County annual report · FIPS 30085
2022 Roosevelt County, MT Power Outage Report
In 2022, customers in Roosevelt County, MT went without power for an average of 1.3 hours, a total of 9,504 customer-hours (Montana average 3.5 hours). That ranks 44th worst of 50 Montana counties and 2586th of 2,976 nationally.
Compared with MT, the US and 2021
Coverage line is EAGLE-I's share of Montana customers tracked each year.
Biggest outages in Roosevelt County, 2022
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | April 24, 2022 16:00 | April 24, 2022 19:15 | 3h 15m | 1,289 | 3,536 |
| 2 | November 12, 2022 14:00 | November 12, 2022 16:30 | 2h 30m | 483 | 1,200 |
| 3 | September 22, 2022 21:30 | September 23, 2022 00:15 | 2h 45m | 474 | 1,296 |
| 4 | April 3, 2022 12:00 | April 3, 2022 14:00 | 2h | 378 | 750 |
| 5 | July 13, 2022 19:00 | July 13, 2022 19:15 | 15m | 344 | 86 |
| 6 | August 18, 2022 04:15 | August 18, 2022 09:30 | 5h 15m | 275 | 640 |
| 7 | May 23, 2022 18:30 | May 23, 2022 18:45 | 15m | 266 | 67 |
| 8 | June 6, 2022 06:30 | June 6, 2022 09:15 | 2h 45m | 239 | 539 |
| 9 | January 26, 2022 22:00 | January 27, 2022 00:30 | 2h 30m | 115 | 288 |
| 10 | May 13, 2022 19:30 | May 13, 2022 22:00 | 2h 30m | 53 | 131 |
Outage episodes by size in 2022: 9 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 Roosevelt County reported on EIA Form 861 for 2022, 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 | 2022 | 120.4 hrs | 2.84 | 2.0 hrs | 1.12 |
| 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 76% of Montana's customers in 2022; 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, 2022, 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/2022/montana/roosevelt-county