County annual report · FIPS 56029
2025 Park County, WY Power Outage Report
In 2025, customers in Park County, WY went without power for an average of 2.6 hours, a total of 36K customer-hours (Wyoming average 3.8 hours). That ranks 13th worst of 20 Wyoming counties and 2202nd 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 Park 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 26, 2025 05:00 | July 26, 2025 07:00 | 2h | 2,206 | 3,987 |
| 2 | November 12, 2025 00:45 | November 12, 2025 06:15 | 5h 30m | 1,194 | 3,583 |
| 3 | December 17, 2025 18:45 | December 18, 2025 19:30 | 1d | 1,151 | 8,120 |
| 4 | August 27, 2025 14:30 | August 27, 2025 19:00 | 4h 30m | 808 | 1,725 |
| 5 | August 12, 2025 04:45 | August 12, 2025 09:30 | 4h 45m | 800 | 3,633 |
| 6 | June 12, 2025 00:15 | June 12, 2025 04:30 | 4h 15m | 708 | 198 |
| 7 | July 31, 2025 22:45 | August 1, 2025 02:30 | 3h 45m | 648 | 676 |
| 8 | May 11, 2025 21:15 | May 12, 2025 02:15 | 5h | 646 | 381 |
| 9 | March 18, 2025 08:45 | March 18, 2025 22:00 | 13h 15m | 479 | 878 |
| 10 | August 4, 2025 20:00 | August 5, 2025 06:30 | 10h 30m | 372 | 493 |
Outage episodes by size in 2025: 23 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 Park 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 |
| NorthWestern Energy LLC - (MT) | 2024 | 3.9 hrs | 1.30 | 2.0 hrs | 0.95 |
| High Plains Power Inc | 2024 | 5.2 hrs | - | 5.2 hrs | - |
| Big Horn Rural Electric Co | 2018 | 4.0 hrs | 1.80 | - | - |
| WAPA-- Western Area Power Administration | - | - | - | - | - |
| NorthWestern Energy | - | - | - | - | - |
| Beartooth Electric Coop, Inc | - | - | - | - | - |
| Garland Light & Power Company | - | - | - | - | - |
| City of Cody | - | - | - | - | - |
| City of Powell - (WY) | - | - | - | - | - |
| Willwood Light & Power Company | - | - | - | - | - |
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 ÷ 14,005 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. Park County has data for 2015, 2017–2025.
Cite this report
MassOutage (massoutage.com), Park 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/park-county