County annual report · FIPS 19035
2021 Cherokee County, IA Power Outage Report
In 2021, customers in Cherokee County, IA went without power for an average of 2.9 hours, a total of 17K customer-hours (Iowa average 2.7 hours). That ranks 48th worst of 99 Iowa counties and 1878th 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 Cherokee 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 | February 26, 2021 18:45 | February 27, 2021 01:15 | 6h 30m | 1,772 | 1,687 |
| 2 | June 19, 2021 03:15 | June 21, 2021 15:30 | 2d 12h | 1,152 | 6,701 |
| 3 | August 27, 2021 07:15 | August 27, 2021 14:00 | 6h 45m | 878 | 2,020 |
| 4 | February 4, 2021 16:45 | February 4, 2021 18:00 | 1h 15m | 770 | 398 |
| 5 | December 15, 2021 23:00 | December 17, 2021 07:30 | 1d 8h | 384 | 2,786 |
| 6 | September 2, 2021 16:15 | September 2, 2021 17:00 | 45m | 116 | 87 |
| 7 | February 17, 2021 13:45 | February 17, 2021 14:30 | 45m | 115 | 86 |
| 8 | November 16, 2021 15:15 | November 16, 2021 19:30 | 4h 15m | 115 | 444 |
| 9 | May 23, 2021 02:15 | May 23, 2021 06:00 | 3h 45m | 59 | 168 |
| 10 | July 19, 2021 19:45 | July 19, 2021 20:00 | 15m | 58 | 15 |
Outage episodes by size in 2021: 8 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 Cherokee 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 |
| Iowa Lakes Electric Coop | 2021 | 75 min | 0.84 | 65 min | 0.80 |
| WAPA-- Western Area Power Administration | - | - | - | - | - |
| Interstate Power and Light Co | - | - | - | - | - |
| North West Rural Electric Coop | - | - | - | - | - |
| Woodbury County Rural E C A | - | - | - | - | - |
| City of Aurelia - (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 ÷ 5,968 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. Cherokee County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Cherokee 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/cherokee-county