County annual report · FIPS 19037
2021 Chickasaw County, IA Power Outage Report
In 2021, customers in Chickasaw County, IA went without power for an average of 4.7 hours, a total of 33K customer-hours (Iowa average 2.7 hours). That ranks 33rd worst of 99 Iowa counties and 1392nd of 2,974 nationally.
Compared with IA, the US and 2020
Coverage line is EAGLE-I's share of Iowa customers tracked each year.
Biggest outages in Chickasaw County, 2021
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | December 16, 2021 01:15 | December 18, 2021 22:15 | 2d 21h | 1,141 | 20K |
| 2 | January 31, 2021 06:45 | January 31, 2021 17:15 | 10h 30m | 385 | 4,043 |
| 3 | February 15, 2021 18:30 | February 15, 2021 21:15 | 2h 45m | 300 | 433 |
| 4 | December 11, 2021 09:15 | December 11, 2021 20:00 | 10h 45m | 288 | 1,934 |
| 5 | May 26, 2021 14:15 | May 26, 2021 16:45 | 2h 30m | 167 | 66 |
| 6 | May 29, 2021 10:15 | June 1, 2021 11:30 | 3d 1h | 132 | 2,358 |
| 7 | January 7, 2021 10:30 | January 7, 2021 10:45 | 15m | 112 | 28 |
| 8 | August 23, 2021 08:30 | August 23, 2021 11:30 | 3h | 105 | 64 |
| 9 | August 9, 2021 02:30 | August 9, 2021 07:15 | 4h 45m | 69 | 200 |
| 10 | February 16, 2021 13:15 | February 16, 2021 15:15 | 2h | 67 | 60 |
Outage episodes by size in 2021: 8 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 Chickasaw County reported on EIA Form 861 for 2021, 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 | 2021 | 1.9 hrs | 1.04 | 75 min | 0.74 |
| Heartland Power Coop | 2021 | 3.2 hrs | 0.80 | 35 min | 0.39 |
| MiEnergy Cooperative | 2021 | 2.5 hrs | 1.30 | 83 min | 0.85 |
| Allamakee-Clayton El Coop, Inc | 2018 | 1.5 hrs | 0.73 | 1.5 hrs | 0.73 |
| Interstate Power and Light Co | - | - | - | - | - |
| Butler County Rural Elec Coop - (IA) | - | - | - | - | - |
| 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 91% of Iowa's customers in 2021; 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, 2021, 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/2021/iowa/chickasaw-county