Power outage history
Anderson County Texas
14hours
without power for the average customer in a typical year, 2018–2025
85th most of 240 in Texas 2.1× 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 Anderson'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 26 hours for the average customer. Hatched years have a thin record and are left out of the averages.
Anderson, 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 |
|---|---|---|---|---|---|---|
| May 28, 2024 | No storm report | 13,340 | 46% | 4.0 d | 31 h | 285k |
| Feb 1, 2023 | Ice storm | 8,262 | 28% | 3.1 d | 46 h | 251k |
| Feb 15, 2021 | Winter storm | 8,881 | 31% | 2.1 d | 37 h | 219k |
| Jan 10, 2021 | Winter storm | 6,893 | 24% | 3.1 d | 34 h | 215k |
| Feb 17, 2021 | Winter storm | 4,184 | 14% | 3.9 d | 2.5 d | 179k |
| Apr 12, 2022 | Thunderstorms | 8,152 | 28% | 31 h | 23 h | 119k |
| May 25, 2015 | Thunderstorms | 5,659 | 20% | 2.5 d | 2.1 d | 98k |
| Apr 18, 2019 | Thunderstorms | 8,446 | 29% | 42 h | 25 h | 87k |
| Jul 8, 2024 | Hurricane Beryl | 8,245 | 28% | 35 h | 26 h | 86k |
| Aug 27, 2023 | Heat | 8,170 | 28% | 28 h | 26 h | 81k |
| Mar 4, 2025 | Thunderstorms | 6,058 | 21% | 36 h | 30 h | 59k |
| May 22, 2024 | Thunderstorms | 6,515 | 22% | 22 h | 31 h | 55k |
| May 18, 2019 | No storm report | 5,924 | 20% | 30 h | 21 h | 55k |
| Sep 24, 2023 | Thunderstorms | 4,808 | 17% | 31 h | 17 h | 52k |
| Aug 16, 2020 | Heat | 8,266 | 28% | 26 h | 17 h | 47k |
| Jun 10, 2023 | Thunderstorms | 4,598 | 16% | 26 h | 16 h | 44k |
| Apr 28, 2024 | Thunderstorms | 6,436 | 22% | 26 h | 15 h | 40k |
| May 26, 2025 | No storm report | 3,446 | 12% | 28 h | 23 h | 27k |
| Jul 10, 2019 | No storm report | 3,981 | 14% | 14 h | 8.8 h | 26k |
| May 21, 2022 | Thunderstorms | 5,298 | 18% | 20 h | 9.8 h | 24k |
| May 5, 2023 | No storm report | 4,455 | 15% | 20 h | 13 h | 22k |
| May 5, 2023 | Thunderstorms | 5,075 | 18% | 15 h | 5.8 h | 20k |
| Sep 9, 2023 | Heat | 3,507 | 12% | 17 h | 8.5 h | 17k |
| Oct 28, 2021 | No storm report | 3,592 | 12% | 16 h | 11 h | 16k |
| Oct 21, 2019 | No storm report | 2,322 | 8% | 15 h | 14 h | 15k |
| Apr 10, 2024 | No storm report | 2,067 | 7% | 12 h | 14 h | 13k |
| Jun 5, 2024 | Flooding | 1,081 | 4% | 16 h | – | 13k |
| Mar 4, 2020 | Thunderstorms | 1,589 | 5% | 19 h | 16 h | 11k |
| Oct 24, 2022 | Thunderstorms | 1,946 | 7% | 16 h | 15 h | 10k |
| Feb 11, 2021 | No storm report | 2,684 | 9% | 11 h | 10 h | 9.6k |
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 Anderson from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.
- No storm on record 34%
- Winter storm 23%
- Thunderstorms 21%
- Ice storm 9.4%
- Heat 6.8%
- Tropical storm 3.3%
- Flooding 2.2%
Who keeps the lights on
Utilities serving Anderson
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 |
|---|---|---|---|---|---|---|
| Trinity Valley Elec Coop Inc | Cooperative | 179 | 142 | 2.36 | 12.2 | 82k |
| Houston County Elec Coop Inc | Cooperative | 539 | 195 | 5.37 | 15.3 | 22k |
| 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.
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 29,000 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 →