County annual report · FIPS 30029
2020 Flathead County, MT Power Outage Report
In 2020, customers in Flathead County, MT went without power for an average of 13.2 hours, a total of 866K customer-hours (Montana average 5.6 hours). That ranks 10th worst of 50 Montana counties and 619th of 3,019 nationally.
Compared with MT, the US and 2019
Coverage line is EAGLE-I's share of Montana customers tracked each year.
Biggest outages in Flathead County, 2020
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | May 31, 2020 14:00 | June 4, 2020 23:00 | 4d 9h | 34,234 | 531K |
| 2 | May 2, 2020 23:45 | May 3, 2020 03:00 | 3h 15m | 10,342 | 19K |
| 3 | May 7, 2020 14:30 | May 8, 2020 00:45 | 10h 15m | 8,795 | 28K |
| 4 | February 1, 2020 13:00 | February 3, 2020 00:30 | 1d 11h | 7,241 | 35K |
| 5 | March 13, 2020 16:15 | March 17, 2020 07:30 | 3d 15h | 4,709 | 88K |
| 6 | August 7, 2020 17:15 | August 7, 2020 22:45 | 5h 30m | 4,539 | 14K |
| 7 | January 17, 2020 21:15 | January 18, 2020 01:30 | 4h 15m | 4,396 | 13K |
| 8 | January 7, 2020 01:30 | January 7, 2020 21:15 | 19h 45m | 2,977 | 5,075 |
| 9 | January 7, 2020 23:00 | January 7, 2020 23:45 | 45m | 2,622 | 1,967 |
| 10 | January 19, 2020 17:00 | January 19, 2020 20:30 | 3h 30m | 2,622 | 7,864 |
Outage episodes by size in 2020: 92 reached 100+ customers, 23 reached 1,000+ customers, 2 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 2020, 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 | 2020 | 14.5 hrs | 2.38 | 2.9 hrs | 1.02 |
| 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 76% of Montana's customers in 2020; 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, 2020, 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/2020/montana/flathead-county