Green Mountain Power Corp: power outages per year
In 2025 the average Green Mountain Power Corp customer was without power for 4.4 hours, close to the Vermont average of 4.4 h; down from 11.1 h in 2024. The utility served 276,985 customers in Vermont and ranks #1 of 1 large Vermont utilities by outage hours.
By year
| Year | Hours (with major events) | Hours (without) | Interruptions | Customers |
|---|---|---|---|---|
| 2025 | 4.4 | 3.2 | 1.8 | 276,985 |
| 2024 | 11.1 | 4.7 | 2.5 | 275,233 |
| 2023 | 13.0 | 3.7 | 2.5 | 273,284 |
| 2022 | 16.2 | 4.7 | 2.8 | 271,699 |
| 2021 | 5.5 | 4.5 | 2.3 | 270,676 |
| 2020 | 4.5 | 4.5 | 2.0 | 267,566 |
"With major events" includes storm days that utilities may exclude from their own reliability targets; it is what customers actually live through. The gap between the two columns shows how much of the year's outage time came from big storms.
Backup power for Green Mountain Power Corp outages
An average outage here lasted about 2.5 hours in 2025. Size backup for the longest outage you want to ride through, not the average.
FAQ
How many hours a year are Green Mountain Power Corp customers without power?
4.4 hours per customer in 2025 including major event days (3.2 h without them), as Green Mountain Power Corp reported to the U.S. EIA.
How long does a typical Green Mountain Power Corp outage last?
About 2.5 hours on average in 2025 (total outage minutes divided by the number of interruptions). Storms make single events much longer.
Source: U.S. EIA Form 861, Reliability file, 2020–2025. Data snapshot . Utilities ranked nationwide →