Power outage history
Apache County Arizona
1.8hours
without power for the average customer in a typical year, 2018–2025
4th most of 11 in Arizona 72% below 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 Apache's customers who were without power at that day's worst moment.
Year by year
Hours in the dark, per customer
2025 was the worst well-recorded year, at 8.5 hours for the average customer. Hatched years have a thin record and are left out of the averages.
Apache, 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 13, 2025 | Windstorm | 1,460 | 5% | 6.2 d | – | 190k |
| Dec 22, 2023 | Winter storm | 4,284 | 14% | 28 h | 1.0 h | 24k |
| Jul 16, 2021 | No storm report | 2,213 | 7% | 9.2 h | 4.5 h | 20k |
| Nov 3, 2024 | Winter storm | 2,108 | 7% | 17 h | 14 h | 13k |
| Nov 30, 2025 | No storm report | 2,623 | 9% | 4.0 h | 3.5 h | 9.1k |
| Sep 1, 2023 | No storm report | 2,659 | 9% | 3.2 h | 3.2 h | 8.6k |
| Apr 1, 2025 | Windstorm | 5,562 | 19% | 1.5 h | 1.0 h | 6.9k |
| Jun 2, 2025 | No storm report | 3,258 | 11% | 2.0 h | 2.0 h | 6.5k |
| Sep 12, 2023 | No storm report | 1,386 | 5% | 6.0 h | – | 6.3k |
| Mar 25, 2025 | No storm report | 5,228 | 18% | 1.5 h | 9.0 h | 6.2k |
| Jun 19, 2022 | No storm report | 1,247 | 4% | 4.2 h | – | 5.2k |
| Nov 20, 2019 | Winter storm | 940 | 3% | 8.8 h | – | 4.9k |
| Mar 14, 2024 | Winter storm | 1,373 | 5% | 3.2 h | – | 3.9k |
| Jul 10, 2025 | No storm report | 1,032 | 3% | 3.8 h | – | 3.5k |
| Feb 14, 2021 | Winter storm | 432 | 1% | 8.2 h | – | 3.3k |
| Apr 19, 2025 | Winter storm | 578 | 2% | 8.5 h | – | 3.3k |
| Mar 16, 2024 | No storm report | 1,386 | 5% | 2.5 h | – | 3.2k |
| Aug 13, 2017 | No storm report | 901 | 3% | 3.2 h | – | 2.9k |
| Jun 6, 2020 | Windstorm | 1,177 | 4% | 2.5 h | – | 2.9k |
| May 7, 2019 | No storm report | 3,958 | 13% | 30 min | 30 min | 2.0k |
| Oct 31, 2024 | No storm report | 908 | 3% | 2.2 h | – | 1.8k |
| Jan 10, 2018 | No storm report | 360 | 1% | 5.2 h | – | 1.8k |
| Sep 23, 2018 | No storm report | 1,018 | 3% | 1.8 h | – | 1.8k |
| Nov 29, 2021 | No storm report | 1,183 | 4% | 1.5 h | – | 1.8k |
| Apr 20, 2015 | No storm report | 1,701 | 6% | 1.5 h | 1.2 h | 1.8k |
| Jul 17, 2025 | No storm report | 2,736 | 9% | 48 min | 3.5 h | 1.6k |
| May 6, 2019 | No storm report | 2,612 | 9% | 30 min | 2.0 h | 1.3k |
| May 7, 2025 | No storm report | 1,258 | 4% | 1.0 h | – | 1.3k |
| Aug 16, 2018 | No storm report | 1,172 | 4% | 1.0 h | – | 1.2k |
| Sep 22, 2025 | No storm report | 1,176 | 4% | 1.0 h | – | 1.2k |
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 Apache from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.
- Windstorm 57%
- No storm on record 27%
- Winter storm 16%
Who keeps the lights on
Utilities serving Apache
As each utility reports to the Energy Information Administration for its whole Arizona territory, not this county alone. Outage minutes include major storm days.
| Utility | Type | Outage min / yr | Excl. major storms | Outages / yr | Residential ¢/kWh | Customers |
|---|---|---|---|---|---|---|
| Arizona Public Service Co | Investor Owned | 73 | 73 | 0.84 | 17.0 | 1.3M |
| Navopache Electric Coop, Inc | Cooperative | – | – | – | 13.5 | 41k |
| Navajo Tribal Utility Authority | State | 216 | 216 | 2.32 | 16.5 | 27k |
| 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
- Catron, NM 5.0 h
- Greenlee 4.7 h
- Navajo 3.2 h
- McKinley, NM 3.1 h
- San Juan, NM 3.0 h
- Cibola, NM 2.5 h
- San Juan, UT 1.9 h
- Apache (this county) 1.8 h
- Graham 0.1 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 29,549 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 →