Knoxville Utilities Board: power outages per year
In 2025 the average Knoxville Utilities Board customer was without power for 4.6 hours, more than the Tennessee average of 3.8 h; down from 5.9 h in 2024. The utility served 225,030 customers in Tennessee and ranks #3 of 7 large Tennessee utilities by outage hours.
By year
| Year | Hours (with major events) | Hours (without) | Interruptions | Customers |
|---|---|---|---|---|
| 2025 | 4.6 | 2.5 | 1.3 | 225,030 |
| 2024 | 5.9 | 3.2 | 1.9 | 220,632 |
| 2023 | 6.0 | 2.1 | 2.4 | 216,995 |
| 2022 | 4.2 | 1.7 | 2.2 | 213,637 |
| 2021 | 2.4 | 1.9 | — | 210,133 |
| 2020 | 4.7 | 2.1 | 2.1 | 207,360 |
"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 Knoxville Utilities Board outages
An average outage here lasted about 3.6 hours in 2025. Size backup for the longest outage you want to ride through, not the average.
Other large utilities in Tennessee
FAQ
How many hours a year are Knoxville Utilities Board customers without power?
4.6 hours per customer in 2025 including major event days (2.5 h without them), as Knoxville Utilities Board reported to the U.S. EIA.
How long does a typical Knoxville Utilities Board outage last?
About 3.6 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 →