County annual report · FIPS 30081
2025 Ravalli County, MT Power Outage Report
In 2025, customers in Ravalli County, MT went without power for an average of 6.7 hours, a total of 168K customer-hours (Montana average 6.8 hours). That ranks 26th worst of 51 Montana counties and 1195th of 3,000 nationally.
Compared with MT, the US and 2024
Coverage line is EAGLE-I's share of Montana customers tracked each year.
Biggest outages in Ravalli County, 2025
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | December 17, 2025 16:00 | December 23, 2025 04:00 | 5d 12h | 8,921 | 136K |
| 2 | October 30, 2025 22:45 | October 31, 2025 03:45 | 5h | 2,492 | 2,248 |
| 3 | August 29, 2025 16:15 | September 12, 2025 19:15 | 14d 3h | 856 | 5,528 |
| 4 | April 9, 2025 17:30 | April 10, 2025 04:00 | 10h 30m | 827 | 1,259 |
| 5 | July 8, 2025 15:00 | July 8, 2025 17:45 | 2h 45m | 781 | 968 |
| 6 | February 13, 2025 21:45 | February 14, 2025 00:15 | 2h 30m | 543 | 1,129 |
| 7 | June 12, 2025 06:15 | June 12, 2025 10:15 | 4h | 518 | 2,072 |
| 8 | February 9, 2025 01:30 | February 9, 2025 05:15 | 3h 45m | 436 | 872 |
| 9 | May 10, 2025 07:15 | May 10, 2025 12:45 | 5h 30m | 358 | 1,969 |
| 10 | July 28, 2025 21:15 | July 29, 2025 00:30 | 3h 15m | 262 | 655 |
Outage episodes by size in 2025: 25 reached 100+ customers, 2 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 Ravalli County reported on EIA Form 861 for 2025, 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 |
| Ravalli County Elec Coop, Inc | 2018 | 4.2 hrs | 1.53 | 2.5 hrs | 1.41 |
| NorthWestern Energy | - | - | - | - | - |
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 2025; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 25,043 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. Ravalli County has data for 2019–2025.
Cite this report
MassOutage (massoutage.com), Ravalli County, MT annual power outage report, 2025, 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/2025/montana/ravalli-county