County annual report · FIPS 56041
2021 Uinta County, WY Power Outage Report
In 2021, customers in Uinta County, WY went without power for an average of 1.3 hours, a total of 16K customer-hours (Wyoming average 2.2 hours). That ranks 15th worst of 20 Wyoming counties and 2537th of 2,974 nationally.
Compared with WY, the US and 2020
Coverage line is EAGLE-I's share of Wyoming customers tracked each year.
Biggest outages in Uinta 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 | August 22, 2021 01:30 | August 22, 2021 08:45 | 7h 15m | 1,278 | 6,275 |
| 2 | November 10, 2021 00:45 | November 10, 2021 07:30 | 6h 45m | 1,204 | 1,539 |
| 3 | December 26, 2021 16:15 | December 26, 2021 23:00 | 6h 45m | 685 | 791 |
| 4 | August 23, 2021 12:00 | August 23, 2021 20:15 | 8h 15m | 391 | 595 |
| 5 | May 22, 2021 23:00 | May 23, 2021 09:30 | 10h 30m | 357 | 629 |
| 6 | May 26, 2021 16:45 | May 26, 2021 17:45 | 1h | 357 | 357 |
| 7 | May 31, 2021 01:45 | May 31, 2021 03:45 | 2h | 357 | 636 |
| 8 | April 14, 2021 00:00 | April 14, 2021 02:00 | 2h | 284 | 499 |
| 9 | August 19, 2021 11:30 | August 19, 2021 21:15 | 9h 45m | 284 | 682 |
| 10 | December 16, 2021 04:45 | December 16, 2021 08:00 | 3h 15m | 241 | 351 |
Outage episodes by size in 2021: 17 reached 100+ customers, 2 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 Uinta 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 |
| Bridger Valley Elec Assn, Inc | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 71% of Wyoming's customers in 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 12,368 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. Uinta County has data for 2017–2025.
Cite this report
MassOutage (massoutage.com), Uinta County, WY 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/wyoming/uinta-county