County annual report · FIPS 30085
2019 Roosevelt County, MT Power Outage Report
In 2019, customers in Roosevelt County, MT went without power for an average of 1.1 hours, a total of 8,141 customer-hours (Montana average 0.6 hours). That ranks 12th worst of 38 Montana counties and 2445th of 2,945 nationally.
Compared with MT, the US and 2018
Coverage line is EAGLE-I's share of Montana customers tracked each year.
Biggest outages in Roosevelt County, 2019
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | July 9, 2019 07:00 | July 9, 2019 10:15 | 3h 15m | 647 | 1,728 |
| 2 | September 24, 2019 22:00 | September 25, 2019 01:00 | 3h | 371 | 498 |
| 3 | October 8, 2019 22:15 | October 9, 2019 01:15 | 3h | 369 | 323 |
| 4 | June 28, 2019 06:15 | June 28, 2019 13:30 | 7h 15m | 186 | 265 |
| 5 | August 15, 2019 04:15 | August 15, 2019 09:15 | 5h | 180 | 891 |
| 6 | August 12, 2019 06:00 | August 12, 2019 06:15 | 15m | 158 | 40 |
| 7 | July 11, 2019 02:45 | July 11, 2019 03:00 | 15m | 118 | 30 |
| 8 | May 3, 2019 19:45 | May 3, 2019 20:15 | 30m | 117 | 59 |
| 9 | September 26, 2019 07:15 | September 26, 2019 07:30 | 15m | 116 | 29 |
| 10 | April 30, 2019 10:45 | April 30, 2019 11:00 | 15m | 113 | 28 |
Outage episodes by size in 2019: 12 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 2019, 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 |
|---|---|---|---|---|---|
| WAPA-- Western Area Power Administration | - | - | - | - | - |
| Montana-Dakota Utilities Co | - | - | - | - | - |
| McCone Electric Coop Inc | - | - | - | - | - |
| Mountrail-Williams Elec Coop | - | - | - | - | - |
| 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 75% of Montana's customers in 2019; 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, 2019, 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/). https://massoutage.com/reports/2019/montana/roosevelt-county