County annual report · FIPS 30067
2025 Park County, MT Power Outage Report
In 2025, customers in Park County, MT went without power for an average of 8.7 hours, a total of 76K customer-hours (Montana average 6.8 hours). That ranks 20th worst of 51 Montana counties and 926th of 3,000 nationally.
Compared with MT, the US and 2024
Coverage line is EAGLE-I's share of Montana 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 | December 17, 2025 13:00 | December 24, 2025 21:30 | 7d 8h | 15,392 | 55K |
| 2 | July 15, 2025 04:30 | July 15, 2025 08:30 | 4h | 1,430 | 3,129 |
| 3 | February 20, 2025 15:00 | February 20, 2025 18:30 | 3h 30m | 1,156 | 1,250 |
| 4 | September 11, 2025 22:30 | September 11, 2025 23:45 | 1h 15m | 726 | 908 |
| 5 | December 12, 2025 23:45 | December 13, 2025 07:00 | 7h 15m | 380 | 2,316 |
| 6 | December 25, 2025 06:15 | December 25, 2025 19:45 | 13h 30m | 380 | 1,388 |
| 7 | July 31, 2025 12:30 | July 31, 2025 13:45 | 1h 15m | 378 | 378 |
| 8 | February 24, 2025 01:15 | February 24, 2025 09:45 | 8h 30m | 332 | 571 |
| 9 | September 16, 2025 09:00 | September 16, 2025 12:00 | 3h | 288 | 267 |
| 10 | January 21, 2025 11:45 | January 21, 2025 17:30 | 5h 45m | 232 | 706 |
Outage episodes by size in 2025: 25 reached 100+ customers, 3 reached 1,000+ customers, 1 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 |
|---|---|---|---|---|---|
| NorthWestern Energy LLC - (MT) | 2024 | 3.9 hrs | 1.30 | 2.0 hrs | 0.95 |
| Flathead Electric Coop Inc | 2024 | 9.8 hrs | 2.72 | 3.9 hrs | 1.90 |
| NorthWestern Energy | - | - | - | - | - |
| Park Electric Coop 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 Montana's customers in 2025; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 8,763 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 2015–2025.
Cite this report
MassOutage (massoutage.com), Park County, MT 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/montana/park-county