Central Maine Power Co Electricity Rate per kWh (2024 EIA Data)

Central Maine Power Co is an investor-owned electric utility that reports to the U.S. Energy Information Administration under utility number 3266. In 2024 it served 519,295 bundled residential customers in Maine (plus 58,660 delivery-only residential accounts that buy their energy from a competitive supplier), and its average realised residential price was 23.43 cents per kWh: $814 million of residential revenue divided by 3.47 million MWh of residential sales.

Across the other sectors, Central Maine Power Co's 2024 average prices were 21.08 cents for commercial customers (52,081 accounts) and 20.36 cents for industrial customers (927 accounts). Industrial customers paid 3.07 cents less per kWh than households, a 13% discount that is typical of high-volume, high-voltage service. Maine allows retail choice, so the customer base splits two ways: 519,295 residential customers took bundled service (energy plus delivery) at 23.43 cents per kWh, while 58,660 bought their energy from a competitive supplier and paid Central Maine Power Co only for delivery, which averaged 12.92 cents per kWh for the wires portion.

Within Maine, Central Maine Power Co ranked number 1 of 5 utilities with bundled or delivery service by residential accounts served (577,955, bundled plus delivery-only) and accounted for 78.80% of the state's residential electricity sales in 2024, measured in MWh sold or delivered rather than in customers. The state-wide average realised residential price in 2024, computed from the same EIA file, was 24.29 cents per kWh, so Central Maine Power Co's customers paid 0.86 cents below the Maine average (-3.5%). For context, EIA's latest monthly figure for Maine is 29.59 cents per kWh (June 2026, Electric Power Monthly); that is a different, more recent measure across all utilities and is not directly comparable with a 2024 annual average.

EIA's service-territory file places Central Maine Power Co in 14 Maine counties: Androscoggin, Cumberland, Franklin, Hancock, Kennebec, Knox, Lincoln, Oxford, Penobscot, Piscataquis, Sagadahoc, and Somerset, and 2 more. On the grid side it operates in the NPCC NERC region and the ISO New England market, and reported transmission, buying transmission, and distribution as its activities. Balancing authority code: ISNE.

EIA's preliminary 2025 early release (published 4 August 2026) shows a residential price of 27.41 cents per kWh for Central Maine Power Co in Maine across 584,462 residential customers, 3.98 cents higher than the 2024 final figure. Early-release data has not been validated by EIA and must not be aggregated; the 2024 final figures remain the reference on this page until the 2025 final file is published.

The nearest other utilities in Maine by service-territory centroid are Town of Madison (ME) (69.8 miles away, 15.16 cents), Versant Power (79.3 miles away, 28.08 cents), Eastern Maine Electric Coop (106.6 miles away, 17.06 cents), and Houlton Water Company (160.7 miles away, 11.95 cents). Other Maine utilities of similar size include Ambit Energy Holdings, LLC (426,878 residential accounts served, 18.77 cents).