County annual report · FIPS 56037
2017 Sweetwater County, WY Power Outage Report
In 2017, customers in Sweetwater County, WY went without power for an average of 2.3 hours, a total of 59K customer-hours (Wyoming average 0.9 hours). That ranks 4th worst of 19 Wyoming counties and 1534th of 2,786 nationally.
Compared with WY, the US
Coverage line is EAGLE-I's share of Wyoming customers tracked each year.
Biggest outages in Sweetwater County, 2017
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | September 12, 2017 18:30 | September 12, 2017 20:45 | 2h 15m | 13,823 | 18K |
| 2 | September 15, 2017 02:45 | September 15, 2017 04:45 | 2h | 11,836 | 21K |
| 3 | October 27, 2017 16:15 | October 27, 2017 18:45 | 2h 30m | 6,041 | 1,512 |
| 4 | November 8, 2017 10:00 | November 8, 2017 17:45 | 7h 45m | 5,787 | 1,461 |
| 5 | August 15, 2017 08:45 | August 15, 2017 11:30 | 2h 45m | 3,086 | 3,195 |
| 6 | October 5, 2017 17:15 | October 5, 2017 23:00 | 5h 45m | 1,942 | 1,045 |
| 7 | December 29, 2017 23:45 | December 30, 2017 00:00 | 15m | 452 | 113 |
| 8 | August 17, 2017 17:45 | August 17, 2017 23:15 | 5h 30m | 429 | 713 |
| 9 | October 31, 2017 16:45 | November 1, 2017 04:15 | 11h 30m | 332 | 1,624 |
| 10 | September 27, 2017 00:00 | September 27, 2017 03:30 | 3h 30m | 287 | 625 |
Outage episodes by size in 2017: 20 reached 100+ customers, 6 reached 1,000+ customers, 2 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 2017, 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 | 2017 | 5.2 hrs | 2.01 | 2.4 hrs | 1.43 |
| 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 n/a of Wyoming's customers in 2017; 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, 2017, 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/2017/wyoming/sweetwater-county