County annual report · FIPS 30001
2022 Beaverhead County, MT Power Outage Report
In 2022, customers in Beaverhead County, MT went without power for an average of 5.6 hours, a total of 20K customer-hours (Montana average 3.5 hours). That ranks 21st worst of 50 Montana counties and 1288th 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 Beaverhead 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 | July 13, 2022 20:15 | July 13, 2022 21:30 | 1h 15m | 2,519 | 3,149 |
| 2 | September 22, 2022 13:00 | September 22, 2022 15:45 | 2h 45m | 2,518 | 6,925 |
| 3 | November 25, 2022 08:00 | November 25, 2022 09:45 | 1h 45m | 2,518 | 3,993 |
| 4 | June 17, 2022 17:15 | June 17, 2022 21:45 | 4h 30m | 707 | 3,007 |
| 5 | July 23, 2022 02:30 | July 23, 2022 05:15 | 2h 45m | 476 | 1,309 |
| 6 | May 1, 2022 12:45 | May 1, 2022 16:00 | 3h 15m | 417 | 388 |
| 7 | October 23, 2022 01:45 | October 23, 2022 09:30 | 7h 45m | 131 | 678 |
| 8 | August 2, 2022 21:15 | August 2, 2022 23:00 | 1h 45m | 66 | 67 |
| 9 | June 19, 2022 19:45 | June 19, 2022 23:30 | 3h 45m | 60 | 107 |
| 10 | November 23, 2022 16:30 | November 23, 2022 19:30 | 3h | 24 | 72 |
Outage episodes by size in 2022: 7 reached 100+ customers, 3 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 Beaverhead 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 |
|---|---|---|---|---|---|
| NorthWestern Energy LLC - (MT) | 2022 | 2.2 hrs | 1.14 | 2.0 hrs | 1.09 |
| NorthWestern Energy | - | - | - | - | - |
| Vigilante 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 ÷ 3,612 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. Beaverhead County has data for 2019–2025.
Cite this report
MassOutage (massoutage.com), Beaverhead 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/beaverhead-county