County annual report · FIPS 19137
2025 Montgomery County, IA Power Outage Report
In 2025, customers in Montgomery County, IA went without power for an average of 2.4 hours, a total of 14K customer-hours (Iowa average 2.9 hours). That ranks 61st worst of 99 Iowa counties and 2249th of 3,000 nationally.
Compared with IA, the US and 2024
Coverage line is EAGLE-I's share of Iowa customers tracked each year.
Biggest outages in Montgomery 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 | March 19, 2025 19:45 | March 20, 2025 01:45 | 6h | 4,108 | 1,087 |
| 2 | October 6, 2025 00:30 | October 6, 2025 18:45 | 18h 15m | 621 | 909 |
| 3 | June 11, 2025 19:45 | June 12, 2025 13:15 | 17h 30m | 473 | 3,354 |
| 4 | March 14, 2025 22:15 | March 15, 2025 02:00 | 3h 45m | 365 | 782 |
| 5 | March 5, 2025 03:15 | March 5, 2025 21:45 | 18h 30m | 290 | 1,071 |
| 6 | July 8, 2025 04:30 | July 8, 2025 08:15 | 3h 45m | 276 | 866 |
| 7 | September 10, 2025 16:30 | September 10, 2025 18:15 | 1h 45m | 226 | 242 |
| 8 | October 8, 2025 21:15 | October 8, 2025 21:45 | 30m | 202 | 101 |
| 9 | May 20, 2025 00:30 | May 20, 2025 07:45 | 7h 15m | 194 | 225 |
| 10 | June 20, 2025 06:45 | June 20, 2025 10:30 | 3h 45m | 172 | 496 |
Outage episodes by size in 2025: 18 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 Montgomery 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 |
|---|---|---|---|---|---|
| MidAmerican Energy Co | 2024 | 5.5 hrs | 1.42 | 1.7 hrs | 0.94 |
| Southwest Iowa Rural Elec Coop | 2018 | 2.4 hrs | 1.69 | 1.6 hrs | 1.21 |
| Interstate Power and Light Co | - | - | - | - | - |
| City of Stanton - (IA) | - | - | - | - | - |
| City of Villisca - (IA) | - | - | - | - | - |
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 Iowa's customers in 2025; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 5,724 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. Montgomery County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Montgomery County, IA 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/iowa/montgomery-county