County annual report · FIPS 49003
2021 Box Elder County, UT Power Outage Report
In 2021, customers in Box Elder County, UT went without power for an average of 1.8 hours, a total of 41K customer-hours (Utah average 2.6 hours). That ranks 21st worst of 25 Utah counties and 2336th of 2,974 nationally.
Compared with UT, the US and 2020
Coverage line is EAGLE-I's share of Utah customers tracked each year.
Biggest outages in Box Elder County, 2021
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | January 31, 2021 15:30 | January 31, 2021 19:00 | 3h 30m | 1,819 | 4,547 |
| 2 | December 15, 2021 02:00 | December 16, 2021 05:00 | 1d 3h | 1,694 | 5,947 |
| 3 | July 13, 2021 22:45 | July 14, 2021 02:45 | 4h | 1,282 | 380 |
| 4 | April 28, 2021 13:00 | April 28, 2021 15:45 | 2h 45m | 757 | 338 |
| 5 | May 31, 2021 04:15 | May 31, 2021 07:15 | 3h | 688 | 1,096 |
| 6 | June 2, 2021 14:30 | June 2, 2021 21:00 | 6h 30m | 688 | 2,236 |
| 7 | June 3, 2021 14:45 | June 3, 2021 20:45 | 6h | 439 | 2,634 |
| 8 | August 18, 2021 14:15 | August 19, 2021 00:15 | 10h | 377 | 2,079 |
| 9 | October 12, 2021 09:30 | October 12, 2021 17:15 | 7h 45m | 335 | 410 |
| 10 | May 25, 2021 15:00 | May 25, 2021 21:15 | 6h 15m | 311 | 1,133 |
Outage episodes by size in 2021: 38 reached 100+ customers, 3 reached 1,000+ customers, 0 reached 10,000+ customers.
Utility reliability filed with the EIA
SAIDI (average outage time per customer) and SAIFI (average interruptions per customer) that utilities serving Box Elder County reported on EIA Form 861 for 2021, or their most recent earlier filing. Utility-wide figures, not county-specific.
| Utility | EIA year | SAIDI | SAIFI | SAIDI excl. major events | SAIFI excl. major events |
|---|---|---|---|---|---|
| PacifiCorp | 2021 | 4.3 hrs | 1.86 | 2.0 hrs | 1.19 |
| Raft Rural Elec Coop Inc | - | - | - | - | - |
| Brigham City Corporation | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 79% of Utah's customers in 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 23,064 customers (ORNL modeled county customer count), including major storm days. It is comparable across counties but is not the SAIDI a utility files.
- An outage event is a continuous stretch with customers out; counts at 100, 1,000 and 10,000+ use its peak.
- Years loaded: 2015–2025. Box Elder County has data for 2017–2025.
Cite this report
MassOutage (massoutage.com), Box Elder County, UT annual power outage report, 2021, data as of Oct 3, 2026 02:41 UTC, sources: DOE EAGLE-I (https://eagle-i.doe.gov/); EAGLE-I modeled customer counts (MCC) (https://figshare.com/); EIA Form 861 (utility reliability) (https://www.eia.gov/electricity/data/eia861/). https://massoutage.com/reports/2021/utah/box-elder-county