UNS Electric, Inc: power outages per year
In 2025 the average UNS Electric, Inc customer was without power for 1.4 hours, close to the Arizona average of 1.2 h; up from 1.2 h in 2024. The utility served 108,034 customers in Arizona and ranks #1 of 4 large Arizona utilities by outage hours.
By year
| Year | Hours (with major events) | Hours (without) | Interruptions | Customers |
|---|---|---|---|---|
| 2025 | 1.4 | 1.1 | 0.9 | 108,034 |
| 2024 | 1.2 | 1.0 | 0.8 | 106,739 |
| 2023 | 2.7 | 0.7 | 0.8 | 105,267 |
| 2022 | 2.6 | 1.3 | 1.3 | 104,555 |
| 2021 | 3.1 | 0.8 | 1.1 | 102,667 |
| 2020 | 0.7 | 0.0 | 0.8 | 101,032 |
"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 UNS Electric, Inc outages
An average outage here lasted about 1.4 hours in 2025. Size backup for the longest outage you want to ride through, not the average.
Other large utilities in Arizona
FAQ
How many hours a year are UNS Electric, Inc customers without power?
1.4 hours per customer in 2025 including major event days (1.1 h without them), as UNS Electric, Inc reported to the U.S. EIA.
How long does a typical UNS Electric, Inc outage last?
About 1.4 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 →