County annual report · FIPS 30031
2024 Gallatin County, MT Power Outage Report
In 2024, customers in Gallatin County, MT went without power for an average of 2.4 hours, a total of 233K customer-hours (Montana average 8.5 hours). That ranks 38th worst of 51 Montana counties and 2290th of 2,990 nationally.
Compared with MT, the US and 2023
Coverage line is EAGLE-I's share of Montana customers tracked each year.
Biggest outages in Gallatin County, 2024
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | August 29, 2024 03:30 | August 29, 2024 07:15 | 3h 45m | 12,843 | 45K |
| 2 | September 12, 2024 01:15 | September 13, 2024 01:15 | 1d | 11,492 | 48K |
| 3 | September 16, 2024 18:45 | September 17, 2024 07:45 | 13h | 4,708 | 12K |
| 4 | April 5, 2024 09:15 | April 5, 2024 22:00 | 12h 45m | 3,647 | 12K |
| 5 | May 7, 2024 05:00 | May 9, 2024 08:15 | 2d 3h | 2,468 | 9,869 |
| 6 | July 2, 2024 15:45 | July 2, 2024 17:45 | 2h | 2,439 | 1,163 |
| 7 | October 17, 2024 04:15 | October 17, 2024 13:30 | 9h 15m | 2,365 | 6,750 |
| 8 | May 23, 2024 12:45 | May 24, 2024 00:15 | 11h 30m | 1,631 | 7,081 |
| 9 | August 13, 2024 14:00 | August 14, 2024 05:00 | 15h | 1,521 | 1,879 |
| 10 | June 18, 2024 03:45 | June 19, 2024 01:15 | 21h 30m | 1,405 | 12K |
Outage episodes by size in 2024: 69 reached 100+ customers, 13 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 Gallatin County reported on EIA Form 861 for 2024, 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) | 2024 | 3.9 hrs | 1.30 | 2.0 hrs | 0.95 |
| Fall River Rural Elec Coop Inc | 2024 | 14 min | 0.11 | 10 min | 0.08 |
| 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 n/a of Montana's customers in 2024; 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, 2024, 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/2024/montana/gallatin-county