County annual report · FIPS 49005
2023 Cache County, UT Power Outage Report
In 2023, customers in Cache County, UT went without power for an average of 3.5 hours, a total of 173K customer-hours (Utah average 2.5 hours). That ranks 12th worst of 26 Utah counties and 1794th of 2,977 nationally.
Compared with UT, the US and 2022
Coverage line is EAGLE-I's share of Utah customers tracked each year.
Biggest outages in Cache County, 2023
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 14, 2023 04:00 | May 15, 2023 04:45 | 1d | 14,856 | 51K |
| 2 | August 22, 2023 03:15 | August 22, 2023 14:15 | 11h | 6,343 | 26K |
| 3 | October 1, 2023 01:45 | October 1, 2023 15:30 | 13h 45m | 5,121 | 38K |
| 4 | July 27, 2023 15:15 | July 27, 2023 20:30 | 5h 15m | 3,149 | 1,793 |
| 5 | May 16, 2023 10:45 | May 16, 2023 12:45 | 2h | 3,100 | 6,200 |
| 6 | September 4, 2023 03:15 | September 4, 2023 08:15 | 5h | 1,807 | 5,104 |
| 7 | September 11, 2023 22:45 | September 12, 2023 04:00 | 5h 15m | 1,763 | 889 |
| 8 | March 23, 2023 15:15 | March 23, 2023 18:30 | 3h 15m | 1,659 | 1,659 |
| 9 | April 15, 2023 15:15 | April 15, 2023 17:15 | 2h | 1,650 | 2,887 |
| 10 | August 19, 2023 07:15 | August 19, 2023 09:00 | 1h 45m | 1,205 | 2,109 |
Outage episodes by size in 2023: 48 reached 100+ customers, 12 reached 1,000+ customers, 1 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 2023, 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 | 2023 | 8.2 hrs | 1.42 | 1.9 hrs | 0.99 |
| City of Logan - (UT) | 2023 | 35 min | 0.49 | 35 min | 0.49 |
| 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 n/a of Utah's customers in 2023; 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, 2023, 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/2023/utah/cache-county