Power outage history
Sioux County Nebraska
12hours
without power for the average customer in a typical year, 2018–2025
1.8× 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 Sioux'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 28 hours for the average customer. Hatched years have a thin record and are left out of the averages.
Sioux, 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 |
|---|---|---|---|---|---|---|
| Jun 20, 2024 | Thunderstorms | 660 | 100% | 33 h | 24 h | 12k |
| May 18, 2025 | No storm report | 660 | 100% | 9.5 h | 9.5 h | 2.7k |
| Jun 17, 2025 | No storm report | 560 | 85% | 3.8 h | 3.8 h | 1.5k |
| Apr 6, 2024 | Winter storm | 194 | 29% | 16 h | 4.0 h | 1.2k |
| Apr 22, 2022 | No storm report | 398 | 60% | 4.8 h | 48 min | 932 |
| Jul 3, 2022 | No storm report | 188 | 28% | 7.2 h | 2.8 h | 697 |
| Jun 22, 2024 | No storm report | 53 | 8% | 14 h | 16 h | 568 |
| Oct 13, 2021 | Winter storm | 118 | 18% | 9.2 h | 3.5 h | 556 |
| Jul 12, 2024 | No storm report | 412 | 62% | 1.2 h | 1.2 h | 515 |
| Oct 13, 2024 | No storm report | 82 | 12% | 6.2 h | 6.2 h | 506 |
| Jul 14, 2025 | No storm report | 223 | 34% | 2.5 h | 7.0 h | 467 |
| Jun 9, 2025 | No storm report | 224 | 34% | 2.0 h | 2.0 h | 448 |
| Apr 28, 2025 | No storm report | 546 | 83% | 48 min | 48 min | 410 |
| Dec 15, 2021 | Windstorm | 53 | 8% | 7.5 h | 8.2 h | 384 |
| Jun 12, 2025 | No storm report | 271 | 41% | 1.5 h | 1.5 h | 383 |
| Apr 9, 2025 | No storm report | 274 | 42% | 3.5 h | 4.8 h | 367 |
| Jun 26, 2024 | No storm report | 288 | 44% | 1.2 h | 1.2 h | 360 |
| Nov 8, 2024 | No storm report | 660 | 100% | 2.0 h | 30 min | 359 |
| Feb 27, 2025 | No storm report | 271 | 41% | 1.2 h | 1.2 h | 339 |
| May 16, 2024 | No storm report | 660 | 100% | 30 min | 30 min | 330 |
| May 9, 2023 | No storm report | 115 | 17% | 2.5 h | 5.8 h | 288 |
| Mar 14, 2021 | Winter storm | 125 | 19% | 3.5 h | 1.8 h | 250 |
| Feb 16, 2021 | No storm report | 187 | 28% | 1.8 h | 1.0 h | 227 |
| Jan 13, 2021 | Windstorm | 114 | 17% | 3.0 h | 2.2 h | 194 |
| Jun 23, 2023 | No storm report | 164 | 25% | 4.0 h | 12 min | 190 |
| Sep 30, 2024 | No storm report | 123 | 19% | 1.5 h | 1.5 h | 184 |
| Jul 18, 2025 | No storm report | 63 | 10% | 3.2 h | 3.2 h | 180 |
| Aug 22, 2025 | No storm report | 116 | 18% | 1.5 h | 1.5 h | 174 |
| Jul 11, 2022 | No storm report | 115 | 17% | 2.5 h | 12 min | 158 |
| Apr 29, 2025 | No storm report | 33 | 5% | 4.0 h | 6.8 h | 132 |
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 Sioux from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.
- No storm on record 49%
- Thunderstorms 42%
- Winter storm 7.2%
- Windstorm 2.1%
Who keeps the lights on
Utilities serving Sioux
As each utility reports to the Energy Information Administration for its whole Nebraska territory, not this county alone. Outage minutes include major storm days.
| Utility | Type | Outage min / yr | Excl. major storms | Outages / yr | Residential ¢/kWh | Customers |
|---|---|---|---|---|---|---|
| Nebraska Public Power District | Political Subdivision | 195 | 77 | 0.90 | 10.9 | 74k |
| Roosevelt Public Power Dist | NE | – | – | – | 12.6 | 32k |
| Panhandle Rural El Member Assn | NE | – | – | – | 14.0 | 31k |
| Northwest Rural Pub Pwr Dist | NE | 419 | 280 | 2.42 | 14.2 | 26k |
| Chimney Rock Public Power Dist | NE | – | – | – | 14.1 | 24k |
| Village of Morrill | NE | – | – | – | – | 6.7k |
| Niobrara Electric Assn, Inc | WY | – | – | – | – | 4.9k |
| Wyrulec Company | WY | 904 | 354 | 4.45 | 14.7 | 2.9k |
| WAPA-- Western Area Power Administration | Federal | – | – | – | – | – |
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
- Sioux (this county) 12 h
- Fall River, SD 6.1 h
- Niobrara, WY 3.8 h
- Dawes 1.5 h
- Scotts Bluff 0.7 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 660 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 →