Power outage history
Mohave County Arizona
0.8hours
without power for the average customer in a typical year, 2018–2025
10th most of 11 in Arizona 87% 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 Mohave'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 2.0 hours for the average customer. Hatched years have a thin record and are left out of the averages.
Mohave, 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 |
|---|---|---|---|---|---|---|
| Aug 29, 2021 | Heat | 4,434 | 3% | 47 h | – | 136k |
| Sep 4, 2022 | Thunderstorms | 7,822 | 5% | 16 h | 26 h | 81k |
| Jan 30, 2021 | No storm report | 2,153 | 1% | 18 h | – | 37k |
| Sep 2, 2017 | Thunderstorms | 8,485 | 6% | 5.5 h | 3.5 h | 31k |
| Jan 6, 2024 | No storm report | 10,282 | 7% | 2.8 h | – | 27k |
| Sep 5, 2017 | Thunderstorms | 12,660 | 8% | 3.0 h | 2.2 h | 27k |
| Mar 13, 2025 | Winter storm | 9,999 | 7% | 2.2 h | 48 min | 22k |
| Jul 25, 2021 | Flooding | 10,192 | 7% | 3.2 h | 2.5 h | 20k |
| Oct 11, 2021 | Windstorm | 4,684 | 3% | 3.8 h | – | 17k |
| Nov 8, 2021 | No storm report | 6,051 | 4% | 2.8 h | 3.0 h | 16k |
| Sep 26, 2025 | Flooding | 4,814 | 3% | 3.0 h | – | 13k |
| Oct 27, 2018 | No storm report | 5,721 | 4% | 2.2 h | 2.2 h | 13k |
| Nov 5, 2024 | No storm report | 4,844 | 3% | 2.5 h | – | 12k |
| Apr 24, 2019 | No storm report | 10,089 | 7% | 1.0 h | 48 min | 10k |
| Jun 9, 2022 | Heat | 9,202 | 6% | 1.2 h | 48 min | 9.3k |
| Aug 18, 2016 | Flooding | 9,329 | 6% | 2.5 h | 1.5 h | 9.1k |
| Apr 23, 2025 | No storm report | 5,515 | 4% | 1.5 h | 1.5 h | 8.3k |
| Apr 19, 2019 | No storm report | 6,972 | 5% | 1.8 h | 1.0 h | 8.1k |
| Jan 8, 2019 | No storm report | 2,204 | 1% | 3.5 h | – | 7.7k |
| Dec 31, 2021 | No storm report | 4,453 | 3% | 1.8 h | – | 7.7k |
| Nov 7, 2022 | No storm report | 6,358 | 4% | 1.5 h | 48 min | 7.5k |
| Aug 20, 2022 | Flooding | 2,201 | 1% | 3.5 h | – | 7.3k |
| Jan 24, 2025 | No storm report | 4,021 | 3% | 1.8 h | – | 7.0k |
| Aug 2, 2021 | No storm report | 2,802 | 2% | 4.5 h | – | 6.5k |
| Jul 13, 2018 | No storm report | 1,953 | 1% | 3.2 h | – | 6.3k |
| May 2, 2023 | No storm report | 2,396 | 2% | 2.8 h | – | 6.0k |
| Feb 21, 2019 | Winter storm | 2,227 | 1% | 4.5 h | – | 5.6k |
| Jul 12, 2024 | Heat | 3,034 | 2% | 2.5 h | – | 5.4k |
| Nov 21, 2020 | No storm report | 1,763 | 1% | 2.8 h | – | 4.8k |
| Sep 2, 2022 | Heat | 6,412 | 4% | 48 min | 4.2 h | 4.8k |
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 Mohave from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.
- No storm on record 42%
- Heat 27%
- Thunderstorms 14%
- Flooding 8.3%
- Winter storm 5.2%
- Windstorm 3.5%
Who keeps the lights on
Utilities serving Mohave
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 |
| UNS Electric, Inc | Investor Owned | 81 | 64 | 0.94 | 17.0 | 95k |
| Mohave Electric Cooperative, Inc. | Cooperative | 197 | 152 | – | 11.3 | 42k |
| Aha Macav Power Service | AZ | – | – | – | 9.4 | 4.5k |
| Dixie Escalante R E A, Inc | Cooperative | 99 | 10 | 1.29 | 10.3 | 2.8k |
| Garkane Energy Coop, Inc | Cooperative | – | – | – | 12.1 | 1.5k |
| 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
- La Paz 10 h
- San Bernardino, CA 6.8 h
- Yavapai 3.0 h
- Coconino 1.8 h
- Washington, UT 1.3 h
- Clark, NV 1.2 h
- Kane, UT 1.0 h
- Mohave (this county) 0.8 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 149,928 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 →