County annual report · FIPS 56035
2018 Sublette County, WY Power Outage Report
In 2018, customers in Sublette County, WY went without power for an average of 10.1 hours, a total of 52K customer-hours (Wyoming average 1.2 hours). That ranks 2nd worst of 21 Wyoming counties and 548th of 2,798 nationally.
Compared with WY, the US and 2017
Coverage line is EAGLE-I's share of Wyoming customers tracked each year.
Biggest outages in Sublette County, 2018
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | November 7, 2018 20:15 | November 7, 2018 21:00 | 45m | 5,787 | 2,894 |
| 2 | September 11, 2018 05:15 | September 11, 2018 10:00 | 4h 45m | 5,635 | 23K |
| 3 | April 16, 2018 20:15 | April 17, 2018 00:45 | 4h 30m | 1,756 | 3,151 |
| 4 | February 13, 2018 21:15 | February 14, 2018 02:00 | 4h 45m | 1,521 | 2,284 |
| 5 | June 15, 2018 18:30 | June 15, 2018 19:00 | 30m | 1,387 | 441 |
| 6 | July 22, 2018 21:45 | July 23, 2018 03:30 | 5h 45m | 858 | 3,929 |
| 7 | March 31, 2018 18:45 | March 31, 2018 20:15 | 1h 30m | 470 | 705 |
| 8 | May 1, 2018 14:30 | May 1, 2018 16:45 | 2h 15m | 470 | 706 |
| 9 | October 29, 2018 20:00 | October 29, 2018 21:15 | 1h 15m | 355 | 358 |
| 10 | August 1, 2018 13:30 | August 1, 2018 13:45 | 15m | 240 | 60 |
Outage episodes by size in 2018: 15 reached 100+ customers, 5 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 2018, 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 62% of Wyoming's customers in 2018; 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, 2018, 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/2018/wyoming/sublette-county