County annual report · FIPS 30015
2024 Chouteau County, MT Power Outage Report
In 2024, customers in Chouteau County, MT went without power for an average of 16.4 hours, a total of 32K customer-hours (Montana average 8.5 hours). That ranks 7th worst of 51 Montana counties and 621st 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 Chouteau 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 | October 5, 2024 02:30 | October 7, 2024 16:30 | 2d 14h | 1,168 | 11K |
| 2 | May 7, 2024 20:30 | May 11, 2024 00:45 | 3d 4h | 545 | 5,745 |
| 3 | August 23, 2024 23:45 | August 24, 2024 05:15 | 5h 30m | 531 | 1,000 |
| 4 | March 12, 2024 16:00 | March 12, 2024 19:45 | 3h 45m | 496 | 1,737 |
| 5 | May 14, 2024 19:30 | May 15, 2024 00:45 | 5h 15m | 495 | 2,599 |
| 6 | July 25, 2024 15:45 | July 25, 2024 18:30 | 2h 45m | 495 | 1,361 |
| 7 | October 22, 2024 15:15 | October 22, 2024 20:30 | 5h 15m | 483 | 859 |
| 8 | June 27, 2024 15:15 | June 27, 2024 22:00 | 6h 45m | 481 | 1,326 |
| 9 | May 13, 2024 21:30 | May 14, 2024 00:45 | 3h 15m | 480 | 1,441 |
| 10 | December 19, 2024 00:30 | December 19, 2024 03:30 | 3h | 479 | 1,437 |
Outage episodes by size in 2024: 12 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 Chouteau 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 |
| WAPA-- Western Area Power Administration | - | - | - | - | - |
| NorthWestern Energy | - | - | - | - | - |
| Fergus Electric Coop, Inc | - | - | - | - | - |
| Sun River Electric Coop, Inc | - | - | - | - | - |
| Hill County 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 n/a of Montana's customers in 2024; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 1,959 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. Chouteau County has data for 2020–2025.
Cite this report
MassOutage (massoutage.com), Chouteau 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/chouteau-county