County annual report · FIPS 49041
2021 Sevier County, UT Power Outage Report
In 2021, customers in Sevier County, UT went without power for an average of 5.2 hours, a total of 42K customer-hours (Utah average 2.6 hours). That ranks 10th worst of 25 Utah counties and 1298th 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 Sevier 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 | July 22, 2021 19:15 | July 23, 2021 02:15 | 7h | 2,243 | 2,486 |
| 2 | October 12, 2021 11:45 | October 13, 2021 00:45 | 13h | 2,084 | 7,025 |
| 3 | May 14, 2021 14:15 | May 14, 2021 19:30 | 5h 15m | 1,784 | 8,922 |
| 4 | December 6, 2021 23:15 | December 7, 2021 04:30 | 5h 15m | 1,745 | 3,855 |
| 5 | May 4, 2021 20:45 | May 4, 2021 22:00 | 1h 15m | 1,394 | 351 |
| 6 | December 15, 2021 05:30 | December 15, 2021 07:45 | 2h 15m | 1,387 | 601 |
| 7 | March 23, 2021 23:45 | March 24, 2021 05:00 | 5h 15m | 1,301 | 2,941 |
| 8 | August 9, 2021 23:00 | August 9, 2021 23:30 | 30m | 763 | 382 |
| 9 | March 3, 2021 16:15 | March 3, 2021 23:45 | 7h 30m | 746 | 4,289 |
| 10 | February 5, 2021 23:00 | February 6, 2021 03:30 | 4h 30m | 681 | 1,916 |
Outage episodes by size in 2021: 23 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 Sevier 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 |
| Garkane Energy Coop, Inc | 2021 | 2.4 hrs | - | 2.4 hrs | - |
| City of Monroe - (UT) | - | - | - | - | - |
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 ÷ 8,108 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. Sevier County has data for 2017–2025.
Cite this report
MassOutage (massoutage.com), Sevier 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/sevier-county