Central Maine Power (CMP) commercial electricity rates

• Average commercial price, 202523.76¢per kWh, customers on bundled service
• vs Maine average+14%state commercial average 20.86¢
• Commercial customers78,906largest of 5 in Maine
• Average use1,600 kWha month per commercial customer
• Average bill$380a month per commercial customer
• Since 2015+102%from 11.77¢ per kWh
• Outages177 mina year per customer · US average 124

Central Maine Power (CMP) is an investor-owned utility serving 14 counties in Maine. Among the 5 Maine utilities in EIA’s 2025 sales data with 500 or more commercial customers, it is the largest, with about 70% of the state’s commercial customers. EIA lists it as Central Maine Power Co.

Central Maine Power commercial electricity prices, 2015 to 2025

In 2015 Central Maine Power billed its commercial customers on bundled service an average of 11.77¢ per kWh. In 2025 the figure was 23.76¢, so it rose 102% over 10 years. The average for all commercial customers in Maine rose 67% over the same period. The highest year was 2023, at 24.65¢. Between 2024 and 2025 it rose 13%.

Average use and average bill are the utility’s commercial sales and revenue divided by its commercial customers and by twelve. The bill is an all-in figure: energy, delivery, demand and fixed charges together. A few very large customers pull both averages up, so most businesses use and pay less than the average.

Central Maine Power customers who buy their energy from a supplier

In 2025, 68% of the commercial kWh Central Maine Power delivered went to customers buying their energy from a competitive supplier, and 31% of its commercial customers did so. The share by kWh is the larger because the businesses that shop tend to be the larger ones. Central Maine Power bills those customers for delivery only, at an average of 8.96¢ per kWh, which is the part of a bill that no supplier can change.

Residential, commercial and industrial prices at Central Maine Power

In 2025 the average commercial price at Central Maine Power was 13% below the residential figure and 6.2% above the industrial one. Larger customers take power at a higher voltage and use it more steadily, so at most utilities the average falls from residential to commercial to industrial. Which class an account falls in is the utility’s decision, and the line between commercial and industrial is drawn differently from one utility to the next.

The customers who buy their energy from a supplier are counted separately, and Central Maine Power bills them for delivery alone:

How Central Maine Power’s commercial rates are set

Central Maine Power is investor-owned, so its rates are set in cases before the Maine Public Utilities Commission and published in a tariff, which is a public document. A commercial account is billed on a rate schedule, chosen by the size of the account and the voltage it takes power at, and a schedule usually combines a fixed monthly charge, a charge per kWh and, above a certain size, a demand charge on the highest rate of draw in the month. The schedule code is printed on the bill. What a business in Maine can and cannot choose is on the Maine page.

Meters, time-varying rates and net metering at Central Maine Power

EIA counts 79,410 commercial meters at Central Maine Power in 2025, and 79,120 of them (more than 99%) are advanced meters (AMI), which record use at least hourly and report it to the utility at least daily. Of the rest, 290 are standard meters. An advanced meter is what makes interval data possible, and interval data is what shows when a building’s peak demand happens.

At Central Maine Power, 1,684 commercial customers were on a time-varying rate in 2025, about 2.1% of its commercial customers. A time-varying rate charges more in some hours than in others, so when a business uses power matters as well as how much. The kinds Central Maine Power reports offering commercial customers are time-of-use pricing.

EIA records 59,333 commercial net-metered generating systems at Central Maine Power in 2025, with 1,438 MW of capacity between them: about 752 for every 1,000 commercial customers. Net metering credits a customer for power its own system sends to the grid; the terms are in the utility’s tariff.

How reliable is Central Maine Power’s electric service?

Central Maine Power customers went without power for an average of 177 minutes in 2025, excluding major storms, with about 1.74 interruptions per customer. The average across U.S. utilities reporting the same way is 124 minutes. With major storms counted the figure was 318 minutes. These are averages over every customer of every class, so they describe the system and not any one street.

Where Central Maine Power serves

EIA records Central Maine Power serving customers in 14 Maine counties: Androscoggin, Cumberland, Franklin, Hancock, Kennebec, Knox, Lincoln, Oxford, Penobscot, Piscataquis, Sagadahoc, Somerset, Waldo, York. A county can be shared between utilities, so this does not tell you who serves a given address. The utility that serves an address is the one named on its bill.

EIA lists ISO New England as its balancing authority. ISO New England is one of the organised wholesale markets, which run the grid and the wholesale power market across their area.

Other utilities in Maine

The average each billed its commercial customers in 2025. The Maine page has the state’s own figures and every utility with 500 or more commercial customers.

• Versant Power (21.67¢)

What these figures can and cannot tell you

• They are averages over every commercial customer. A utility whose commercial customers are mostly large averages fewer cents per kWh than one serving mostly small shops, so a lower figure can mean larger customers and not a lower rate.
• They are not a rate schedule. None of these figures is a charge printed in Central Maine Power’s tariff, and nothing here works out a bill from one. The tariff index lists the utilities whose filed schedules are quoted on this site.
• They are annual and final. EIA publishes utility figures once a year. The Maine page carries the state’s trailing 12 months, which is more recent and still preliminary.
• Bundled and delivery-only are different customers. The two prices describe different parts of the bill and are never added together or averaged.

For one building, the cost estimator gives a range by building type, size and state, and price by utility sets every utility side by side. Commercial vs residential vs industrial compares the classes in every state.

Data: every year of these figures, for this utility and every other with a page, is in one CSV, free to use with credit to the U.S. Energy Information Administration and this site. To cite this page: Central Maine Power commercial electricity rates, CommercialElectricityRates.com, from EIA Form EIA-861 final 2025 data.

Common questions about Central Maine Power

What is the average commercial electricity rate at Central Maine Power?

Central Maine Power billed its commercial customers on bundled service in Maine an average of 23.76¢ per kWh in 2025, according to the U.S. Energy Information Administration. That is 14% above the Maine commercial average of 20.86¢. It is the utility’s commercial revenue divided by its commercial sales, so it describes the whole class and is not the rate on any one schedule.

How much is the average commercial electric bill at Central Maine Power?

About $380 a month in 2025, on average use of about 1,600 kWh a month. That is Central Maine Power’s commercial revenue divided by its 54,177 commercial customers. A few very large accounts pull the average up, so most businesses pay less than this.

Have Central Maine Power’s commercial electricity rates gone up?

The average Central Maine Power billed commercial customers rose 102% between 2015 and 2025, from 11.77¢ to 23.76¢ per kWh. The Maine commercial average rose 67% over the same period.

How reliable is Central Maine Power’s electric service?

Central Maine Power customers averaged 177 minutes without power in 2025, excluding major storms, against a 124-minute average for U.S. utilities reporting the same way (EIA).

Does Central Maine Power use smart meters for businesses?

EIA counts 79,120 advanced (AMI) meters among Central Maine Power’s 79,410 commercial meters in 2025, which is more than 99%. An advanced meter records use at least hourly, which is what makes interval data and time-varying rates possible.

Is this the rate my business will pay Central Maine Power?

No. It is an average over every commercial customer, from a corner shop to a campus. What one business pays depends on its rate schedule, how much it uses and how hard it draws at its peak. The schedule code is printed on the bill, and the schedule itself is in Central Maine Power’s tariff.