countiesPortland

Counties CMP serves, from EIA’s 2025 yearly report. Service areas are approximate.

Portland
CMP · 14 counties

Counties CMP serves, from EIA’s 2025 yearly report. Service areas are approximate.

Start, move or stop service

Start service

Moving into CMP’s area? Public Grid can set up your service for free.

Move within CMP’s area

We’ll stop service at your old place and start it at the new one.

Stop service

Moving out of CMP’s area? Stop service on the day you leave.

Outages

Power out?

Check the map first. If your home isn’t on it, let CMP know.

See a downed wire? Stay far away from it and call CMP at 1 (800) 696-1000 right away. If someone is hurt, call 911.

FAQ

Questions about CMP

CMP asks for your Social Security number and a second form of ID, such as your driver’s license number, when you start service.

Information as of Nov 2, 2026.

Public Grid isn’t affiliated with CMP.

Report a mistake (opens support.onepublicgrid.com in a new tab)