County annual report · FIPS 30085
2023 Roosevelt County, MT Power Outage Report
In 2023, customers in Roosevelt County, MT went without power for an average of 1.0 hours, a total of 6,895 customer-hours (Montana average 1.8 hours). That ranks 36th worst of 50 Montana counties and 2694th 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 Roosevelt 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 | November 16, 2023 13:00 | November 16, 2023 14:00 | 1h | 786 | 213 |
| 2 | November 16, 2023 08:15 | November 16, 2023 10:00 | 1h 45m | 781 | 261 |
| 3 | June 16, 2023 06:15 | June 16, 2023 13:15 | 7h | 467 | 3,266 |
| 4 | July 30, 2023 23:30 | August 1, 2023 02:15 | 1d 2h | 158 | 1,257 |
| 5 | March 28, 2023 22:30 | March 29, 2023 02:00 | 3h 30m | 119 | 329 |
| 6 | June 8, 2023 16:00 | June 8, 2023 17:15 | 1h 15m | 117 | 119 |
| 7 | April 2, 2023 08:15 | April 2, 2023 12:30 | 4h 15m | 116 | 466 |
| 8 | September 2, 2023 23:00 | September 3, 2023 01:00 | 2h | 108 | 216 |
| 9 | June 28, 2023 19:00 | June 28, 2023 21:15 | 2h 15m | 107 | 238 |
| 10 | August 21, 2023 18:15 | August 21, 2023 21:15 | 3h | 60 | 180 |
Outage episodes by size in 2023: 9 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 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 |
|---|---|---|---|---|---|
| Mountrail-Williams Elec Coop | 2023 | 4.0 hrs | 1.39 | 2.2 hrs | 1.10 |
| WAPA-- Western Area Power Administration | - | - | - | - | - |
| Montana-Dakota Utilities Co | - | - | - | - | - |
| 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 2023; 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, 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/roosevelt-county