County annual report · FIPS 30075
2022 Powder River County, MT Power Outage Report
In 2022, customers in Powder River County, MT went without power for an average of 2.3 hours, a total of 1,330 customer-hours (Montana average 3.5 hours). That ranks 33rd worst of 50 Montana counties and 2185th 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 Powder River 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 | June 12, 2022 21:15 | June 13, 2022 01:00 | 3h 45m | 59 | 127 |
| 2 | April 12, 2022 00:30 | April 12, 2022 02:30 | 2h | 32 | 64 |
| 3 | April 23, 2022 03:45 | April 23, 2022 04:00 | 15m | 32 | 8 |
| 4 | April 23, 2022 10:45 | April 23, 2022 17:30 | 6h 45m | 32 | 208 |
| 5 | April 29, 2022 05:45 | April 29, 2022 08:15 | 2h 30m | 32 | 80 |
| 6 | April 29, 2022 16:15 | April 29, 2022 18:00 | 1h 45m | 32 | 56 |
| 7 | June 13, 2022 14:30 | June 13, 2022 14:45 | 15m | 32 | 8 |
| 8 | July 6, 2022 22:30 | July 7, 2022 00:00 | 1h 30m | 32 | 48 |
| 9 | July 19, 2022 13:30 | July 19, 2022 13:45 | 15m | 32 | 8 |
| 10 | September 1, 2022 21:00 | September 1, 2022 23:15 | 2h 15m | 32 | 64 |
Outage episodes by size in 2022: 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 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 |
|---|---|---|---|---|---|
| Black Hills Power, Inc. | 2022 | 1.8 hrs | 0.88 | 1.6 hrs | 0.85 |
| Powder River Energy Corp | 2022 | 5.1 hrs | 2.30 | 4.4 hrs | 2.18 |
| 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 76% of Montana's customers in 2022; 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, 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/powder-river-county