County annual report · FIPS 56035
2020 Sublette County, WY Power Outage Report
In 2020, customers in Sublette County, WY went without power for an average of 2.0 hours, a total of 10K customer-hours (Wyoming average 3.4 hours). That ranks 14th worst of 22 Wyoming counties and 2249th of 3,019 nationally.
Compared with WY, the US and 2019
Coverage line is EAGLE-I's share of Wyoming customers tracked each year.
Biggest outages in Sublette County, 2020
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | June 28, 2020 23:30 | June 29, 2020 01:45 | 2h 15m | 690 | 353 |
| 2 | September 8, 2020 04:30 | September 10, 2020 18:15 | 2d 13h | 648 | 3,558 |
| 3 | August 31, 2020 05:45 | August 31, 2020 11:30 | 5h 45m | 342 | 773 |
| 4 | August 13, 2020 00:00 | August 13, 2020 06:45 | 6h 45m | 184 | 951 |
| 5 | April 16, 2020 12:15 | April 16, 2020 13:30 | 1h 15m | 182 | 164 |
| 6 | December 18, 2020 15:15 | December 18, 2020 22:15 | 7h | 180 | 672 |
| 7 | May 2, 2020 00:00 | May 2, 2020 05:45 | 5h 45m | 134 | 198 |
| 8 | August 20, 2020 14:45 | August 20, 2020 17:30 | 2h 45m | 128 | 99 |
| 9 | February 24, 2020 11:15 | February 24, 2020 16:45 | 5h 30m | 91 | 55 |
| 10 | August 19, 2020 03:15 | August 19, 2020 04:45 | 1h 30m | 86 | 114 |
Outage episodes by size in 2020: 8 reached 100+ customers, 0 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 Sublette County reported on EIA Form 861 for 2020, 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 | 2020 | 6.8 hrs | 1.88 | 2.0 hrs | 1.22 |
| Lower Valley Energy 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 2020; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 5,123 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. Sublette County has data for 2017–2025.
Cite this report
MassOutage (massoutage.com), Sublette County, WY annual power outage report, 2020, 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/2020/wyoming/sublette-county