County annual report · FIPS 30065
2024 Musselshell County, MT Power Outage Report
In 2024, customers in Musselshell County, MT went without power for an average of 6.4 hours, a total of 15K customer-hours (Montana average 8.5 hours). That ranks 22nd worst of 51 Montana counties and 1355th 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 Musselshell 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 | November 14, 2024 06:15 | November 14, 2024 10:45 | 4h 30m | 2,012 | 9,054 |
| 2 | August 19, 2024 13:00 | August 19, 2024 19:00 | 6h | 300 | 757 |
| 3 | September 12, 2024 23:00 | September 13, 2024 02:30 | 3h 30m | 300 | 270 |
| 4 | April 18, 2024 16:45 | April 19, 2024 04:15 | 11h 30m | 164 | 1,507 |
| 5 | July 19, 2024 02:30 | July 19, 2024 10:30 | 8h | 132 | 464 |
| 6 | June 22, 2024 05:00 | June 23, 2024 12:15 | 1d 7h | 87 | 1,482 |
| 7 | May 24, 2024 10:30 | May 24, 2024 12:45 | 2h 15m | 84 | 168 |
| 8 | September 4, 2024 16:15 | September 4, 2024 18:30 | 2h 15m | 83 | 187 |
| 9 | May 7, 2024 16:15 | May 9, 2024 06:15 | 1d 14h | 58 | 629 |
| 10 | January 14, 2024 19:30 | January 14, 2024 20:45 | 1h 15m | 52 | 52 |
Outage episodes by size in 2024: 5 reached 100+ customers, 1 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 Musselshell 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 |
| Fergus Electric Coop, Inc | - | - | - | - | - |
| Yellowstone Valley Elec Co-op | - | - | - | - | - |
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 ÷ 2,362 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. Musselshell County has data for 2020–2025.
Cite this report
MassOutage (massoutage.com), Musselshell 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/musselshell-county