County annual report · FIPS 30001
2019 Beaverhead County, MT Power Outage Report
In 2019, customers in Beaverhead County, MT went without power for an average of 0.0 hours, a total of 56 customer-hours (Montana average 0.6 hours). That ranks 25th worst of 38 Montana counties and 2881st of 2,945 nationally.
Compared with MT, the US
Coverage line is EAGLE-I's share of Montana customers tracked each year.
Biggest outages in Beaverhead 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 8, 2019 14:00 | July 8, 2019 15:15 | 1h 15m | 32 | 25 |
| 2 | July 23, 2019 16:15 | July 23, 2019 16:30 | 15m | 4 | 1 |
| 3 | December 27, 2019 03:30 | December 27, 2019 10:45 | 7h 15m | 2 | 15 |
| 4 | January 16, 2019 16:45 | January 16, 2019 18:00 | 1h 15m | 1 | 1 |
| 5 | January 25, 2019 20:00 | January 25, 2019 21:30 | 1h 30m | 1 | 2 |
| 6 | April 17, 2019 21:00 | April 17, 2019 22:00 | 1h | 1 | 1 |
| 7 | May 21, 2019 13:45 | May 21, 2019 16:30 | 2h 45m | 1 | 3 |
| 8 | July 29, 2019 23:15 | July 29, 2019 23:30 | 15m | 1 | 0 |
| 9 | September 5, 2019 16:00 | September 5, 2019 19:45 | 3h 45m | 1 | 4 |
| 10 | October 12, 2019 16:30 | October 12, 2019 18:15 | 1h 45m | 1 | 2 |
Outage episodes by size in 2019: 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 Beaverhead 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 |
|---|---|---|---|---|---|
| NorthWestern Energy LLC - (MT) | 2018 | 1.7 hrs | 1.08 | 1.7 hrs | 1.08 |
| 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 75% of Montana's customers in 2019; 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, 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/); EIA Form 861 (utility reliability) (https://www.eia.gov/electricity/data/eia861/). https://massoutage.com/reports/2019/montana/beaverhead-county