County annual report · FIPS 30029
2023 Flathead County, MT Power Outage Report
In 2023, customers in Flathead County, MT went without power for an average of 2.3 hours, a total of 153K customer-hours (Montana average 1.8 hours). That ranks 19th worst of 50 Montana counties and 2175th of 2,977 nationally.
Compared with MT, the US and 2022
Coverage line is EAGLE-I's share of Montana customers tracked each year.
Biggest outages in Flathead 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 | June 11, 2023 23:30 | June 12, 2023 03:15 | 3h 45m | 3,583 | 6,436 |
| 2 | November 17, 2023 23:00 | November 18, 2023 01:00 | 2h | 3,513 | 2,672 |
| 3 | September 29, 2023 13:00 | September 29, 2023 22:00 | 9h | 3,419 | 6,065 |
| 4 | April 25, 2023 14:45 | April 25, 2023 23:15 | 8h 30m | 2,904 | 754 |
| 5 | April 28, 2023 04:00 | April 28, 2023 06:45 | 2h 45m | 2,891 | 7,950 |
| 6 | May 6, 2023 18:45 | May 6, 2023 22:15 | 3h 30m | 2,789 | 5,859 |
| 7 | October 23, 2023 19:00 | October 23, 2023 20:45 | 1h 45m | 2,450 | 2,488 |
| 8 | August 25, 2023 22:30 | August 25, 2023 23:00 | 30m | 2,422 | 606 |
| 9 | December 19, 2023 09:00 | December 19, 2023 20:15 | 11h 15m | 2,419 | 2,416 |
| 10 | June 21, 2023 15:15 | June 22, 2023 00:30 | 9h 15m | 2,005 | 850 |
Outage episodes by size in 2023: 108 reached 100+ customers, 27 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 Flathead 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 |
|---|---|---|---|---|---|
| Flathead Electric Coop Inc | 2023 | 2.7 hrs | 1.62 | 2.7 hrs | 1.62 |
| 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 2023; 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, 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/montana/flathead-county