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Utility guide

CORE Electric Cooperative

The electric company for parts of Colorado’s Front Range.

About 170,000

homes served · EIA, 2025

About $145 a month

average home bill

1 (800) 332-9540core.coop (opens core.coop in a new tab)

New to CORE Electric Cooperative?
Public Grid can set up your service for free.

Set up CORE · freeAbout 3 minutes · we’ll text you when it’s set up
Not CORE Electric Cooperative? Check your address.
CORE Electric Cooperative · 11 countiesDenver and much of Colorado: Xcel EnergyCastle Rock

Counties CORE Electric Cooperative serves, from EIA’s 2025 yearly report. Service areas are approximate.

Castle Rock
CORE Electric Cooperative · 11 counties

Counties CORE Electric Cooperative serves, from EIA’s 2025 yearly report. Service areas are approximate.

Start, move or stop service

Start service

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

Set up CORE

Move within CORE Electric Cooperative’s area

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

Transfer my service

Stop service

Moving out of CORE Electric Cooperative’s area? Stop service on the day you leave.

Stop my service

Outages

Power out?

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

See a downed wire? Stay far away from it and call CORE Electric Cooperative at 1 (833) 267-3349 right away. If someone is hurt, call 911.

Contact information

Phone
1 (800) 332-9540
Website
core.coop (opens core.coop in a new tab)
Online
Start or stop on core.coop (opens core.coop in a new tab)

FAQ

Questions about CORE Electric Cooperative

CORE asks for ID when you start service. Public Grid’s setup asks for your Social Security number and tells you exactly what you’ll need.

Information as of Nov 2, 2026.

Public Grid isn’t affiliated with CORE Electric Cooperative.

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