County annual report · FIPS 49005
2018 Cache County, UT Power Outage Report
In 2018, customers in Cache County, UT went without power for an average of 0.9 hours, a total of 45K customer-hours (Utah average 1.9 hours). That ranks 24th worst of 26 Utah counties and 2347th of 2,798 nationally.
Compared with UT, the US and 2017
Coverage line is EAGLE-I's share of Utah customers tracked each year.
Biggest outages in Cache County, 2018
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | May 23, 2018 06:30 | May 23, 2018 11:15 | 4h 45m | 3,833 | 1,803 |
| 2 | October 3, 2018 03:00 | October 3, 2018 08:45 | 5h 45m | 3,593 | 7,483 |
| 3 | October 4, 2018 10:45 | October 4, 2018 13:00 | 2h 15m | 2,893 | 5,786 |
| 4 | July 10, 2018 20:15 | July 11, 2018 01:30 | 5h 15m | 2,240 | 604 |
| 5 | November 30, 2018 21:30 | December 1, 2018 00:00 | 2h 30m | 1,742 | 2,517 |
| 6 | December 4, 2018 23:45 | December 5, 2018 18:00 | 18h 15m | 1,723 | 6,210 |
| 7 | March 27, 2018 15:00 | March 27, 2018 17:30 | 2h 30m | 1,031 | 775 |
| 8 | December 10, 2018 15:15 | December 10, 2018 16:30 | 1h 15m | 661 | 783 |
| 9 | July 11, 2018 18:30 | July 11, 2018 22:45 | 4h 15m | 594 | 779 |
| 10 | July 30, 2018 15:00 | July 30, 2018 18:45 | 3h 45m | 576 | 2,150 |
Outage episodes by size in 2018: 37 reached 100+ customers, 7 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 Cache County reported on EIA Form 861 for 2018, 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 | 2018 | 3.2 hrs | 1.62 | 2.0 hrs | 1.25 |
| City of Logan - (UT) | 2018 | 22 min | 0.60 | 12 min | 0.47 |
| Hyrum 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 80% of Utah's customers in 2018; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 49,744 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. Cache County has data for 2017–2025.
Cite this report
MassOutage (massoutage.com), Cache County, UT annual power outage report, 2018, 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/2018/utah/cache-county