Central Maine Power Co electricity rates

It is the dominant supplier in Maine, serving 519,295 residential customers, so its pricing effectively sets what the state average looks like. At 23.43¢ per kilowatt-hour it is one of the cheaper places to buy electricity in Maine, 18.2% under the statewide average of 28.63¢.

Its customers use very little electricity by national standards, 557 kilowatt-hours a month against 871 nationally. Dense housing, a mild climate or heating that runs on gas rather than electricity all push consumption down, and any of them can leave a household with a modest bill despite a high rate.

A shareholder-owned company whose rates are set by the state regulator, including an approved return on the capital it has invested. That matters because a bill is not only the cost of generating electricity: it also carries the cost of the network, and who owns that network changes how it is paid for.

In 2024 the average Central Maine Power Co customer went 1,894 minutes without electricity across 3.37 interruptions. The median across the 941 utilities that report this is 185 minutes.

That is far worse than typical, and figures at this level almost always reflect a major storm season rather than everyday performance. A single hurricane or ice storm can dominate the annual number.

Central Maine Power Co offers time-of-use pricing to residential customers. 4,961 households were enrolled, about 1% of its residential base.

These plans are opt-in almost everywhere. They reward households that can move laundry, dishwashing, water heating or electric vehicle charging out of the late-afternoon peak, and they cost more than the standard rate for households that cannot. How to tell which group you are in.

12,880 residential customers had net-metered solar in 2024, totalling 107.06 megawatts. That works out to 24.8 installations per thousand customers, against a median of 8 across the utilities reporting it.

Adoption is above the national median, which generally tracks the retail rate more closely than it tracks sunshine. What exports are actually worth.