County annual report · FIPS 56013
2023 Fremont County, WY Power Outage Report
In 2023, customers in Fremont County, WY went without power for an average of 1.3 hours, a total of 34K customer-hours (Wyoming average 2.0 hours). That ranks 16th worst of 20 Wyoming counties and 2569th 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 Fremont 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 15, 2023 14:45 | August 15, 2023 20:15 | 5h 30m | 5,370 | 12K |
| 2 | October 13, 2023 07:15 | October 13, 2023 09:30 | 2h 15m | 5,065 | 9,005 |
| 3 | August 15, 2023 10:30 | August 15, 2023 11:15 | 45m | 2,238 | 1,679 |
| 4 | March 28, 2023 23:15 | March 28, 2023 23:30 | 15m | 555 | 139 |
| 5 | November 29, 2023 18:15 | November 29, 2023 20:30 | 2h 15m | 552 | 1,064 |
| 6 | November 30, 2023 00:00 | November 30, 2023 03:15 | 3h 15m | 382 | 98 |
| 7 | October 1, 2023 12:45 | October 1, 2023 20:15 | 7h 30m | 330 | 469 |
| 8 | March 25, 2023 02:00 | March 25, 2023 03:45 | 1h 45m | 290 | 403 |
| 9 | August 6, 2023 20:30 | August 7, 2023 04:00 | 7h 30m | 289 | 970 |
| 10 | October 10, 2023 23:15 | October 11, 2023 01:45 | 2h 30m | 284 | 537 |
Outage episodes by size in 2023: 18 reached 100+ customers, 3 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 Fremont 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 |
| High Plains Power Inc | 2023 | 5.4 hrs | - | 5.4 hrs | - |
| WAPA-- Western Area Power Administration | - | - | - | - | - |
| Midvale Irrigation District | - | - | - | - | - |
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 ÷ 26,823 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. Fremont County has data for 2017–2025.
Cite this report
MassOutage (massoutage.com), Fremont 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/fremont-county