County annual report · FIPS 56035
2019 Sublette County, WY Power Outage Report
In 2019, customers in Sublette County, WY went without power for an average of 3.0 hours, a total of 15K customer-hours (Wyoming average 1.3 hours). That ranks 4th worst of 22 Wyoming counties and 1655th of 2,945 nationally.
Compared with WY, the US and 2018
Coverage line is EAGLE-I's share of Wyoming customers tracked each year.
Biggest outages in Sublette County, 2019
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | April 26, 2019 18:30 | April 26, 2019 20:15 | 1h 45m | 1,416 | 866 |
| 2 | June 17, 2019 02:30 | June 17, 2019 08:45 | 6h 15m | 938 | 1,879 |
| 3 | November 11, 2019 19:45 | November 11, 2019 21:15 | 1h 30m | 622 | 467 |
| 4 | August 26, 2019 12:45 | August 26, 2019 17:15 | 4h 30m | 607 | 1,267 |
| 5 | July 5, 2019 18:15 | July 5, 2019 22:45 | 4h 30m | 322 | 798 |
| 6 | August 25, 2019 22:15 | August 26, 2019 04:45 | 6h 30m | 306 | 496 |
| 7 | February 4, 2019 17:00 | February 4, 2019 19:45 | 2h 45m | 304 | 691 |
| 8 | April 7, 2019 14:45 | April 7, 2019 17:45 | 3h | 304 | 344 |
| 9 | April 17, 2019 00:15 | April 17, 2019 01:30 | 1h 15m | 241 | 297 |
| 10 | May 20, 2019 19:30 | May 20, 2019 20:00 | 30m | 226 | 69 |
Outage episodes by size in 2019: 18 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 Sublette County reported on EIA Form 861 for 2019, 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 | 2018 | 3.2 hrs | 1.62 | 2.0 hrs | 1.25 |
| 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 68% of Wyoming's customers in 2019; 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, 2019, 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/2019/wyoming/sublette-county