County annual report · FIPS 30075
2024 Powder River County, MT Power Outage Report
In 2024, customers in Powder River County, MT went without power for an average of 2.1 hours, a total of 1,203 customer-hours (Montana average 8.5 hours). That ranks 39th worst of 51 Montana counties and 2389th 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 Powder River 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 | August 26, 2024 19:45 | August 27, 2024 02:00 | 6h 15m | 34 | 108 |
| 2 | October 2, 2024 13:15 | October 3, 2024 00:30 | 11h 15m | 29 | 326 |
| 3 | July 21, 2024 13:30 | July 21, 2024 18:00 | 4h 30m | 22 | 99 |
| 4 | September 1, 2024 21:45 | September 2, 2024 00:30 | 2h 45m | 22 | 61 |
| 5 | October 3, 2024 13:30 | October 3, 2024 17:00 | 3h 30m | 22 | 77 |
| 6 | October 7, 2024 15:00 | October 7, 2024 17:00 | 2h | 22 | 44 |
| 7 | December 19, 2024 17:15 | December 19, 2024 18:15 | 1h | 22 | 22 |
| 8 | April 7, 2024 07:15 | April 7, 2024 14:00 | 6h 45m | 8 | 54 |
| 9 | April 16, 2024 05:30 | April 16, 2024 05:45 | 15m | 8 | 2 |
| 10 | April 17, 2024 11:15 | April 17, 2024 15:15 | 4h | 8 | 32 |
Outage episodes by size in 2024: 0 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 Powder River 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 |
|---|---|---|---|---|---|
| Black Hills Power, Inc. | 2024 | 40 min | 0.70 | 40 min | 0.70 |
| Powder River Energy Corp | 2024 | 8.3 hrs | 2.88 | 4.9 hrs | 2.24 |
| Tongue River Electric Coop Inc | - | - | - | - | - |
| Southeast 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 ÷ 583 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. Powder River County has data for 2016–2025.
Cite this report
MassOutage (massoutage.com), Powder River 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/powder-river-county