Central Maine Power Co: rates, outages and net metering

In Maine, Central Maine Power Co bills 657,328 accounts, 87.9% residential, as an investor owned utility. Businesses and industry take 56% of the 8,828,007 MWh it sells; homes take 44%.

Hydroelectric dam on the Salmon Falls River at the Maine border — Salmon Falls River dam. Photo by Fredlyfish4, CC BY-SA 4.0, Wikimedia Commons. Illustrative, not a listed utility's plant.

Central Maine Power Co: 557 kWh a month costs roughly $125 in energy at 22.37 ¢/kWh, -7.9% on the Maine average of 24.29 ¢.

Businesses and industry take 56% of the 8,828,007 MWh it sells; homes take 44%.

Who buys power from Central Maine Power Co

Business share of sales: 56%homes 44% of 8,828,007 MWh

The customer mix of Central Maine Power Co is its own: 577,955 home accounts buy 43.8% of 8,828,007 MWh, 77,668 commercial accounts buy 36.9%, and the remaining 19.4% goes to 1,705 industrial and other accounts. A typical Central Maine Power Co home uses 6,683 kWh a year, a typical business account 41,901.

How it compares

Central Maine Power Co
Central Maine Power Co, 2024	Home	Business	Bill	SAIDI
Central Maine Power CoLowest in this table	22.37 ¢/kWh	11.19 ¢/kWh	$125at 557 kWh	215 minSAIDI
Maine average against this company, which is 1 of 2 on price	+1.92 ¢/kWhcompany 7.9% below	+7.03 ¢/kWhcompany 38.6% below	+$11a month at 557 kWh	+263 mincompany 263 below
Versant Power	27.50 ¢/kWhcompany 18.7% below	18.52 ¢/kWhcompany 39.6% below	$15329 more than company	478 mincompany 263 below

Compare 5 Maine companies

Central Maine Power Co: 2025

Central Maine Power Co: +19.0% on 2024 for homes, Maine +14.4%.

Central Maine Power Co home price, 2025: 26.62 ¢/kWh+19.0% on 2024, early release
Central Maine Power Co SAIDI, 2025: 177 min-18% on 2024, early release
Central Maine Power Co against Maine, 2025: +4.6 pointsCentral Maine Power Co +19.0%, Maine +14.4%, price in Maine 27.78 ¢

Central Maine Power Co reported 26.62 ¢/kWh for homes in 2025, +19.0% on its 2024 figure of 22.37, while the Maine average moved +14.4%. Its SAIDI is 177 minutes against 215 in 2024.

Carbon context

Central Maine Power Co serves 577,955 homes in Maine. At 557 kWh a month that is about 79 kg of CO₂, or 945 kg a year, at the Maine plant rate, state generation and not this utility: Maine generation mix.

Central Maine Power Co charts

Residential price since 2015: 22.37 ¢ in 2024

12.99 ¢ in 2015, 22.37 ¢ in 2024 (+72.2%); Maine 15.61 to 24.29 ¢.

Central Maine Power Co residential price 2015-2024, 2015 to 2024: 10 rows

Year	Central Maine Power Co	Gap to Maine residential	Gap to U.S. residential
2015	12.99	-2.62	+0.34
2016	13.28	-2.55	+0.73
2017	13.90	-2.07	+1.01
2018	14.94	-1.90	+2.07
2019	16.13	-1.76	+3.12
2020	15.42	-1.39	+2.27
2021	15.81	-1.21	+2.15
2022	21.33	-1.11	+6.29
2023	25.91	-1.51	+9.91
2024	22.37	-1.92	+5.89

10 rows from EIA retail sales.

CSV

Central Maine Power Co SAIDI, 2015-2024

172 min in 2015, 215 in 2024.

Central Maine Power Co SAIDI by year, 2015 to 2024: 10 rows

Year	Central Maine Power Co, no major events
2015	172
2016	199
2017	202
2018	236
2019	190
2020	221
2021	220
2022	172
2023	190
2024	215

10 rows from EIA-861 survey.

CSV

Reliability: SAIDI 215.4 min

215.4 min, 2.17x the median reporter, rank 549 of 673.

min

Company, no major events215.4
Company, with major events1,893.5

Central Maine Power Co, Reliability: EIA-861 survey.

CSV

Analyst note

From 12.99 ¢ in 2015 to 22.37 ¢ in 2024, a move of +72.2%: Central Maine Power Co outpaced its state (+55.6%) by 16.6 points, and +42.0 points against the U.S. Central Maine Power Co's sharpest move came in 2022, +34.9%. The high is 25.91 ¢ (2023) and the low 12.99 ¢ (2015). 2024: -13.6% here, -11.4% for the Maine average. SAIDI at Central Maine Power Co (major events excluded) rose from 172 minutes in 2015 to 215 in 2024, +26%; worst year 2018 at 236. Against the national median, Central Maine Power Co came in lower on SAIDI in 0 of 10 years, and 2024 ended at 215 minutes, +116 from the median. 2017: 2693 minutes with major events, 202 without, the widest gap of any year. Central Maine Power Co has 0 cheaper and 1 higher-priced Maine peers among 2 with 20,000+ homes. Next higher-priced, Versant Power, bills 27.50 ¢ (+5.13).

Cheaper by 7.9% than Maine, slower to restore: 215 minutes is 2.2 times the national median.

Home accounts at Central Maine Power Co went from 541,351 in 2015 to 577,955 in 2024, +6.8%. Business customers paid 0.50 times the home price in 2024 (11.19 against 22.37 ¢); the ratio was 0.53 in 2015. SAIFI went from 1.57 in 2015 to 1.83 in 2024, between 1.53 and 2.04.

Outages and home price of Central Maine Power Co (EIA utility 3266), 2013 to 2024

Central Maine Power Co outage time held near 218 to 215 minutes a customer from 2013 to 2024 (−1%). Its best year was 2015 (172 min), its worst 2018 (236 min), across 12 filed years. Against a Maine median of 478 minutes in 2024, Central Maine Power Co was below the middle.

Corrected for inflation, a Central Maine Power Co home paid 22.96 ¢/kWh in 2024 against 10.12 ¢ in 2013, +126.8%; the bill itself went 7.33 ¢ to 22.37 ¢ (+205.4%). A home using 1,000 kWh a month paid $1,215 for the year at the 2013 real price and $2,755 at the 2024 price. Place on home price: 2nd cheapest of 9 in 2013, 5th of 6 in 2024 among Maine utilities with 1,000+ homes.

Central Maine Power Co outage minutes a customer, 2013 to 2024: 215 in 2024

Central Maine Power Co at 215 min in 2024 and the Maine median at 478.

Central Maine Power Co home price since 2013: +126.8% after inflation

Central Maine Power Co: 22.96 ¢ in 2025 dollars (solid) and 22.37 ¢ as billed (dashed) in 2024.

Central Maine Power Co, EIA utility 3266, year by year among Maine utilities

Central Maine Power Co 2013-2024: 12 rows

Year, Central Maine Powe	¢ billed	¢ in 2025 $	Price place, Central Maine	SAIDI min	SAIFI	SAIDI place, Central Maine	Maine median SAIDI
2013	7.33	10.12	2 of 9	218	1.74	–	274
2014	7.57	10.29	2 of 8	197	1.80	–	354
2015	12.99	17.64	3 of 8	172	1.57	–	280
2016	13.28	17.82	3 of 8	199	1.76	–	493
2017	13.90	18.26	4 of 8	202	1.81	–	341
2018	14.94	19.15	4 of 8	236	1.85	–	397
2019	16.13	20.32	5 of 8	190	1.53	–	213
2020	15.42	19.18	2 of 6	221	2.04	–	319
2021	15.81	18.78	4 of 6	220	2.04	–	220
2022	21.33	23.47	5 of 6	172	1.71	–	326
2023	25.91	27.37	5 of 6	190	1.82	–	303
2024	22.37	22.96	5 of 6	215	1.83	–	478

Central Maine Power Co, EIA utility 3266: EIA-861, CPI-U.

CSV

SAIDI explained, Maine real prices.

Facts

Customer accounts: 657,32876.8% of Maine total
Residential accounts: 577,95577.8% of Maine homes
Commercial accounts: 77,66811.8% of the base
Residential rate: 22.37 ¢/kWhplace 1 of 2, -7.9% against the state
Commercial rate: 11.19 ¢/kWhplace 1 of 4, -38.6% against the state
SAIDI, no major events: 215.4 minbetter than 19% of reporters
SAIFI, no major events: 1.831.81x the median
SAIDI with major events: 1893.5 min88.6% from event days
Net-metered capacity: 1,454.6 MW69,229 installations
Counties served: 14all in Maine
Average residential use: 6,683 kWh/yr557 a month
Implied monthly bill: $125+$33 on the U.S. rate, 557 kWh
Residential rate since 2015: +72.2%12.99 to 22.37 ¢/kWh
SAIDI trend: +26%172 min in 2015, 215 in 2024

Data tables

2024 by sector, Central Maine Power Co

Central Maine Power Co sector	Accounts	Rate ¢/kWh	Gap to Maine ¢/kWh
Residential	577,955	22.37	-1.92
Commercial	77,668	11.19	-7.03

Year by year, Central Maine Power Co

Year	Home accounts, Central Maine Power Co	Home ¢	Business ¢	Ratio	SAIDI	SAIFI
2015	541,351	12.99	6.84	0.53	172	1.57
2016	540,499	13.28	7.03	0.53	199	1.76
2017	549,555	13.90	7.68	0.55	202	1.81
2018	550,974	14.94	7.69	0.51	236	1.85
2019	551,512	16.13	8.29	0.51	190	1.53
2020	557,067	15.42	8.05	0.52	221	2.04
2021	560,186	15.81	8.32	0.53	220	2.04
2022	565,172	21.33	10.67	0.50	172	1.71
2023	567,972	25.91	12.06	0.47	190	1.82
2024	577,955	22.37	11.19	0.50	215	1.83

Peers of Central Maine Power Co in Maine, place 1 of 2 on home price

Utility near Central Maine Power Co on price	SAIDI min, gap to Central Maine Power Co	Home ¢, gap to Central Maine Power Co	Gap % to Central Maine Power Co	Accounts, Central Maine Power Co = 1
1. Central Maine Power Co (this utility)	215	22.37	-	1.00
2. Versant Power	+263	+5.13	+22.9%	0.25

Who buys Central Maine Power Co's electricity

Class at Central Maine Power Co	Accounts	Of Central Maine Power Co accounts	Of Central Maine Power Co MWh sold	kWh a year per Central Maine Power Co account
Residential	577,955	87.9%	43.8%	6,683
Commercial	77,668	11.8%	36.9%	41,901
Industrial and other	1,705	0.26%	19.4%	1,003,569

Central Maine Power Co among Avangrid group

Central Maine Power Co and its neighbours on price	SAIDI min, gap to Central Maine Power Co	Home ¢, gap to Central Maine Power Co	Accounts, Central Maine Power Co = 1
1. Central Maine Power Co (ME, this utility)	215	22.37	1.00
2. United Illuminating Co (CT)	-166	+8.69	0.53

Central Maine Power Co: meters, rate options and solar

Measure	Central Maine Power Co	Maine context	Central Maine Power Co detail
Central Maine Power Co home meters on AMI	99.5%	Maine 97.6%	591,772 of 594,931 meters
Time-of-use rate for Central Maine Power Co homes	Offered	1 of 6 Maine utilities offer one	4,961 homes on dynamic pricing, 0.86% of 577,955
Net-metered installations	69,229	19% residential	22.6 homes per 1,000 accounts, 21.0 kW average

Monthly energy cost by use, Central Maine Power Co

kWh	Share of a 557 kWh month	Cost a month at 22.37 ¢	vs U.S.	Cost a year
250	45%	$55.93	+$14.73	$671
500	90%	$111.85	+$29.45	$1,342
750	135%	$167.78	+$44.18	$2,013
1,000	180%	$223.71	+$58.91	$2,685
1,500	269%	$335.56	+$88.36	$4,027
2,000	359%	$447.42	+$117.82	$5,369

Outage record, Central Maine Power Co

Measure, Central Maine Power	No events	All events	Converted
SAIDI minutes	215.4	1893.5	3.59 h
SAIFI interruptions	1.830	3.370	0.55 yr apart
CAIDI minutes	117.7	561.9	1.96 h

Territory of Central Maine Power Co

14 Maine counties, region NPCC:

Maine other states: 14 of 14 counties of Central Maine Power Co drawn

Central Maine Power Co: 14 counties listed by EIA-861, Census 2023 outlines.

CSV

County list

Androscoggin
Cumberland
Franklin
Hancock
Kennebec
Knox
Lincoln
Oxford
Penobscot
Piscataquis
Sagadahoc
Somerset
Waldo
York

Questions on Central Maine Power Co

How many customers does Central Maine Power Co serve in Maine?

657,328 accounts in 2024: residential 577,955, commercial 77,668, industrial 1,705.

What is the average residential rate of Central Maine Power Co?

In 2024 homes paid 22.37 cents; against the Maine average that is -7.9%.

How reliable is Central Maine Power Co by SAIDI and SAIFI?

SAIDI 215.4 min and SAIFI 1.83 a year, major events excluded; ratio to the national median 2.17, CAIDI 118 min.

How much solar net metering is on the Central Maine Power Co grid?

69,229 installations with 1,454.6 MW, of which residential installations number 13,076.

What is the monthly bill at Central Maine Power Co for average use?

557 kWh at 22.37 cents comes to about $125, energy only.

How does Central Maine Power Co rank on price within Maine?

Rank 1 of 2 in Maine on price, -7.9% against the state average; 0 charge less than 22.37 ¢.

What share of Central Maine Power Co sales do homes buy?

Homes take 43.8% of 8,828,007 MWh, commercial accounts 36.9%, industrial and other 19.4%; the 77,668 commercial accounts use 41,901 kWh each, 6.3 times a home.

At Central Maine Power Co, are smart meters in homes, with a TOU option?

591,772 of 594,931 home meters are AMI, 99.5%. Central Maine Power Co offers a home time-of-use rate; 4,961 customers use dynamic pricing, 0.86% of its homes.

Has Central Maine Power Co moved up the Maine price list since 2015?

1st cheapest of 2 in 2015, 1st of 2 in 2024; its price rose 72.2% while Maine rose 55.6%.

What did Central Maine Power Co charge homes in 2025?

26.62 cents per kWh, +19.0% on the 22.37 of 2024 (EIA early release for 2025).

Utilities with a similar home price

Home prices nearest to Central Maine Power Co at 22.37 ¢/kWh in 2024, among companies with a page here, any state.

Atlantic City Electric CoNew Jersey, 22.57 ¢/kWh, 0.20 ¢ above
Green Mountain Power CorpVermont, 22.09 ¢/kWh, 0.28 ¢ below
Modesto Irrigation DistrictCalifornia, 21.78 ¢/kWh, 0.59 ¢ below
Alameda Municipal PowerCalifornia, 22.98 ¢/kWh, 0.61 ¢ above

Rate plans on file

10 home plan records, energy charges: 3.5 to 63.0 ¢/kWh.

Time-of-use: 6, e.g. R-TOU Retired Employee Residential Service - Time-Of-Use
Tiered: 4, e.g. R Retired Employee Residential Service Bundled Standard Offer

Who offers time-of-use and tiered rates (17 Apr 2026 snapshot).

Primary sources for Central Maine Power Co: rates, outages and net metering

EIA-861 annual report entry for Central Maine Power Co: rates, outages and net metering, customers and sales
EIA-861 form instructions for Central Maine Power Co: rates, outages and net metering, how a customer is counted
EIA state profiles for Central Maine Power Co: rates, outages and net metering, the state price average