Power outage history
Galveston County Texas
23hours
without power for the average customer in a typical year, 2018–2025
31st most of 240 in Texas 3.5× 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 Galveston'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 3.5 days for the average customer. Hatched years have a thin record and are left out of the averages.
Galveston, 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 | 144,421 | 100% | 7.7 d | 6.2 d | 11M |
| Feb 14, 2021 | Winter storm | 144,421 | 100% | 4.1 d | 40 h | 6.5M |
| Sep 13, 2021 | Hurricane Nicholas | 57,142 | 40% | 3.9 d | 2.1 d | 1.2M |
| Jun 21, 2023 | No storm report | 28,418 | 20% | 2.1 d | 40 h | 406k |
| Dec 28, 2024 | Tornadoes | 9,404 | 7% | 45 h | 44 h | 265k |
| Sep 19, 2019 | Tropical Storm Imelda | 6,593 | 5% | 2.1 d | 39 h | 245k |
| Jun 8, 2023 | Thunderstorms | 30,412 | 21% | 28 h | 19 h | 243k |
| Jun 29, 2019 | Thunderstorms | 8,234 | 6% | 36 h | 34 h | 195k |
| Dec 22, 2022 | No storm report | 5,563 | 4% | 2.2 d | 2.4 d | 158k |
| Sep 1, 2017 | No storm report | 5,076 | 4% | 26 h | 15 h | 127k |
| Jun 7, 2021 | No storm report | 5,900 | 4% | 25 h | 27 h | 126k |
| Apr 10, 2024 | Thunderstorms | 11,176 | 8% | 19 h | 18 h | 93k |
| Jan 24, 2023 | Thunderstorms | 8,938 | 6% | 28 h | 29 h | 84k |
| Oct 25, 2022 | No storm report | 15,126 | 10% | 13 h | 8.0 h | 72k |
| Aug 10, 2022 | No storm report | 11,191 | 8% | 16 h | 16 h | 63k |
| Oct 28, 2021 | No storm report | 14,299 | 10% | 9.8 h | 5.0 h | 59k |
| Jun 10, 2023 | Thunderstorms | 9,988 | 7% | 13 h | 12 h | 57k |
| May 15, 2020 | Flooding | 7,789 | 5% | 18 h | 4.2 h | 57k |
| Apr 21, 2025 | No storm report | 8,187 | 6% | 11 h | 6.2 h | 57k |
| May 27, 2020 | Thunderstorms | 9,739 | 7% | 10 h | 8.5 h | 49k |
| Apr 11, 2022 | No storm report | 5,682 | 4% | 9.0 h | 7.0 h | 47k |
| May 18, 2021 | No storm report | 9,744 | 7% | 10 h | 10 h | 42k |
| Jun 29, 2023 | No storm report | 1,617 | 1% | 26 h | – | 40k |
| May 22, 2022 | No storm report | 8,526 | 6% | 8.5 h | 6.2 h | 39k |
| Feb 4, 2022 | No storm report | 19,225 | 13% | 4.0 h | 12 min | 39k |
| Jun 4, 2023 | No storm report | 5,469 | 4% | 11 h | 18 h | 38k |
| May 28, 2024 | Thunderstorms | 10,008 | 7% | 7.8 h | 6.8 h | 38k |
| Aug 8, 2017 | No storm report | 4,762 | 3% | 7.8 h | – | 36k |
| Apr 29, 2020 | No storm report | 7,789 | 5% | 8.0 h | 5.0 h | 35k |
| Aug 27, 2020 | Hurricane Laura | 5,328 | 4% | 6.5 h | 2.8 h | 34k |
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 Galveston from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.
- Tropical storm 55%
- Winter storm 28%
- No storm on record 11%
- Thunderstorms 4.1%
- Tornadoes 1.2%
- Flooding 0.5%
Who keeps the lights on
Utilities serving Galveston
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 |
| Texas-New Mexico Power Co | Investor Owned | 165 | 119 | 1.50 | – | – |
| 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
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 144,421 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 →