County annual report · FIPS 56013
2025 Fremont County, WY Power Outage Report
In 2025, customers in Fremont County, WY went without power for an average of 1.0 hours, a total of 26K customer-hours (Wyoming average 3.8 hours). That ranks 19th worst of 20 Wyoming counties and 2767th of 3,000 nationally.
Compared with WY, the US and 2024
Coverage line is EAGLE-I's share of Wyoming customers tracked each year.
Biggest outages in Fremont County, 2025
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | July 11, 2025 06:15 | July 11, 2025 08:15 | 2h | 5,383 | 11K |
| 2 | December 17, 2025 15:45 | December 19, 2025 23:00 | 2d 7h | 2,886 | 4,702 |
| 3 | September 8, 2025 15:30 | September 8, 2025 21:15 | 5h 45m | 1,490 | 425 |
| 4 | March 21, 2025 20:15 | March 21, 2025 22:30 | 2h 15m | 443 | 821 |
| 5 | June 11, 2025 23:15 | June 12, 2025 00:30 | 1h 15m | 330 | 296 |
| 6 | October 5, 2025 01:30 | October 5, 2025 07:30 | 6h | 258 | 882 |
| 7 | August 24, 2025 18:45 | August 25, 2025 14:30 | 19h 45m | 235 | 1,035 |
| 8 | July 24, 2025 15:15 | July 24, 2025 20:45 | 5h 30m | 231 | 1,153 |
| 9 | April 13, 2025 10:30 | April 13, 2025 14:30 | 4h | 230 | 230 |
| 10 | February 22, 2025 20:00 | February 22, 2025 23:30 | 3h 30m | 227 | 766 |
Outage episodes by size in 2025: 15 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 2025, 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 | 2024 | 4.6 hrs | 1.67 | 2.0 hrs | 1.11 |
| High Plains Power Inc | 2024 | 5.2 hrs | - | 5.2 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 2025; 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, 2025, 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/2025/wyoming/fremont-county