Power outage history
Ellis County Texas
7.7hours
without power for the average customer in a typical year, 2018–2025
153rd 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 Ellis'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 20 hours for the average customer. Hatched years have a thin record and are left out of the averages.
Ellis, 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 14, 2021 | Winter storm | 25,236 | 31% | 5.6 d | 3.6 d | 1.3M |
| Mar 4, 2025 | No storm report | 9,645 | 12% | 39 h | 28 h | 182k |
| May 28, 2024 | Thunderstorms | 10,937 | 14% | 43 h | 37 h | 148k |
| Mar 8, 2025 | Thunderstorms | 22,117 | 27% | 31 h | 16 h | 129k |
| May 6, 2023 | No storm report | 12,939 | 16% | 20 h | 16 h | 115k |
| Oct 20, 2019 | Tornadoes | 9,923 | 12% | 21 h | 15 h | 91k |
| Jun 29, 2019 | Thunderstorms | 10,669 | 13% | 20 h | 17 h | 78k |
| Dec 22, 2022 | No storm report | 6,090 | 8% | 33 h | 27 h | 75k |
| Jun 21, 2023 | Heat | 10,167 | 13% | 20 h | 19 h | 67k |
| May 26, 2015 | Thunderstorms | 5,530 | 7% | 25 h | 16 h | 66k |
| Jun 9, 2019 | Thunderstorms | 4,271 | 5% | 27 h | 28 h | 56k |
| Aug 17, 2022 | Thunderstorms | 5,307 | 7% | 19 h | 13 h | 49k |
| Sep 24, 2023 | Thunderstorms | 6,151 | 8% | 20 h | 17 h | 49k |
| Aug 16, 2020 | Thunderstorms | 4,604 | 6% | 16 h | 15 h | 46k |
| Jul 14, 2022 | Thunderstorms | 8,532 | 11% | 12 h | 9.5 h | 45k |
| May 30, 2024 | Thunderstorms | 4,678 | 6% | 27 h | 32 h | 43k |
| Jun 11, 2023 | No storm report | 4,483 | 6% | 12 h | 21 h | 34k |
| Jan 14, 2024 | No storm report | 6,058 | 7% | 13 h | 8.0 h | 34k |
| Apr 26, 2015 | Thunderstorms | 4,495 | 6% | 15 h | 12 h | 33k |
| Oct 28, 2021 | No storm report | 5,051 | 6% | 17 h | 23 h | 31k |
| Mar 13, 2019 | Thunderstorms | 3,449 | 4% | 14 h | – | 24k |
| Feb 2, 2023 | Ice storm | 3,876 | 5% | 11 h | – | 23k |
| May 15, 2022 | No storm report | 2,710 | 3% | 10 h | – | 23k |
| Oct 4, 2023 | No storm report | 3,526 | 4% | 12 h | – | 22k |
| May 3, 2021 | Thunderstorms | 3,784 | 5% | 8.2 h | – | 19k |
| Feb 13, 2021 | Winter storm | 2,541 | 3% | 9.5 h | – | 18k |
| Sep 3, 2023 | No storm report | 2,900 | 4% | 8.8 h | – | 16k |
| Jun 22, 2021 | No storm report | 1,689 | 2% | 11 h | – | 16k |
| Oct 21, 2025 | No storm report | 3,390 | 4% | 8.5 h | – | 15k |
| Jan 17, 2018 | No storm report | 2,787 | 3% | 8.5 h | – | 14k |
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 Ellis from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.
- Winter storm 38%
- No storm on record 33%
- Thunderstorms 22%
- Heat 3.3%
- Tornadoes 3.2%
- Ice storm 0.9%
Who keeps the lights on
Utilities serving Ellis
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 |
|---|---|---|---|---|---|---|
| United Electric Coop Service Inc | Cooperative | 122 | 72 | 1.23 | 13.9 | 91k |
| HILCO Electric Cooperative, Inc. | Cooperative | 212 | 175 | 1.76 | 14.8 | 28k |
| Navarro County Elec Coop, Inc | Cooperative | – | – | – | 12.9 | 19k |
| 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 80,952 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 →