County annual report · FIPS 30031
2023 Gallatin County, MT Power Outage Report
In 2023, customers in Gallatin County, MT went without power for an average of 0.6 hours, a total of 60K customer-hours (Montana average 1.8 hours). That ranks 42nd worst of 50 Montana counties and 2793rd of 2,977 nationally.
Compared with MT, the US and 2022
Coverage line is EAGLE-I's share of Montana customers tracked each year.
Biggest outages in Gallatin County, 2023
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | June 12, 2023 15:00 | June 13, 2023 03:45 | 12h 45m | 1,615 | 3,090 |
| 2 | October 27, 2023 22:30 | October 28, 2023 09:00 | 10h 30m | 1,284 | 599 |
| 3 | March 21, 2023 15:45 | March 22, 2023 01:00 | 9h 15m | 1,180 | 2,606 |
| 4 | September 13, 2023 16:45 | September 13, 2023 21:45 | 5h | 907 | 695 |
| 5 | April 11, 2023 15:00 | April 11, 2023 20:15 | 5h 15m | 906 | 1,146 |
| 6 | April 11, 2023 23:15 | April 12, 2023 01:00 | 1h 45m | 818 | 1,227 |
| 7 | July 23, 2023 23:15 | July 24, 2023 04:15 | 5h | 804 | 1,716 |
| 8 | August 28, 2023 20:45 | August 29, 2023 01:00 | 4h 15m | 719 | 1,361 |
| 9 | December 7, 2023 15:00 | December 8, 2023 00:45 | 9h 45m | 412 | 2,318 |
| 10 | January 28, 2023 21:15 | January 29, 2023 03:45 | 6h 30m | 370 | 1,305 |
Outage episodes by size in 2023: 61 reached 100+ customers, 3 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 2023, 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) | 2023 | 1.7 hrs | 0.93 | 1.7 hrs | 0.93 |
| Fall River Rural Elec Coop Inc | 2023 | 12 min | 0.11 | 11 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 n/a of Montana's customers in 2023; 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, 2023, 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/2023/montana/gallatin-county