Maine · Investor Owned

Central Maine Power Co Electricity Rates

Average residential price, customers served and derived annual usage from EIA Form 861, 2024 release.

23.43¢
Avg residential price / kWh
519.3K
Residential customers
-2.9%
vs Maine average
$1,567
Implied avg annual bill

Central Maine Power Co charged an average of 23.43¢ per kWh to residential customers in 2024 - close to the Maine average and far above the US average.

Central Maine Power Co is investor owned - a shareholder-owned company whose retail rates are set through a state regulatory commission. Its reported average residential price is close to the Maine customer-weighted average (-2.9%). Its customers used below the national residential norm at about 6,686 kWh a year each.

How this price compares

Ranked by price against the 8 utilities reporting residential rates in Maine, Central Maine Power Co comes 5th of 8. The state's range runs from Houlton Water Company at 11.95¢ to Palmetto Solar, LLC at 41.57¢, so where a household sits inside Maine depends far more on which utility serves it than on the statewide average alone.

Against the 1 other investor owned utilities reporting in Maine, which averaged 28.08¢, Central Maine Power Co is below its own ownership class within the state (-16.5%).

All figures come from the 2024 release, so no comparison mixes vintages. The state figure is customer-weighted across 8 reporting utilities.

Where Central Maine Power Co sits among Maine utilities

2024 average residential price across the 8 utilities reporting a rate in Maine

23.43¢/kWh 43rd affordability percentile More affordable than 43% of 7 other utilities

Central Maine Power Co

average residential price, equal-width bands

Each bar spans 2¢/kWh. Taller bars contain more utilities; the dashed marker locates this utility. Hover, focus or tap a bar for its exact count and share.

Source EIA Form 861 · 2024

Central Maine Power Co average residential price against three benchmarks, 2024
BenchmarkPrice / kWhDifference
Central Maine Power Co 23.43¢ -
Maine (customer-weighted, 8 utilities) 24.14¢ -2.9%
United States average 16.48¢ +42.2%
Investor Owned utilities nationally (183) 17.36¢ +35.0%

Rate against consumption: Maine utilities

Each dot is one of the 8 Maine utilities reporting both a residential price and residential sales in 2024, placed by its rank percentile within that group rather than its raw value, so one very large utility cannot flatten the rest. Bubble size follows customers served, rank-scaled so a utility with millions of customers cannot swamp the rest. Central Maine Power Co is highlighted. In Maine the cheapest rate belongs to Houlton Water Company (11.95¢) while the smallest implied annual bill belongs to Eastern Maine Electric Coop ($1,030) - a household's bill is price multiplied by consumption, so the two rankings are different lists. 2×2 strategic matrix plotting 8 entities by Price rank percentile (100 = most expensive in state) (X) and Consumption rank percentile (100 = heaviest use) (Y), with a crosshair dividing the plot into four quadrants. Costly rate, heavy useCheaper rate, heavy useCostly rate, light useCheaper rate, light use -50050100150 -50050100150 Price rank percentile (100 = most expensive in state) Consumption rank percentile (100 = heaviest use) Central Maine Power CoVersant PowerEastern Maine Electric CoopHoulton Water CompanyTown of Madison - (ME)EverBright, LLCSunnovaPalmetto Solar, LLC
Each dot is one of the 8 Maine utilities reporting both a residential price and residential sales in 2024, placed by its rank percentile within that group rather than its raw value, so one very large utility cannot flatten the rest. Bubble size follows customers served, rank-scaled so a utility with millions of customers cannot swamp the rest. Central Maine Power Co is highlighted. In Maine the cheapest rate belongs to Houlton Water Company (11.95¢) while the smallest implied annual bill belongs to Eastern Maine Electric Coop ($1,030) - a household's bill is price multiplied by consumption, so the two rankings are different lists.

Scale and consumption

Central Maine Power Co reported 519.3K residential customers, ranking 1st of 8 utilities in Maine by customers served and covering 77.8% of the state's reported residential customers.

Dividing reported residential sales by customers served gives about 6,686 kWh per customer per year - below the national residential norm, implying a typical annual bill near $1,567.

Within Maine the median reporting utility sells about 8,063 kWh per customer, so Central Maine Power Co customers use -17.1% against their own state's middle. Consumption this light usually tracks denser housing, gas heating or a milder service territory, which softens the bill impact of a high per-kWh price.

Every utility reporting in Maine

All 8 utilities reporting bundled residential service in Maine, largest first, with Central Maine Power Co marked. The named companies either side of it are the ones a household in this state might otherwise be served by.

Residential utilities in Maine, 2024, ranked by customers served
Utility Ownership Customers Avg ¢/kWh
Central Maine Power Co (this page) Investor Owned 519.3K 23.43¢
Versant Power Investor Owned 130.6K 28.08¢
Eastern Maine Electric Coop Cooperative 10.8K 17.06¢
Houlton Water Company Municipal 3.9K 11.95¢
Town of Madison - (ME) Municipal 2.4K 15.16¢
EverBright, LLC Behind the Meter 504 18.87¢
Sunnova Behind the Meter 80 24.38¢
Palmetto Solar, LLC Behind the Meter 8 41.57¢

For generation mix and price history statewide, see electricity rates in Maine.

Common questions about Central Maine Power Co rates

How much does Central Maine Power Co charge per kWh?
Central Maine Power Co reported an average residential price of 23.43¢ per kWh across its bundled residential customers in the 2024 EIA Form 861 release. That is an annual average across all its residential customers, not a rate schedule, so an individual bill depends on the tariff, usage pattern and season.
Is Central Maine Power Co expensive compared with the rest of Maine?
Its average residential price is close to the Maine customer-weighted average of 24.14¢ per kWh, a difference of -2.9%. The state figure is weighted by customers across the 8 utilities reporting residential service in Maine.
What is the average electricity bill for Central Maine Power Co customers?
Dividing reported residential sales by residential customers gives about 6,686 kWh per customer per year. At the reported average price that implies roughly $1,567 a year, or about $131 a month. This is RateWatt's arithmetic on two EIA columns, not a figure EIA publishes.
Who owns Central Maine Power Co?
EIA classifies Central Maine Power Co as Investor Owned, a shareholder-owned company whose retail rates are set through a state regulatory commission. Nationally, Investor Owned utilities averaged 17.36¢ per kWh in the 2024 release.

What this page does and does not tell you

  • An average across bundled residential customers for the year, revenue divided by sales, not a rate schedule.
  • Form 861 presence is not evidence of availability at an address or of customer choice.

See our methodology, why energy prices vary and understanding rate structures.

Source: U.S. Energy Information Administration (EIA), Form 861 annual electric power industry report, 2024 release. Retrieved and formatted by RateWatt.

Disclaimer: This information is provided for informational purposes only and does not constitute professional or financial advice. Data is sourced from the U.S. Energy Information Administration (EIA). Rates change and averages do not describe any individual account. Consult your utility or a qualified professional before making decisions based on this data.

Every figure on RateWatt is rendered directly from official U.S. Energy Information Administration (EIA) data, no number is typed in by an editor. Average price, customers and sales are reported by EIA Form 861 (2024). Per-customer annual usage, the implied annual bill, the customer-weighted state average and every percentage difference are RateWatt's arithmetic on those reported columns. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2025.