County annual report · FIPS 19037
2025 Chickasaw County, IA Power Outage Report
In 2025, customers in Chickasaw County, IA went without power for an average of 4.0 hours, a total of 28K customer-hours (Iowa average 2.9 hours). That ranks 37th worst of 99 Iowa counties and 1783rd 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 Chickasaw 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 | July 25, 2025 19:30 | July 28, 2025 17:15 | 2d 21h | 1,130 | 2,443 |
| 2 | February 18, 2025 22:15 | February 18, 2025 22:45 | 30m | 1,053 | 267 |
| 3 | March 19, 2025 21:30 | March 19, 2025 23:00 | 1h 30m | 424 | 426 |
| 4 | October 3, 2025 16:45 | October 6, 2025 11:00 | 2d 18h | 309 | 20K |
| 5 | July 30, 2025 01:00 | July 30, 2025 09:00 | 8h | 249 | 550 |
| 6 | May 9, 2025 22:30 | May 10, 2025 00:45 | 2h 15m | 242 | 321 |
| 7 | July 29, 2025 06:15 | July 29, 2025 10:45 | 4h 30m | 195 | 360 |
| 8 | March 28, 2025 09:15 | March 28, 2025 09:30 | 15m | 106 | 27 |
| 9 | December 25, 2025 17:00 | December 25, 2025 19:30 | 2h 30m | 102 | 189 |
| 10 | June 12, 2025 05:15 | June 12, 2025 06:45 | 1h 30m | 71 | 100 |
Outage episodes by size in 2025: 9 reached 100+ customers, 2 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 Chickasaw 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 |
| Heartland Power Coop | 2024 | 65 min | 0.73 | 61 min | 0.71 |
| MiEnergy Cooperative | 2024 | 85 min | 0.70 | 64 min | 0.60 |
| Allamakee-Clayton El Coop, Inc | 2018 | 1.5 hrs | 0.73 | 1.5 hrs | 0.73 |
| Butler County Rural Elec Coop - (IA) | 2024 | 86 min | 0.75 | 66 min | 0.64 |
| Interstate Power and Light Co | - | - | - | - | - |
| City of Alta Vista- (IA) | - | - | - | - | - |
| City of Fredericksburg - (IA) | - | - | - | - | - |
| City of Lawler - (IA) | - | - | - | - | - |
| City of New Hampton - (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 ÷ 6,991 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. Chickasaw County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Chickasaw 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/chickasaw-county