Electricity rates — Central Maine Power Co

What a typical bill costs

At 1,000 kWh a month the 2 generally available plans here run from $1,753.13 on A-TOU Residential Service - Time-of-Use to $1,918.32 on A Residential Standard Offer Service, with a median of $1,835.73.

Effective rates, bill divided by kilowatt-hours, span 14.6¢ to 16.0¢ per kWh at that usage.

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 17.3¢ 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.

How it compares

Among the 109 utilities indexed, Central Maine Power Co's cheapest open plan is the 47th-highest, 6% more than their median of $1,649.16. It sits between PacifiCorp (Wyoming) ($1,751.88) and Duke Energy Carolinas, LLC (South Carolina) ($1,756.80).

Its fixed charge, $26.71 a month on A-TOU Residential Service - Time-of-Use, is higher than on the cheapest plan of 94 of the other 108 utilities.

A Residential Standard Offer Service is tiered: past 50 kWh a month, each kWh costs 13.6¢ more. Of the 51 utilities whose plans step, that is the largest step.

In the guides: What a bill costs before a single kilowatt-hour · The price that changes once the meter passes a line

How the answer changes with usage

A-TOU Residential Service - Time-of-Use is cheapest at every level tested — $1,036.80 a year at 500 kWh a month, $3,185.77 at 2,000 kWh.

The penalty for a poor choice grows with usage: $62.64 a year at 500 kWh against $370.19 at 2,000 kWh.

Cheapest 6 plans at 1,000 kWh a month

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 — $721.25 a year, 6.0¢ 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) — $1,239.87 a year, 10.3¢ 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.

R-TOU Retired Employee Residential Service - Time-Of-Use — $1,671.73 a year, 13.9¢ 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 Residential Service - Time-of-Use — $1,753.13 a year, 14.6¢ per kWh effective, time-of-use. It carries a $26.71 monthly standing charge. In effect since January 2026.

How these plans are structured

Of 10 priceable plans: 4 tiered, 6 time-of-use.

Fixed monthly charges run from $10.00 to $30.21.

Who provides these plans

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.

The largest saving available here

Moving from A Residential Standard Offer Service to A-TOU Residential Service - Time-of-Use saves $165.19 a year at 1,000 kWh a month, with no change in consumption.

What this does not cover

6 of these plans price by the hour, so their figures are marked lower confidence.