IOU · Maine · EIA 3266
Central Maine Power Co
IOU · Maine · 567K customers. According to the U.S. Energy Information Administration's EIA Form 861, reliability for 2023 shows SAIDI 1657 minutes/customer.
Reliability verdict
Central Maine Power Co shows near-benchmark chronic reliability in 2023: 190 minutes SAIDI excluding major events (1657 minutes including them) across 567K customers.
- 1657 min
- SAIDI 2023
- 3.01
- SAIFI 2023
- 190 min
- SAIDI ex-MED
- 567K
- Customers
Chronic reliability judged on SAIDI excluding major event days when reported (IEEE 1366). Source: EIA Form 861 · August 2026.
Signature read: long interruption minutes vs the 911 utility cohort (>258 min tercile cut).
What long-outage Central Maine Power Co filings show
Central Maine Power Co is an investor-owned utility operating in Maine under EIA identifier 3266. It reports service to approximately 566,581 customer accounts and generated about $1.24 billion in annual electric revenue, with a service footprint spanning 338 ZIP codes. Investor ownership puts this utility under the regulatory authority of the state public utility commission, which reviews its rate requests and reliability record.
In 2023, the average Central Maine Power Co customer experienced 1656.5 minutes of power interruptions, a metric called SAIDI (System Average Interruption Duration Index). Excluding major weather events from that total, that sits within the 120–180 minute national benchmark range, indicating performance typical of U.S. distribution utilities. Over the same period, SAIFI (outage events per customer) was 3.01, putting the typical customer at roughly 3 distinct interruptions that year. Excluding major event days (hurricanes, ice storms), SAIDI drops to 190.3 minutes, the gap between that figure and the headline 1656.5 reveals how much weather, not day-to-day infrastructure, drove outages.
The EIA dataset includes 4 years of continuous reporting (2020–2023) for Central Maine Power Co, which lets you see whether reliability is trending up or down rather than judging from a single snapshot. SAIDI dropped from 1774.8 to 1656.5 minutes across that span, a direction regulators and prospective customers tend to watch closely.
Based on this utility's own EIA Form 861 reliability record -- baseline (major-event- excluded) outage duration, total outage duration, and outage frequency -- each benchmarked against every reporting utility nationwide. Not a measure of electricity rates or customer service, which this portal does not track.
1657 minutes per customer per year
Minutes without power per year (2023)
SAIDI by year (2020-2023)
Minutes per customer-year · EIA Form 861
Year-by-year SAIDI for Central Maine Power Co from the same EIA filings as the table below. Lower is better; major-event years can spike the headline figure.
Central Maine Power Co SAIDI trend
Central Maine Power Co vs the nationwide SAIDI distribution
Where this utility's headline SAIDI sits among every EIA Form 861 utility with a reported figure
1,657 Higher than most fewer outage minutes than 3% of 911 utilities
Utilities nationwide, banded by latest reported SAIDI (minutes)
Each bar is a band; taller bars hold more utilities. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source U.S. EIA Form 861 reliability filings · August 2026
Price vs. reliability
Where Central Maine Power Co sits on price vs. reliability
Among the 781 U.S. utilities large enough to report both revenue per customer and a recent outage record, Central Maine Power Co charges more per customer than 26% of them, and is more reliable (lower SAIDI) than 3% of them, placing it in the quadrant where it pays less and is less reliable. Revenue per customer and outage minutes are independent figures: paying more does not guarantee fewer outages.
Revenue per customer: $2,181/year · Latest SAIDI: 1656.5 minutes/year.
SAIDI 2023 breakdown: 1656.5 minutes
Reliability Trend (2020–2023)
| Year | SAIDI (min) | SAIDI nMED | SAIFI | Customers |
|---|---|---|---|---|
| 2020 | 1774.8 | 220.8 | 3.740 | 651,000 |
| 2021 | 327.0 | 219.6 | 2.480 | 655,791 |
| 2022 | 856.4 | 172.5 | 2.770 | 664,869 |
| 2023 | 1656.5 | 190.3 | 3.010 | 671,618 |
SAIDI nMED = SAIDI without major event days. Source: EIA Form 861.
Service Area
Central Maine Power Co serves 338 ZIP codes in Maine.
Frequently Asked Questions
How reliable is Central Maine Power Co?
Central Maine Power Co had a SAIDI of 1656.5 minutes in 2023 including major weather events, but 190.3 minutes excluding them (the industry-standard measure of routine reliability, so the gap traces back to a major storm that year, not a chronic issue). Excluding major storm impacts, this tracks roughly with the national average.
What type of utility is Central Maine Power Co?
Central Maine Power Co is classified as a IOU serving Maine.
How many customers does Central Maine Power Co serve?
Central Maine Power Co serves approximately 566,581 customers in Maine.
How has Central Maine Power Co's reliability changed over time?
Central Maine Power Co has 4 years of reliability data (2020-2023). This utility's SAIDI has stayed fairly flat over the period. Review the trend table above for year-by-year detail.
Utility Profile
- Type
- IOU
- State
- Maine
- Customers
- 566,581
- Annual Revenue
- $1.24B
- EIA ID
- 3266
Explore
Utilities with similar EIA profiles
Two cross-state peer sets for Central Maine Power Co. Same-state SAIDI neighbors stay in Read-with below; these neighborhoods are nearest other-state utilities with at least 10,000 reported customers.
Similar customer count
Nearest utilities by Form 861 customers (567K here), outside Maine.
Similar chronic SAIDI
Nearest utilities by latest SAIDI minutes (1656.5 here), outside Maine, excluding the customer-peer set.
Source: U.S. Energy Information Administration Form 861 annual electric power industry survey · ZIP service territory: OpenEI. Disclaimer: informational only, not professional advice. See full disclaimer · methodology.