County annual report · FIPS 56003
2022 Big Horn County, WY Power Outage Report
In 2022, customers in Big Horn County, WY went without power for an average of 1.8 hours, a total of 7,077 customer-hours (Wyoming average 2.4 hours). That ranks 12th worst of 20 Wyoming counties and 2364th of 2,976 nationally.
Compared with WY, the US and 2021
Coverage line is EAGLE-I's share of Wyoming customers tracked each year.
Biggest outages in Big Horn County, 2022
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 20, 2022 04:30 | May 20, 2022 08:00 | 3h 30m | 1,139 | 1,988 |
| 2 | April 5, 2022 06:00 | April 5, 2022 09:45 | 3h 45m | 519 | 1,946 |
| 3 | July 17, 2022 21:00 | July 18, 2022 00:30 | 3h 30m | 324 | 569 |
| 4 | April 12, 2022 18:30 | April 12, 2022 18:45 | 15m | 292 | 73 |
| 5 | October 11, 2022 03:30 | October 11, 2022 13:15 | 9h 45m | 230 | 400 |
| 6 | December 22, 2022 10:45 | December 22, 2022 14:45 | 4h | 161 | 365 |
| 7 | December 21, 2022 16:45 | December 21, 2022 20:30 | 3h 45m | 147 | 515 |
| 8 | October 19, 2022 19:00 | October 19, 2022 20:15 | 1h 15m | 102 | 128 |
| 9 | October 19, 2022 16:00 | October 19, 2022 18:00 | 2h | 100 | 126 |
| 10 | April 3, 2022 00:15 | April 3, 2022 05:15 | 5h | 78 | 255 |
Outage episodes by size in 2022: 9 reached 100+ customers, 1 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 Big Horn County reported on EIA Form 861 for 2022, 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 | 2022 | 5.2 hrs | 1.58 | 1.8 hrs | 1.11 |
| Powder River Energy Corp | 2022 | 5.1 hrs | 2.30 | 4.4 hrs | 2.18 |
| Big Horn Rural Electric Co | 2018 | 4.0 hrs | 1.80 | - | - |
| WAPA-- Western Area Power Administration | - | - | - | - | - |
| High Plains Power Inc | - | - | - | - | - |
| Garland Light & Power Company | - | - | - | - | - |
| City of Deaver - (WY) | - | - | - | - | - |
| Town of Basin - (WY) | - | - | - | - | - |
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 2022; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 3,930 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. Big Horn County has data for 2017–2025.
Cite this report
MassOutage (massoutage.com), Big Horn County, WY annual power outage report, 2022, 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/2022/wyoming/big-horn-county