Oncor Electric Delivery Company LLC: power outages per year
In 2025 the average Oncor Electric Delivery Company LLC customer was without power for 3.9 hours, close to the Texas average of 3.7 h; down from 8.9 h in 2024. The utility served 4,084,817 customers in Texas and ranks #6 of 20 large Texas utilities by outage hours.
By year
| Year | Hours (with major events) | Hours (without) | Interruptions | Customers |
|---|---|---|---|---|
| 2025 | 3.9 | 1.1 | 1.6 | 4,084,817 |
| 2024 | 8.9 | 1.1 | 1.7 | 4,013,062 |
| 2023 | 5.4 | 1.0 | 1.5 | 3,929,551 |
| 2022 | 3.9 | 1.1 | 1.6 | 3,781,870 |
| 2021 | 9.3 | 1.1 | 2.0 | 3,717,866 |
| 2020 | 8.1 | 4.0 | 3.6 | 3,694,894 |
"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 Oncor Electric Delivery Company LLC 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.
Other large utilities in Texas
FAQ
How many hours a year are Oncor Electric Delivery Company LLC customers without power?
3.9 hours per customer in 2025 including major event days (1.1 h without them), as Oncor Electric Delivery Company LLC reported to the U.S. EIA.
How long does a typical Oncor Electric Delivery Company LLC 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 →