County annual report · FIPS 56035
2023 Sublette County, WY Power Outage Report
In 2023, customers in Sublette County, WY went without power for an average of 2.7 hours, a total of 14K customer-hours (Wyoming average 2.0 hours). That ranks 9th worst of 20 Wyoming counties and 2068th of 2,977 nationally.
Compared with WY, the US and 2022
Coverage line is EAGLE-I's share of Wyoming customers tracked each year.
Biggest outages in Sublette County, 2023
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 4, 2023 12:00 | August 4, 2023 22:45 | 10h 45m | 1,503 | 1,443 |
| 2 | February 7, 2023 06:45 | February 7, 2023 07:15 | 30m | 893 | 224 |
| 3 | June 11, 2023 11:30 | June 11, 2023 12:15 | 45m | 691 | 183 |
| 4 | November 5, 2023 15:45 | November 5, 2023 18:00 | 2h 15m | 690 | 864 |
| 5 | July 28, 2023 15:15 | July 28, 2023 17:45 | 2h 30m | 686 | 177 |
| 6 | July 3, 2023 21:30 | July 4, 2023 09:15 | 11h 45m | 684 | 1,773 |
| 7 | March 14, 2023 20:00 | March 14, 2023 23:15 | 3h 15m | 467 | 1,518 |
| 8 | October 2, 2023 21:45 | October 2, 2023 23:45 | 2h | 451 | 594 |
| 9 | August 10, 2023 19:00 | August 11, 2023 04:30 | 9h 30m | 352 | 555 |
| 10 | June 12, 2023 01:45 | June 12, 2023 03:45 | 2h | 280 | 450 |
Outage episodes by size in 2023: 14 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 2023, 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 | 2023 | 8.2 hrs | 1.42 | 1.9 hrs | 0.99 |
| 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 n/a of Wyoming's customers in 2023; 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, 2023, 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/2023/wyoming/sublette-county