Power outage history
Travis County Texas
7.9hours
without power for the average customer in a typical year, 2018–2025
144th most of 240 in Texas 1.2× the national median
Every day since 2015
Eleven years, one night at a time
Each cell is a day. The brighter it is, the larger the share of Travis's customers who were without power at that day's worst moment.
Year by year
Hours in the dark, per customer
2021 was the worst well-recorded year, at 30 hours for the average customer. Hatched years have a thin record and are left out of the averages.
Travis, hours without power per customer
The record
The biggest outages since 2015
Ranked by customer-hours lost: customers out multiplied by how long they stayed out. Times are local.
| Began | Storm | Peak out | Share | Lasted | 90% restored | Customer-hours |
|---|---|---|---|---|---|---|
| Feb 15, 2021 | Winter storm | 273,849 | 43% | 5.4 d | 2.7 d | 17M |
| Feb 1, 2023 | Winter storm | 185,025 | 29% | 6.5 d | 5.0 d | 13M |
| May 28, 2025 | Thunderstorms | 73,455 | 11% | 48 h | 16 h | 1.2M |
| Feb 11, 2021 | Winter storm | 32,104 | 5% | 26 h | 28 h | 458k |
| May 28, 2021 | Thunderstorms | 44,840 | 7% | 23 h | 25 h | 422k |
| Aug 26, 2017 | Hurricane Harvey | 22,932 | 4% | 29 h | 36 h | 379k |
| Jun 4, 2018 | Thunderstorms | 26,434 | 4% | 16 h | 20 h | 240k |
| May 23, 2015 | Thunderstorms | 39,879 | 6% | 13 h | 18 h | 226k |
| Jan 10, 2021 | Winter storm | 33,327 | 5% | 12 h | 8.0 h | 201k |
| May 24, 2022 | Thunderstorms | 30,054 | 5% | 12 h | 14 h | 146k |
| Apr 27, 2016 | Thunderstorms | 20,348 | 3% | 9.5 h | 19 h | 121k |
| Mar 4, 2025 | Windstorm | 26,748 | 4% | 6.2 h | 6.0 h | 99k |
| Sep 24, 2023 | Thunderstorms | 18,864 | 3% | 5.2 h | 12 h | 55k |
| Jun 9, 2019 | Thunderstorms | 18,809 | 3% | 4.0 h | 8.5 h | 48k |
| Apr 28, 2024 | Thunderstorms | 22,116 | 3% | 3.5 h | 5.8 h | 44k |
| May 29, 2024 | No storm report | 20,283 | 3% | 3.0 h | 5.0 h | 43k |
| Apr 30, 2016 | Thunderstorms | 10,547 | 2% | 5.0 h | 11 h | 42k |
| Oct 27, 2021 | Thunderstorms | 15,100 | 2% | 3.2 h | 7.2 h | 38k |
| Apr 13, 2018 | Thunderstorms | 13,855 | 2% | 3.2 h | 11 h | 37k |
| Jun 21, 2023 | Heat | 12,283 | 2% | 3.2 h | 10 h | 31k |
| Jun 15, 2025 | No storm report | 13,941 | 2% | 2.8 h | 3.8 h | 29k |
| May 26, 2025 | Flooding | 13,108 | 2% | 4.2 h | 5.0 h | 29k |
| Jun 28, 2016 | No storm report | 10,879 | 2% | 4.2 h | 6.2 h | 27k |
| Nov 30, 2022 | No storm report | 18,307 | 3% | 1.5 h | 1.8 h | 26k |
| Jan 17, 2019 | No storm report | 11,586 | 2% | 2.2 h | 1.5 h | 26k |
| May 9, 2015 | No storm report | 8,413 | 1% | 2.8 h | 1.5 h | 23k |
| Oct 30, 2015 | Flooding | 12,208 | 2% | 3.0 h | 14 h | 23k |
| Jan 12, 2022 | No storm report | 16,989 | 3% | 1.5 h | 48 min | 23k |
| May 16, 2024 | Thunderstorms | 12,763 | 2% | 3.2 h | 10 h | 23k |
| May 25, 2015 | Thunderstorms | 13,993 | 2% | 1.8 h | 5.5 h | 21k |
After the peak
How fast the lights come back
Each line is one major outage, from its peak. The amber line is the typical path.
When it happens
The outage clock
Customer-hours out by month (rings, January innermost) and local hour, 2018–2025.
What was happening
Weather behind the outages
Each outage is matched to NOAA storm reports for Travis from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.
- Winter storm 91%
- Thunderstorms 7.1%
- No storm on record 1.1%
Who keeps the lights on
Utilities serving Travis
As each utility reports to the Energy Information Administration for its whole Texas territory, not this county alone. Outage minutes include major storm days.
| Utility | Type | Outage min / yr | Excl. major storms | Outages / yr | Residential ¢/kWh | Customers |
|---|---|---|---|---|---|---|
| Austin Energy | Municipal | 182 | 77 | 1.29 | 13.1 | 522k |
| Pedernales Electric Coop, Inc | Cooperative | 90 | 78 | 1.16 | 12.8 | 421k |
| Bluebonnet Electric Coop, Inc | Cooperative | 114 | 88 | 1.30 | 11.6 | 119k |
| Oncor Electric Delivery Company LLC | Investor Owned | 232 | 67 | 1.55 | – | – |
EIA Form 861, latest year each utility reported. Outage minutes are SAIDI, the yearly minutes the average customer goes without power; outages a year are SAIFI.
Next door
Neighbouring counties
About these numbers
Notes
Outages come from the EAGLE-I record of utility outage maps collected every 15 minutes by Oak Ridge National Laboratory. Hours without power are customer-hours divided by the county's 641,926 electricity customers. Averages use well-covered years from 2018. Outages shorter than 15 minutes, and utilities that publish no outage map, are not in the record, so these figures understate the total. How every number is made →