Central Maine Power (CMPco) provides electricity service to more than 600,000 customers across central and southern Maine. CMPco bill pay is fast and secure through the official My Account portal. You can make one-time payments as a guest or log in for full account management, including AutoPay and eBill (paperless billing).
Quick Pay Links:
- Pay Online – Login to My Account
- Guest Checkout – One-Time Payment (you will need your CMP account number)
How to Make a CMPco Bill Payment
Guest Checkout – One-Time Payment (No Login Required)
- Go to the Guest Checkout page: https://portal.cmpco.com/payments/sap
- Enter your CMP account number and service ZIP code.
- Review the amount due and complete payment with bank account (ACH) or credit/debit card.
Payments may take 1 to 2 business days to post to your account.
Login to My Account (Recommended)
- Visit the Pay Online page and select Log In: https://www.cmpco.com/account/waystopay/payonline
- Sign in or register for My Account.
- Once logged in, you can:
- View bills and payment history
- Make payments without re-entering account details
- Enroll in free AutoPay
- Sign up for eBill (paperless billing)
- Receive usage alerts and notifications
Pay by Phone
Call 800-750-4000 and press 2 for the automated payment system (available 24/7). Credit/debit card or bank account payments are accepted.
In-Person / Pay in Store
Payments can be made at authorized payment locations or by mailing a check/money order to the address on your bill. Cash is not accepted for mailed payments.
Mobile App
Download the official CMP Mobile App to pay your bill, report outages, view usage, and manage your account from your smartphone.
Payment Methods and Fees
- Bank Account (ACH/e-check): Preferred method, usually no extra fee.
- Credit/Debit Card: Accepted with a convenience fee (displayed before payment).
- AutoPay: Free recurring payments from your bank account — highly recommended to avoid late fees.
Late Payments: Contact CMP customer service promptly if you need a payment arrangement or extension.
Contact Information
- Customer Service: 800-750-4000
- Payment Help: Use the support section in My Account or call the number above.
- Website: cmpco.com
FAQs
How do I make a CMPco bill payment online?
Use Guest Checkout at portal.cmpco.com/payments/sap for quick one-time payments or log into My Account for full management and AutoPay.
Is there a guest pay option for CMPco bills?
Yes. Guest Checkout allows one-time payments using only your CMP account number and service ZIP code.
What payment methods are accepted?
Bank account (ACH) and credit/debit cards. AutoPay from your bank account is free and recommended.
Can I pay my CMPco bill by phone?
Yes. Call 800-750-4000 and press 2 for the automated system.
Is there a mobile app for CMPco bill pay?
Yes. Download the CMP Mobile App to pay bills, view usage, and report outages conveniently.
How can I avoid late fees?
Enroll in free AutoPay and combine it with eBill (paperless) for automatic on-time payments and email notifications.
Tip: Keep your CMP account number handy for faster service. Register for My Account to access usage history, set up alerts, and enjoy the most convenient CMPco bill pay experience. For the latest payment options, fees, or assistance, visit the official Central Maine Power website at cmpco.com.
