County annual report · FIPS 30079
2024 Prairie County, MT Power Outage Report
In 2024, customers in Prairie County, MT went without power for an average of 8.9 hours, a total of 6,731 customer-hours (Montana average 8.5 hours). That ranks 15th worst of 51 Montana counties and 1028th 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 Prairie 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 | October 17, 2024 19:00 | October 17, 2024 23:00 | 4h | 468 | 1,859 |
| 2 | September 18, 2024 02:30 | September 18, 2024 02:45 | 15m | 465 | 116 |
| 3 | July 14, 2024 00:00 | July 14, 2024 03:30 | 3h 30m | 464 | 938 |
| 4 | June 25, 2024 16:00 | June 25, 2024 19:00 | 3h | 462 | 1,132 |
| 5 | June 2, 2024 11:00 | June 2, 2024 11:15 | 15m | 460 | 115 |
| 6 | June 24, 2024 06:30 | June 24, 2024 06:45 | 15m | 459 | 115 |
| 7 | August 22, 2024 03:15 | August 22, 2024 03:30 | 15m | 459 | 115 |
| 8 | August 21, 2024 04:00 | August 21, 2024 04:15 | 15m | 456 | 114 |
| 9 | June 27, 2024 22:30 | June 28, 2024 02:00 | 3h 30m | 455 | 1,413 |
| 10 | January 15, 2024 18:00 | January 15, 2024 19:30 | 1h 30m | 109 | 164 |
Outage episodes by size in 2024: 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 Prairie 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 |
| 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 ÷ 758 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. Prairie County has data for 2017–2025.
Cite this report
MassOutage (massoutage.com), Prairie 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/prairie-county