County annual report · FIPS 30085
2025 Roosevelt County, MT Power Outage Report
In 2025, customers in Roosevelt County, MT went without power for an average of 0.2 hours, a total of 1,143 customer-hours (Montana average 6.8 hours). That ranks 46th worst of 51 Montana counties and 2927th of 3,000 nationally.
Compared with MT, the US and 2024
Coverage line is EAGLE-I's share of Montana customers tracked each year.
Biggest outages in Roosevelt County, 2025
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | December 18, 2025 02:30 | December 18, 2025 13:45 | 11h 15m | 167 | 168 |
| 2 | April 28, 2025 08:45 | April 28, 2025 11:00 | 2h 15m | 157 | 316 |
| 3 | November 2, 2025 18:45 | November 2, 2025 22:30 | 3h 45m | 60 | 208 |
| 4 | January 11, 2025 11:30 | January 11, 2025 12:00 | 30m | 53 | 15 |
| 5 | August 26, 2025 21:00 | August 26, 2025 21:45 | 45m | 24 | 18 |
| 6 | July 3, 2025 04:00 | July 3, 2025 04:30 | 30m | 19 | 6 |
| 7 | June 18, 2025 01:45 | June 18, 2025 03:15 | 1h 30m | 16 | 24 |
| 8 | April 2, 2025 17:00 | April 2, 2025 17:45 | 45m | 14 | 11 |
| 9 | June 26, 2025 13:45 | June 26, 2025 18:00 | 4h 15m | 14 | 60 |
| 10 | May 30, 2025 18:15 | May 30, 2025 19:00 | 45m | 12 | 9 |
Outage episodes by size in 2025: 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 Roosevelt County reported on EIA Form 861 for 2025, 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 |
| Mountrail-Williams Elec Coop | 2024 | 4.7 hrs | 1.29 | 2.4 hrs | 1.12 |
| WAPA-- Western Area Power Administration | - | - | - | - | - |
| McCone Electric Coop Inc | - | - | - | - | - |
| Sheridan Electric Coop, Inc | - | - | - | - | - |
| Lower Yellowstone R E A, Inc | - | - | - | - | - |
| NorVal Electric Cooperative, 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 2025; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 7,252 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. Roosevelt County has data for 2017–2025.
Cite this report
MassOutage (massoutage.com), Roosevelt County, MT annual power outage report, 2025, 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/2025/montana/roosevelt-county