Power outage history
Duchesne County Utah
1.6hours
without power for the average customer in a typical year, 2018–2025
76% 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 Duchesne's customers who were without power at that day's worst moment.
Year by year
Hours in the dark, per customer
2019 was the worst well-recorded year, at 2.3 hours for the average customer. Hatched years have a thin record and are left out of the averages.
Duchesne, 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 |
|---|---|---|---|---|---|---|
| Feb 16, 2019 | No storm report | 314 | 5% | 10 h | 6.8 h | 2.8k |
| Nov 7, 2019 | No storm report | 902 | 15% | 3.0 h | 12 min | 2.5k |
| Apr 12, 2020 | No storm report | 404 | 7% | 4.2 h | 3.8 h | 1.7k |
| Mar 28, 2019 | No storm report | 849 | 14% | 1.2 h | 8.5 h | 1.1k |
| May 21, 2019 | No storm report | 379 | 6% | 3.5 h | 7.0 h | 856 |
| Jul 11, 2019 | No storm report | 104 | 2% | 6.8 h | – | 702 |
| Jul 24, 2019 | No storm report | 469 | 8% | 5.0 h | 12 min | 670 |
| May 19, 2020 | No storm report | 94 | 2% | 7.2 h | – | 615 |
| Jan 17, 2019 | No storm report | 144 | 2% | 3.8 h | – | 508 |
| May 20, 2020 | No storm report | 81 | 1% | 5.2 h | – | 425 |
| Nov 25, 2019 | No storm report | 82 | 1% | 4.0 h | – | 327 |
| Jan 18, 2019 | No storm report | 130 | 2% | 3.0 h | – | 282 |
| Jan 17, 2020 | No storm report | 87 | 1% | 2.8 h | – | 239 |
| Feb 19, 2020 | No storm report | 90 | 1% | 2.8 h | – | 225 |
| Mar 4, 2019 | No storm report | 224 | 4% | 1.2 h | – | 218 |
| Feb 20, 2020 | No storm report | 66 | 1% | 2.5 h | – | 165 |
| Jul 5, 2019 | No storm report | 78 | 1% | 1.8 h | – | 136 |
| Aug 23, 2019 | No storm report | 96 | 2% | 1.2 h | – | 120 |
| Apr 9, 2020 | No storm report | 392 | 6% | 12 min | – | 98 |
| Feb 13, 2019 | No storm report | 134 | 2% | 48 min | – | 87 |
| Nov 20, 2019 | No storm report | 113 | 2% | 48 min | – | 85 |
| Jun 12, 2019 | No storm report | 65 | 1% | 1.0 h | – | 65 |
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 Duchesne from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.
- No storm on record 100%
Who keeps the lights on
Utilities serving Duchesne
As each utility reports to the Energy Information Administration for its whole Utah territory, not this county alone. Outage minutes include major storm days.
| Utility | Type | Outage min / yr | Excl. major storms | Outages / yr | Residential ¢/kWh | Customers |
|---|---|---|---|---|---|---|
| PacifiCorp | Investor Owned | 118 | 102 | 0.90 | 13.5 | 969k |
| Moon Lake Electric Assn Inc | Cooperative | 183 | 183 | 1.98 | 9.3 | 13k |
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.
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 6,214 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 →