EIA-derived commercial rate data · 06/2026
Portland, ME commercial electricity rates
Who delivers electricity to Portland businesses, how retail supplier choice works there, the Maine commercial average with its EIA data month, and who regulates it. Market context with its source and date, never a quote.
EIA averages, data through 06/2026, published per state. All-in means supply and delivery together; supplier contract quotes cover the supply portion only, so the two are not directly comparable.
Portland commercial electricity at a glance
Portland (Cumberland County) is delivered by Central Maine Power, which stays the wires company whichever supplier a business picks. Portland, the state's largest city, is delivered by Central Maine Power. The EIA publishes a statewide figure, not a city one: the average Maine commercial account paid 22.24¢ per kWh all-in, supply and delivery together, versus 14.19¢ nationally (EIA, 06/2026), and used about 2,998 kWh a month (EIA, through 2026). That average mixes corner stores with hospitals, so it is market context rather than a quote for any one business, and supplier contract quotes cover the supply portion only, so the two figures are not directly comparable. Voltcheckr LLC is registered as an electricity broker in Texas (PUCT Broker Registration BR260102) and is not currently registered in Maine.
Electricity in Portland
Portland, the state's largest city, is delivered by Central Maine Power.
Delivery utility
Central Maine Power
Cumberland County
Regulator
Maine Public Utilities Commission (Maine PUC). www.maine.gov/mpuc
How retail choice works across Maine, the utilities under it and the state's own numbers are on the Maine commercial electricity page.
Broker registration
Voltcheckr LLC is registered as an electricity broker in Texas (PUCT Broker Registration BR260102) and is not currently registered in Maine. The figures on this page are market data with their source and date, not an offer of brokerage services in Maine. Questions about retail choice in Maine go to the Maine Public Utilities Commission (Maine PUC). Questions or complaints about Voltcheckr LLC's Texas registration go to the Public Utility Commission of Texas, Customer Protection Division, (512) 936-7120 or toll free 1-888-782-8477, customer@puc.texas.gov. Our broker disclosures state how we are paid.
Portland commercial electricity questions
What is the average commercial electricity rate in Portland, Maine?
The EIA publishes a statewide figure, not a city one: the average Maine commercial account paid 22.24¢ per kWh all-in, supply and delivery together, versus 14.19¢ nationally (EIA, 06/2026), and used about 2,998 kWh a month (EIA, through 2026). That average mixes corner stores with hospitals, so it is market context rather than a quote for any one business, and supplier contract quotes cover the supply portion only, so the two figures are not directly comparable.
Can a Portland business choose its electricity supplier?
Yes. Portland is in Central Maine Power's territory, and the utility keeps delivering the power whichever supplier the business picks. The supply portion can come from a competitive supplier approved by the Maine PUC, and a business that never chooses stays on the utility's default supply rate.
Who delivers electricity in Portland?
Central Maine Power delivers electricity in Portland and stays the delivery utility with any supplier. The state regulator is the Maine Public Utilities Commission (Maine PUC), https://www.maine.gov/mpuc.
Is Voltcheckr registered as an electricity broker in Maine?
No. Voltcheckr LLC is registered as an electricity broker in Texas (PUCT Broker Registration BR260102) and is not currently registered in Maine. The market data on this page is published for reference and is not an offer of brokerage services in Maine.