County annual report · FIPS 30031
2019 Gallatin County, MT Power Outage Report
In 2019, customers in Gallatin County, MT went without power for an average of 0.0 hours, a total of 796 customer-hours (Montana average 0.6 hours). That ranks 26th worst of 38 Montana counties and 2895th of 2,945 nationally.
Compared with MT, the US
Coverage line is EAGLE-I's share of Montana customers tracked each year.
Biggest outages in Gallatin County, 2019
The 9 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | December 30, 2019 03:30 | December 30, 2019 09:30 | 6h | 276 | 780 |
| 2 | February 10, 2019 06:30 | February 10, 2019 06:45 | 15m | 1 | 0 |
| 3 | July 28, 2019 02:30 | July 28, 2019 04:45 | 2h 15m | 1 | 2 |
| 4 | August 11, 2019 19:15 | August 11, 2019 19:30 | 15m | 1 | 0 |
| 5 | August 23, 2019 19:15 | August 23, 2019 20:30 | 1h 15m | 1 | 1 |
| 6 | September 10, 2019 19:30 | September 11, 2019 01:00 | 5h 30m | 1 | 6 |
| 7 | September 13, 2019 17:15 | September 13, 2019 20:15 | 3h | 1 | 3 |
| 8 | December 28, 2019 02:45 | December 28, 2019 05:45 | 3h | 1 | 3 |
| 9 | December 30, 2019 15:30 | December 30, 2019 16:00 | 30m | 1 | 1 |
Outage episodes by size in 2019: 1 reached 100+ customers, 0 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 Gallatin County reported on EIA Form 861 for 2019, 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) | 2018 | 1.7 hrs | 1.08 | 1.7 hrs | 1.08 |
| Fall River Rural Elec Coop Inc | 2018 | 4.6 hrs | 2.31 | 4.2 hrs | 2.11 |
| 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 75% of Montana's customers in 2019; 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, 2019, 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/2019/montana/gallatin-county