County annual report · FIPS 30029
2025 Flathead County, MT Power Outage Report
In 2025, customers in Flathead County, MT went without power for an average of 12.2 hours, a total of 799K customer-hours (Montana average 6.8 hours). That ranks 14th worst of 51 Montana counties and 642nd 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 Flathead 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 15:00 | December 22, 2025 22:45 | 5d 7h | 23,250 | 576K |
| 2 | February 15, 2025 20:15 | February 15, 2025 22:45 | 2h 30m | 9,650 | 16K |
| 3 | December 16, 2025 03:30 | December 17, 2025 14:15 | 1d 10h | 6,204 | 50K |
| 4 | November 28, 2025 03:45 | November 28, 2025 23:45 | 20h | 4,041 | 25K |
| 5 | June 26, 2025 22:30 | June 26, 2025 23:30 | 1h | 3,477 | 870 |
| 6 | July 31, 2025 21:00 | July 31, 2025 23:45 | 2h 45m | 2,910 | 857 |
| 7 | December 28, 2025 15:30 | December 28, 2025 19:45 | 4h 15m | 2,384 | 6,685 |
| 8 | July 15, 2025 01:15 | July 15, 2025 10:00 | 8h 45m | 2,240 | 6,416 |
| 9 | July 10, 2025 14:30 | July 11, 2025 01:30 | 11h | 1,859 | 1,735 |
| 10 | May 30, 2025 15:45 | May 30, 2025 18:00 | 2h 15m | 1,858 | 4,167 |
Outage episodes by size in 2025: 100 reached 100+ customers, 20 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 Flathead 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 |
|---|---|---|---|---|---|
| Flathead Electric Coop Inc | 2024 | 9.8 hrs | 2.72 | 3.9 hrs | 1.90 |
| Lincoln Electric Coop, Inc | 2018 | 18.7 hrs | - | 3.0 hrs | - |
| Glacier Electric Coop, Inc | - | - | - | - | - |
| USBIA-Mission Valley Power | - | - | - | - | - |
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 ÷ 65,575 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. Flathead County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Flathead 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/flathead-county