County annual report · FIPS 30087
2024 Rosebud County, MT Power Outage Report
In 2024, customers in Rosebud County, MT went without power for an average of 1.6 hours, a total of 7,419 customer-hours (Montana average 8.5 hours). That ranks 40th worst of 51 Montana counties and 2528th 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 Rosebud 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 | May 7, 2024 23:00 | May 9, 2024 20:15 | 1d 21h | 171 | 2,383 |
| 2 | June 22, 2024 12:00 | June 24, 2024 05:15 | 1d 17h | 145 | 3,126 |
| 3 | May 24, 2024 10:45 | May 24, 2024 12:45 | 2h | 85 | 170 |
| 4 | September 4, 2024 16:15 | September 4, 2024 18:30 | 2h 15m | 85 | 191 |
| 5 | November 14, 2024 06:15 | November 14, 2024 10:45 | 4h 30m | 84 | 378 |
| 6 | September 3, 2024 20:45 | September 3, 2024 22:00 | 1h 15m | 67 | 84 |
| 7 | May 4, 2024 00:15 | May 4, 2024 01:00 | 45m | 52 | 39 |
| 8 | January 31, 2024 07:30 | January 31, 2024 08:15 | 45m | 49 | 37 |
| 9 | October 15, 2024 13:15 | October 15, 2024 16:15 | 3h | 46 | 99 |
| 10 | December 30, 2024 17:30 | December 30, 2024 20:30 | 3h | 33 | 75 |
Outage episodes by size in 2024: 2 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 Rosebud 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 |
|---|---|---|---|---|---|
| Montana-Dakota Utilities Co | 2024 | 2.9 hrs | 1.26 | 2.1 hrs | 1.10 |
| NorthWestern Energy LLC - (MT) | 2024 | 3.9 hrs | 1.30 | 2.0 hrs | 0.95 |
| Mid-Yellowstone Elec Coop, Inc | 2018 | 4.5 hrs | 3.82 | 4.5 hrs | 3.82 |
| WAPA-- Western Area Power Administration | - | - | - | - | - |
| McCone Electric Coop Inc | - | - | - | - | - |
| Tongue River 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 ÷ 4,647 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. Rosebud County has data for 2017–2025.
Cite this report
MassOutage (massoutage.com), Rosebud 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/rosebud-county