27.41¢
per kWh, 2025
[ Central Maine Power / ME ]
Central Maine Power electricity rates in Maine
NO RATE CASE ON FILE · DATA 2025
change in average rate, 2024→2025
+17.0%
vs 2024
584,462
residential customers
+68.8%
since 2020
What your bill becomes
Bill today
No change on file
Difference / month · / year
Estimated at Central Maine Power's average effective residential rate (27.41¢/kWh, EIA, all charges included). Your tariff, fees and taxes differ.
Rate history 2015–2025
| Year | ¢/kWh | Change | Customers |
|---|---|---|---|
| 2015 | 14.61¢ | — | 541,351 |
| 2016 | 14.62¢ | +0.1% | 540,499 |
| 2017 | 15.08¢ | +3.1% | 549,555 |
| 2018 | 16.16¢ | +7.2% | 550,974 |
| 2019 | 17.32¢ | +7.2% | 551,512 |
| 2020 | 16.24¢ | −6.2% | 557,067 |
| 2021 | 16.46¢ | +1.4% | 560,186 |
| 2022 | 22.37¢ | +35.9% | 565,172 |
| 2023 | 27.45¢ | +22.7% | 567,972 |
| 2024 | 23.43¢ | −14.6% | 577,955 |
| 2025 | 27.41¢ | +17.0% | 584,462 |
How this compares
27.69¢
Maine average, 2025
−1.0%
Central Maine Power vs ME 2025 average
+59.1%
vs US 2025 average
#2
priciest in ME
Central Maine Power files with the EIA as Central Maine Power Co (utility ID 3266).
Serves 14 counties in Maine: Androscoggin, Cumberland, Franklin, Hancock, Kennebec, Knox, Lincoln, Oxford, Penobscot, Piscataquis, Sagadahoc, Somerset, Waldo, York. 338 ZIP codes.
Questions
Is Central Maine Power raising rates in 2026?
No rate case for Central Maine Power is on file with the Maine Public Utilities Commission in our tracker. Its average residential rate moved +17.0% from 2024 to 2025. We check the commission docket monthly.
What does Central Maine Power charge per kWh?
Central Maine Power's average effective residential rate was 27.41¢ per kWh in 2025 (EIA-861, revenue divided by sales, all charges included). Maine's 2025 average was 27.69¢.
How much have Central Maine Power rates gone up in five years?
+68.8% between 2020 and 2025, against +98.0% for Maine as a whole over the latest five-year window.
How many customers does Central Maine Power have in Maine?
584,462 residential customers in 2025, across 14 counties including Androscoggin, Cumberland, Franklin, according to the EIA-861 survey.
Where do these numbers come from?
Rates and customer counts are from the US Energy Information Administration's annual EIA-861 survey; rate-case facts are from the Maine Public Utilities Commission docket linked on this page. Nothing here is a utility bill; use it to understand the direction and size of changes.
Sources
- EIA-861 Sales to Ultimate Customers, 2015–2025 (released 2026-10-07)
- EIA-861M monthly state averages through Jul 2026
- NREL utility-by-ZIP lookup (2024)