County annual report · FIPS 30041
2024 Hill County, MT Power Outage Report
In 2024, customers in Hill County, MT went without power for an average of 5.0 hours, a total of 40K customer-hours (Montana average 8.5 hours). That ranks 26th worst of 51 Montana counties and 1599th 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 Hill 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 8, 2024 21:45 | August 9, 2024 00:00 | 2h 15m | 6,203 | 11K |
| 2 | October 5, 2024 02:30 | October 5, 2024 12:30 | 10h | 2,269 | 12K |
| 3 | June 18, 2024 22:30 | June 19, 2024 00:30 | 2h | 1,070 | 982 |
| 4 | September 18, 2024 02:30 | September 18, 2024 04:45 | 2h 15m | 880 | 1,639 |
| 5 | September 30, 2024 17:45 | September 30, 2024 19:00 | 1h 15m | 880 | 1,100 |
| 6 | April 29, 2024 03:30 | April 29, 2024 05:45 | 2h 15m | 879 | 1,759 |
| 7 | August 4, 2024 03:45 | August 4, 2024 14:45 | 11h | 426 | 1,803 |
| 8 | August 2, 2024 08:45 | August 2, 2024 14:15 | 5h 30m | 247 | 1,359 |
| 9 | May 8, 2024 19:00 | May 9, 2024 00:45 | 5h 45m | 245 | 797 |
| 10 | May 7, 2024 16:45 | May 8, 2024 05:00 | 12h 15m | 237 | 623 |
Outage episodes by size in 2024: 18 reached 100+ customers, 3 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 Hill 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 | - | - | - | - | - |
| 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 ÷ 7,876 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. Hill County has data for 2020–2025.
Cite this report
MassOutage (massoutage.com), Hill 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/hill-county