County annual report · FIPS 56005
2021 Campbell County, WY Power Outage Report
In 2021, customers in Campbell County, WY went without power for an average of 5.0 hours, a total of 140K customer-hours (Wyoming average 2.2 hours). That ranks 5th worst of 20 Wyoming counties and 1330th 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 Campbell 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 | October 13, 2021 05:15 | October 14, 2021 20:15 | 1d 15h | 2,200 | 14K |
| 2 | April 19, 2021 20:15 | April 19, 2021 20:30 | 15m | 2,167 | 542 |
| 3 | June 29, 2021 06:15 | June 29, 2021 13:15 | 7h | 2,067 | 2,618 |
| 4 | June 22, 2021 20:15 | June 22, 2021 20:45 | 30m | 2,048 | 1,024 |
| 5 | August 30, 2021 16:15 | August 31, 2021 16:45 | 1d | 2,018 | 3,981 |
| 6 | January 14, 2021 00:15 | January 15, 2021 00:15 | 1d | 1,310 | 13K |
| 7 | February 12, 2021 18:15 | February 15, 2021 17:15 | 2d 23h | 1,258 | 5,727 |
| 8 | September 13, 2021 10:00 | September 13, 2021 13:45 | 3h 45m | 1,236 | 748 |
| 9 | September 12, 2021 23:15 | September 13, 2021 03:00 | 3h 45m | 1,133 | 1,020 |
| 10 | June 15, 2021 01:00 | June 15, 2021 12:15 | 11h 15m | 1,117 | 8,486 |
Outage episodes by size in 2021: 125 reached 100+ customers, 16 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 Campbell 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 |
| Black Hills Power, Inc. | 2021 | 2.6 hrs | 1.17 | 41 min | 0.32 |
| Powder River Energy Corp | 2021 | 5.4 hrs | 2.15 | 3.9 hrs | 1.91 |
| City of Gillette - (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 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 28,060 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. Campbell County has data for 2016–2025.
Cite this report
MassOutage (massoutage.com), Campbell 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/campbell-county