Start service
Moving into CMP’s area? Public Grid can set up your service for free.
Utility guide
The electric company for Portland and southern Maine.
About 580,000
homes served · EIA, 2025
EIA, 2025
About $156 a month
average home bill
New to CMP?
Public Grid can set up your service for free.
Counties CMP serves, from EIA’s 2025 yearly report. Service areas are approximate.
Counties CMP serves, from EIA’s 2025 yearly report. Service areas are approximate.
Moving into CMP’s area? Public Grid can set up your service for free.
We’ll stop service at your old place and start it at the new one.
Moving out of CMP’s area? Stop service on the day you leave.
Outages
Check the map first. If your home isn’t on it, let CMP know.
CMP’s map shows known outages.
Tell CMP your power is out.
See when power should be back at your address.
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
Information as of Nov 2, 2026.
Public Grid isn’t affiliated with CMP.
Report a mistake (opens support.onepublicgrid.com in a new tab)
Power through connection
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