County annual report · FIPS 30029
2017 Flathead County, MT Power Outage Report
In 2017, customers in Flathead County, MT went without power for an average of 3.9 hours, a total of 256K customer-hours (Montana average 2.7 hours). That ranks 2nd worst of 19 Montana counties and 1134th of 2,786 nationally.
Compared with MT, the US and 2016
Coverage line is EAGLE-I's share of Montana customers tracked each year.
Biggest outages in Flathead County, 2017
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | October 17, 2017 15:00 | October 20, 2017 01:45 | 2d 10h | 10,941 | 70K |
| 2 | August 11, 2017 01:30 | August 12, 2017 01:45 | 1d | 6,435 | 32K |
| 3 | May 24, 2017 06:00 | May 25, 2017 02:00 | 20h | 3,745 | 16K |
| 4 | December 19, 2017 19:15 | December 21, 2017 02:00 | 1d 6h | 2,705 | 17K |
| 5 | September 7, 2017 16:45 | September 7, 2017 18:45 | 2h | 2,384 | 613 |
| 6 | July 7, 2017 19:00 | July 8, 2017 07:00 | 12h | 1,999 | 7,273 |
| 7 | July 7, 2017 11:30 | July 7, 2017 16:30 | 5h | 1,966 | 1,977 |
| 8 | November 24, 2017 05:30 | November 24, 2017 12:00 | 6h 30m | 1,797 | 4,730 |
| 9 | March 26, 2017 13:45 | March 26, 2017 22:45 | 9h | 1,680 | 3,962 |
| 10 | August 14, 2017 17:45 | August 15, 2017 07:30 | 13h 45m | 1,620 | 952 |
Outage episodes by size in 2017: 102 reached 100+ customers, 18 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 2017, 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 | 2017 | 6.1 hrs | 2.20 | 3.5 hrs | 1.48 |
| Lincoln Electric Coop, Inc | 2017 | 18.3 hrs | - | 9.1 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 2017; 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, 2017, 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/2017/montana/flathead-county