Power outage history
Liberty County Texas
24hours
without power for the average customer in a typical year, 2018–2025
29th most of 240 in Texas 3.6× 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 Liberty's customers who were without power at that day's worst moment.
Year by year
Hours in the dark, per customer
2024 was the worst well-recorded year, at 3.9 days for the average customer. Hatched years have a thin record and are left out of the averages.
Liberty, 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 |
|---|---|---|---|---|---|---|
| Jul 8, 2024 | Hurricane Beryl | 30,844 | 70% | 8.6 d | 6.1 d | 2.4M |
| Feb 15, 2021 | Winter storm | 28,618 | 65% | 3.7 d | 17 h | 975k |
| May 16, 2024 | Flooding | 32,796 | 74% | 3.0 d | 28 h | 935k |
| Aug 27, 2017 | Hurricane Harvey | 6,321 | 14% | 7.2 d | 5.5 d | 450k |
| May 2, 2024 | No storm report | 14,611 | 33% | 2.7 d | 9.5 h | 163k |
| Sep 13, 2021 | Hurricane Nicholas | 7,844 | 18% | 2.2 d | 27 h | 129k |
| May 26, 2016 | Flooding | 4,705 | 11% | 2.8 d | 46 h | 127k |
| Sep 19, 2019 | Tropical Storm Imelda | 6,503 | 15% | 31 h | 19 h | 118k |
| Jun 21, 2023 | No storm report | 11,269 | 26% | 29 h | 18 h | 102k |
| Aug 27, 2020 | Hurricane Laura | 12,185 | 28% | 19 h | 5.8 h | 96k |
| Apr 7, 2019 | No storm report | 9,162 | 21% | 24 h | 20 h | 73k |
| Apr 9, 2024 | No storm report | 7,451 | 17% | 25 h | 8.8 h | 58k |
| Aug 24, 2023 | Heat | 6,265 | 14% | 15 h | 6.0 h | 55k |
| May 9, 2019 | No storm report | 9,025 | 20% | 20 h | 2.0 h | 49k |
| May 28, 2024 | No storm report | 9,315 | 21% | 25 h | 23 h | 46k |
| Jan 16, 2024 | No storm report | 4,207 | 10% | 12 h | 9.5 h | 34k |
| Nov 19, 2021 | No storm report | 6,450 | 15% | 7.2 h | 2.2 h | 32k |
| Jan 3, 2018 | No storm report | 4,310 | 10% | 15 h | 14 h | 31k |
| Jun 10, 2023 | No storm report | 3,759 | 9% | 18 h | 15 h | 29k |
| Jan 18, 2021 | No storm report | 3,518 | 8% | 8.2 h | 6.5 h | 27k |
| Oct 25, 2022 | No storm report | 5,158 | 12% | 9.5 h | 7.0 h | 27k |
| Aug 11, 2015 | No storm report | 2,747 | 6% | 19 h | 17 h | 27k |
| Jan 24, 2023 | Tornadoes | 4,034 | 9% | 19 h | 9.8 h | 27k |
| May 16, 2023 | No storm report | 5,853 | 13% | 8.2 h | 4.5 h | 25k |
| Jan 8, 2022 | Flooding | 3,093 | 7% | 20 h | 16 h | 24k |
| Jan 26, 2015 | No storm report | 6,655 | 15% | 3.8 h | 1.2 h | 24k |
| Sep 4, 2017 | No storm report | 984 | 2% | 34 h | – | 23k |
| Mar 4, 2025 | No storm report | 3,754 | 9% | 11 h | 3.2 h | 22k |
| May 27, 2025 | No storm report | 2,571 | 6% | 16 h | 18 h | 21k |
| Aug 10, 2022 | No storm report | 4,931 | 11% | 17 h | 9.8 h | 20k |
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 Liberty from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.
- Tropical storm 39%
- No storm on record 30%
- Winter storm 14%
- Flooding 14%
- Thunderstorms 1.2%
- Heat 1.0%
- Tornadoes 0.9%
Who keeps the lights on
Utilities serving Liberty
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 |
|---|---|---|---|---|---|---|
| Entergy Texas Inc. | Investor Owned | 403 | 305 | 2.58 | 13.9 | 469k |
| Sam Houston Electric Coop Inc | Cooperative | 466 | 347 | – | 14.2 | 88k |
| City of Liberty | TX | – | – | – | 11.4 | 40k |
| CenterPoint Energy | Investor Owned | 193 | 151 | 1.95 | – | – |
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
- San Jacinto 37 h
- Chambers 36 h
- Montgomery 24 h
- Liberty (this county) 24 h
- Jefferson 18 h
- Polk 17 h
- Harris 16 h
- Hardin 11 h
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 44,189 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 →