CMP electricity rates
Central Maine Power Co, as the EIA and URDB list it
Central Maine Power Co's customers paid 23.4¢ per kWh in 2024, riders included (EIA-861): about $131 a month for 557 kWh. A Residential Standard Offer Service (Bundled), the lowest of 2 open plans at 1,000 kWh a month, comes to $3,445 a year. Schedule retrieved October 8, 2026.
Every priced Central Maine Power Co plan, 1,000 kWh/mo
| Plan | Per year | vs cheapest | Effective |
|---|---|---|---|
| A Residential Standard Offer Service (Bundled)✓ cheapesttiered · in effect since January 2026 | $3,444.84 | — | 28.7¢ |
| A-TOU Residential Service Time-of-Usetime-of-use · in effect since January 2026 | $3,521.67 | +$76.83 | 29.3¢ |
| Priced but not ranked — restricted, older, or not verifiable as a bill | |||
| R Retired Employee Residential Service Standard Offertiered · in effect since January 2018 · delivery charges only | $661.56 | −$2,783.28 | 5.5¢ |
| R-TOU Retired Employee Residential Service - Time-Of-Usetime-of-use · in effect since January 2018 · delivery charges only | $741.64 | −$2,703.20 | 6.2¢ |
| A-TOU-OPTS Residential Service - Optional Time-Of-Use (Super Saver)time-of-use · in effect since July 2022 · delivery charges only | $1,339.72 | −$2,105.12 | 11.2¢ |
| R Retired Employee Residential Service Bundled Standard Offertiered · in effect since January 2018 · older schedule, not ranked | $1,612.08 | −$1,832.76 | 13.4¢ |
| R-TOU Retired Employee Residential Service - Time-Of-Usetime-of-use · in effect since January 2018 · older schedule, not ranked | $1,692.12 | −$1,752.72 | 14.1¢ |
| A Residential Standard Offer Servicetiered · in effect since January 2026 · delivery charges only | $1,918.32 | −$1,526.52 | 16.0¢ |
| A-TOU Residential Service - Time-of-Usetime-of-use · in effect since January 2026 · delivery charges only | $1,995.15 | −$1,449.69 | 16.6¢ |
| A-TOU-OPTS Residential Service - Optional Time-Of-Use (Super Saver)time-of-use · in effect since July 2022 · older schedule, not ranked | $2,757.79 | −$687.05 | 23.0¢ |
Price Central Maine Power Co’s plans at your own usage
The cheapest Central Maine Power Co plan at each level of use
- 500 kWh/mo — cheapest $1,862.76 (A Residential Standard Offer Service (Bundled)), dearest $1,921.12, a $58.36 spread
- 1,000 kWh/mo — cheapest $3,444.84 (A Residential Standard Offer Service (Bundled)), dearest $3,521.67, a $76.83 spread
- 2,000 kWh/mo — cheapest $6,609.00 (A Residential Standard Offer Service (Bundled)), dearest $6,722.86, a $113.86 spread
What Central Maine Power Co's customers were billed in 2024
Central Maine Power Co's open plans and its customers' bills disagree by more than a quarter: at 557 kWh a month, the median plan is 31.0¢ per kWh against 23.4¢ billed in 2024. Before relying on a plan price here, test it against a real Central Maine Power Co bill in the bill analyzer.
| Ownership, as EIA classes it | Investor-owned |
|---|---|
| Full-service homes in Maine | 519,295 |
| Homes it delivers to for other suppliers | 58,660 |
| Share of Maine's households | 78% |
| Average use per home | 557 kWh a month |
| Average bill per home | $130.57 a month |
| Billed per kWh, riders included | 23.4¢ |
| Median open plan here, at that use | 31.0¢ |
Central Maine Power Co in U.S. Energy Information Administration, Form EIA-861, 2024 (Sales_Ult_Cust_2024.xlsx), retrieved September 23, 2026.
How the A Residential Standard Offer Service (Bundled) bill at 1,000 kWh has moved since 2017
Central Maine Power Co's A Residential Standard Offer Service (Bundled) cost $144.27 a month under its July 2017 version and costs $287.07 under its January 2026 one, 99% more. Its biggest single step, in July 2022, added $49.30 (30%). In Maine, EIA's average price rose 74% between 2017 and 2025.
Every version of A Residential Standard Offer Service (Bundled)
| Took effect | At 1,000 kWh | Change | Record |
|---|---|---|---|
| January 2026 | $287.07 | +$50.94 (+21.6%) | URDB |
| August 2024 | $236.13 | +$20.88 (+9.7%) | URDB |
| July 2022 | $215.25 | +$49.30 (+29.7%) | URDB |
| January 2019 | $165.95 | +$9.39 (+6.0%) | URDB |
| January 2018 | $156.56 | +$12.29 (+8.5%) | URDB |
| July 2017 | $144.27 | First on record | URDB |
In the guides: Why electricity rates change
How it compares
Among the 100 utilities indexed, Central Maine Power Co's cheapest open plan is the 9th-highest, 84% more than their median of $1,877.14. It sits between Ohio Edison Co ($3,171.48) and Long Island Power Authority ($3,512.72).
Its fixed charge, $30.21 a month on A Residential Standard Offer Service (Bundled), is higher than on the cheapest plan of 94 of the other 99 utilities.
A Residential Standard Offer Service (Bundled) is tiered: past 50 kWh a month, each kWh costs 13.6¢ more. Of the 47 utilities whose plans step, that is the 2nd-largest step.
In the guides: What a bill costs before a single kilowatt-hour · The price that changes once the meter passes a line
Cheapest 6 plans at 1,000 kWh a month
A Residential Standard Offer Service (Bundled) — $3,444.84 a year, 28.7¢ per kWh effective, tiered. It carries a $30.21 monthly standing charge. In effect since January 2026.
A-TOU Residential Service Time-of-Use — $3,521.67 a year, 29.3¢ per kWh effective, time-of-use. It carries a $26.71 monthly standing charge. In effect since January 2026.
R Retired Employee Residential Service Standard Offer — $661.56 a year, 5.5¢ per kWh effective, tiered. It carries a $10.68 monthly standing charge. In effect since January 2018. Too old to quote as a current price.
R-TOU Retired Employee Residential Service - Time-Of-Use — $741.64 a year, 6.2¢ per kWh effective, time-of-use. It carries a $10.00 monthly standing charge. In effect since January 2018. Too old to quote as a current price.
A-TOU-OPTS Residential Service - Optional Time-Of-Use (Super Saver) — $1,339.72 a year, 11.2¢ per kWh effective, time-of-use. It carries a $13.44 monthly standing charge. In effect since July 2022. Too old to quote as a current price.
R Retired Employee Residential Service Bundled Standard Offer — $1,612.08 a year, 13.4¢ per kWh effective, tiered. It carries a $10.68 monthly standing charge. In effect since January 2018. Too old to quote as a current price.
How Central Maine Power Co's plans are structured
Of 10 priceable plans: 4 tiered, 6 time-of-use.
Fixed monthly charges run from $10.00 to $30.21.
Central Maine Power Co's published schedules
EIA-861 lists Central Maine Power Co serving homes in Maine and in no other state, which is how its plans are placed there. 10 of its 10 published residential schedules can be priced.
When Central Maine Power Co's time-of-use plans charge most
A-TOU Residential Service Time-of-Use charges 63.0¢ a kWh weekdays 5 pm to 9 pm, all year, against 19.5¢ in its cheapest hours; those dearest hours are 12% of the year. Homes in Maine typically put 17% of their electricity in them (NREL ResStock).
In the guides: Time-of-use plans, hour by hour