County annual report · FIPS 56037
2019 Sweetwater County, WY Power Outage Report
In 2019, customers in Sweetwater County, WY went without power for an average of 1.2 hours, a total of 31K customer-hours (Wyoming average 1.3 hours). That ranks 14th worst of 22 Wyoming counties and 2401st 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 Sweetwater 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 | August 18, 2019 07:00 | August 18, 2019 08:30 | 1h 30m | 4,205 | 4,039 |
| 2 | January 20, 2019 19:15 | January 20, 2019 20:45 | 1h 30m | 1,950 | 745 |
| 3 | February 9, 2019 15:30 | February 9, 2019 15:45 | 15m | 1,382 | 346 |
| 4 | August 8, 2019 14:45 | August 9, 2019 04:45 | 14h | 1,032 | 961 |
| 5 | September 8, 2019 17:30 | September 9, 2019 09:45 | 16h 15m | 823 | 1,348 |
| 6 | November 11, 2019 19:45 | November 11, 2019 22:15 | 2h 30m | 622 | 468 |
| 7 | August 26, 2019 12:45 | August 26, 2019 23:15 | 10h 30m | 608 | 1,315 |
| 8 | January 16, 2019 15:30 | January 17, 2019 02:30 | 11h | 499 | 732 |
| 9 | November 7, 2019 16:30 | November 8, 2019 02:15 | 9h 45m | 414 | 351 |
| 10 | May 22, 2019 02:15 | May 22, 2019 13:30 | 11h 15m | 380 | 868 |
Outage episodes by size in 2019: 30 reached 100+ customers, 4 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 Sweetwater 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 |
| WAPA-- Western Area Power Administration | - | - | - | - | - |
| Bridger Valley Elec Assn, 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 ÷ 25,475 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. Sweetwater County has data for 2017–2025.
Cite this report
MassOutage (massoutage.com), Sweetwater 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/sweetwater-county