County annual report · FIPS 30081
2024 Ravalli County, MT Power Outage Report
In 2024, customers in Ravalli County, MT went without power for an average of 12.6 hours, a total of 317K customer-hours (Montana average 8.5 hours). That ranks 10th worst of 51 Montana counties and 756th 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 Ravalli 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 | August 23, 2024 21:00 | August 27, 2024 02:45 | 3d 5h | 9,241 | 167K |
| 2 | September 3, 2024 18:15 | September 4, 2024 22:30 | 1d 4h | 4,480 | 11K |
| 3 | March 2, 2024 17:15 | March 2, 2024 19:15 | 2h | 2,999 | 5,256 |
| 4 | October 4, 2024 22:15 | October 7, 2024 17:45 | 2d 19h | 2,481 | 41K |
| 5 | July 25, 2024 02:45 | July 31, 2024 02:15 | 5d 23h | 2,316 | 56K |
| 6 | May 23, 2024 06:15 | May 24, 2024 00:15 | 18h | 1,621 | 12K |
| 7 | January 2, 2024 16:00 | January 2, 2024 21:15 | 5h 15m | 1,582 | 452 |
| 8 | October 18, 2024 16:45 | October 18, 2024 17:15 | 30m | 1,163 | 582 |
| 9 | August 27, 2024 06:00 | August 28, 2024 22:30 | 1d 16h | 813 | 2,175 |
| 10 | May 28, 2024 21:45 | May 29, 2024 04:15 | 6h 30m | 617 | 2,203 |
Outage episodes by size in 2024: 26 reached 100+ customers, 8 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 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 |
| 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 2024; 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, 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/ravalli-county