County annual report · FIPS 19129
2025 Mills County, IA Power Outage Report
In 2025, customers in Mills County, IA went without power for an average of 2.5 hours, a total of 18K customer-hours (Iowa average 2.9 hours). That ranks 60th worst of 99 Iowa counties and 2222nd 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 Mills 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 | November 25, 2025 23:45 | November 26, 2025 11:00 | 11h 15m | 941 | 4,255 |
| 2 | August 23, 2025 03:45 | August 23, 2025 04:00 | 15m | 624 | 156 |
| 3 | July 6, 2025 01:00 | July 6, 2025 05:30 | 4h 30m | 333 | 584 |
| 4 | March 19, 2025 19:15 | March 20, 2025 06:30 | 11h 15m | 328 | 1,436 |
| 5 | March 5, 2025 01:45 | March 6, 2025 12:45 | 1d 11h | 296 | 2,312 |
| 6 | March 14, 2025 22:00 | March 15, 2025 03:00 | 5h | 249 | 617 |
| 7 | June 20, 2025 06:30 | June 20, 2025 16:30 | 10h | 243 | 851 |
| 8 | May 19, 2025 05:00 | May 19, 2025 15:15 | 10h 15m | 242 | 1,274 |
| 9 | November 29, 2025 15:15 | November 29, 2025 20:15 | 5h | 181 | 369 |
| 10 | June 17, 2025 02:15 | June 17, 2025 08:15 | 6h | 168 | 714 |
Outage episodes by size in 2025: 13 reached 100+ customers, 0 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 Mills 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 |
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 ÷ 7,270 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. Mills County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Mills 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/mills-county