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Central Maine Power Co
Central Maine Power Co served 537,632 residential customers in Maine in 2025 (71.8% of the state's residential customers), the 1st largest of 20 utilities reporting there. Bundled service; ownership: investor owned; balancing authority ISNE.
The meter, one average month.
Scroll to run 30 days of Central Maine Power Co's average residential use through a five-dial register.
- Used so far
- 538 kWh
- At 27.41¢/kWh
- $147
Price ruler0 to 50¢ per kWh
Where 27.41¢ sits.
Central Maine Power Co averaged 27.41¢ per kWh against a Maine residential average of 27.78¢: 1.3% below the state figure. Among the 2 investor owned utilities in Maine with bundled residential sales, it ranks 1st from the lowest price.
2020 and 2025EIA-861
Five years, same meter.
In 2020 the average Central Maine Power Co home used 581 kWh a month at 16.24¢ and paid $94.42. In 2025 it used 538 kWh at 27.41¢ and paid $147: the price per kWh is up 68.7%.
| Measure | 2020 | 2025 |
|---|---|---|
| Price, ¢/kWh | 16.24 | 27.41 |
| Use, kWh a month | 581 | 538 |
| Bill, US$ a month | 94.42 | 147.32 |
| Class | Customers | MWh sold | ¢/kWh |
|---|---|---|---|
| Residential | 537,632 | 3,468,170 | 27.41 |
| Commercial | 54,177 | 1,040,137 | 23.76 |
| Industrial | 878 | 93,351 | 22.38 |
Who else is on the line
Homes are one class.
Homes took 75.4% of the electricity Central Maine Power Co sold in Maine in 2025.
Rooftop solar on its linesnet metering
16,367 roofs.
- Residential net-metered PV
- 16,367installations reported for 2025
- Capacity
- 138.9 MWresidential, net metered
- Per 1,000 homes
- 30.4installations per 1,000 residential customers
Service territoryEIA-861
14 counties.
AndroscogginCumberlandFranklinHancockKennebecKnoxLincolnOxfordPenobscotPiscataquisSagadahocSomersetWaldoYork
Counties in Maine where Central Maine Power Co reported serving customers in 2025 (14 in all; up to 24 listed).
EIA-8612025Utility 3266
The filing, line by line.
| Measure | Value | Unit |
|---|---|---|
| Average price | 27.41 | ¢/kWh |
| Maine average price | 27.78 | ¢/kWh |
| Difference from state average | -1.3 | % |
| Price change over 5 years | 68.7 | % |
| Typical monthly use | 538 | kWh |
| Typical monthly bill | 147.32 | US$ |
| Residential customers | 537,632 | accounts |
| Share of ME residential customers | 71.8 | % |
| Size rank in ME | 1 of 20 | by customers |
| Price rank, investor owned peers | 1 of 2 | 1 = lowest |
Rate plans on fileOpenEI URDB
5 active plans.
- Time-of-use
- 3more than one energy period within a month
- Seasonal only
- 0price changes by month, not by hour
- Median fixed charge
- $26.71US dollars per month
Active residential plans: not ended, started within the last 5 years, latest version of each plan name. Time-of-use means more than one energy period within a single month; plans whose price changes only by season are counted as seasonal.