County annual report · FIPS 30031
2022 Gallatin County, MT Power Outage Report
In 2022, customers in Gallatin County, MT went without power for an average of 1.5 hours, a total of 145K customer-hours (Montana average 3.5 hours). That ranks 41st worst of 50 Montana counties and 2504th of 2,976 nationally.
Compared with MT, the US and 2021
Coverage line is EAGLE-I's share of Montana customers tracked each year.
Biggest outages in Gallatin County, 2022
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 16, 2022 20:00 | October 17, 2022 04:15 | 8h 15m | 11,296 | 31K |
| 2 | December 22, 2022 23:15 | December 23, 2022 06:30 | 7h 15m | 2,068 | 4,074 |
| 3 | May 23, 2022 12:15 | May 23, 2022 21:45 | 9h 30m | 2,004 | 2,569 |
| 4 | May 3, 2022 14:15 | May 3, 2022 20:45 | 6h 30m | 1,337 | 2,060 |
| 5 | January 10, 2022 18:30 | January 10, 2022 23:15 | 4h 45m | 1,315 | 2,258 |
| 6 | May 10, 2022 12:00 | May 10, 2022 22:00 | 10h | 1,293 | 2,594 |
| 7 | May 30, 2022 04:45 | May 30, 2022 07:30 | 2h 45m | 1,052 | 2,891 |
| 8 | October 23, 2022 01:30 | October 25, 2022 03:00 | 2d 1h | 967 | 15K |
| 9 | May 9, 2022 03:00 | May 10, 2022 01:45 | 22h 45m | 944 | 5,006 |
| 10 | May 11, 2022 13:00 | May 11, 2022 19:00 | 6h | 897 | 2,392 |
Outage episodes by size in 2022: 83 reached 100+ customers, 7 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 Gallatin County reported on EIA Form 861 for 2022, 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) | 2022 | 2.2 hrs | 1.14 | 2.0 hrs | 1.09 |
| Fall River Rural Elec Coop Inc | 2022 | 15 min | 0.13 | 13 min | 0.11 |
| NorthWestern Energy | - | - | - | - | - |
| Vigilante Electric Coop, Inc | - | - | - | - | - |
| 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 76% of Montana's customers in 2022; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 96,603 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. Gallatin County has data for 2019–2025.
Cite this report
MassOutage (massoutage.com), Gallatin County, MT annual power outage report, 2022, 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/2022/montana/gallatin-county