County annual report · FIPS 30061
2024 Mineral County, MT Power Outage Report
In 2024, customers in Mineral County, MT went without power for an average of 18.8 hours, a total of 46K customer-hours (Montana average 8.5 hours). That ranks 5th worst of 51 Montana counties and 533rd 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 Mineral 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 | July 25, 2024 03:15 | July 26, 2024 18:30 | 1d 15h | 2,867 | 35K |
| 2 | December 9, 2024 01:00 | December 9, 2024 08:30 | 7h 30m | 450 | 1,985 |
| 3 | September 26, 2024 01:00 | September 26, 2024 10:45 | 9h 45m | 417 | 2,481 |
| 4 | August 13, 2024 11:30 | August 13, 2024 15:45 | 4h 15m | 352 | 1,268 |
| 5 | February 26, 2024 04:30 | February 26, 2024 07:15 | 2h 45m | 252 | 693 |
| 6 | May 17, 2024 23:00 | May 18, 2024 04:30 | 5h 30m | 210 | 1,140 |
| 7 | January 12, 2024 22:15 | January 13, 2024 01:00 | 2h 45m | 108 | 203 |
| 8 | January 12, 2024 18:30 | January 12, 2024 20:30 | 2h | 94 | 188 |
| 9 | November 12, 2024 19:00 | November 13, 2024 00:15 | 5h 15m | 88 | 419 |
| 10 | July 21, 2024 22:30 | July 22, 2024 02:30 | 4h | 73 | 275 |
Outage episodes by size in 2024: 7 reached 100+ customers, 1 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 Mineral 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 |
|---|---|---|---|---|---|
| NorthWestern Energy LLC - (MT) | 2024 | 3.9 hrs | 1.30 | 2.0 hrs | 0.95 |
| Missoula Electric Coop, Inc | 2024 | 26.8 hrs | 3.59 | 8.4 hrs | 2.19 |
| Bonneville Power Administration | - | - | - | - | - |
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 ÷ 2,455 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. Mineral County has data for 2017–2025.
Cite this report
MassOutage (massoutage.com), Mineral 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/mineral-county