Central Maine Power Co

What This Utility Data Tells You

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.