County annual report · FIPS 19027
2021 Carroll County, IA Power Outage Report
In 2021, customers in Carroll County, IA went without power for an average of 1.9 hours, a total of 16K customer-hours (Iowa average 2.7 hours). That ranks 62nd worst of 99 Iowa counties and 2265th 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 Carroll 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 | August 14, 2021 12:30 | August 14, 2021 15:15 | 2h 45m | 1,495 | 2,440 |
| 2 | December 15, 2021 23:00 | December 17, 2021 04:15 | 1d 5h | 781 | 4,706 |
| 3 | June 17, 2021 03:15 | June 17, 2021 21:45 | 18h 30m | 707 | 2,779 |
| 4 | December 10, 2021 20:45 | December 11, 2021 04:45 | 8h | 540 | 1,254 |
| 5 | May 8, 2021 20:15 | May 8, 2021 20:30 | 15m | 491 | 123 |
| 6 | January 28, 2021 18:00 | January 28, 2021 18:30 | 30m | 486 | 122 |
| 7 | March 18, 2021 01:45 | March 18, 2021 02:45 | 1h | 326 | 326 |
| 8 | May 8, 2021 23:30 | May 9, 2021 02:15 | 2h 45m | 285 | 148 |
| 9 | October 14, 2021 00:30 | October 14, 2021 03:00 | 2h 30m | 162 | 123 |
| 10 | July 14, 2021 21:00 | July 15, 2021 12:00 | 15h | 139 | 1,810 |
Outage episodes by size in 2021: 10 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 Carroll 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 |
| Western Iowa Power Coop | 2018 | 47 min | 0.76 | 47 min | 0.76 |
| Interstate Power and Light Co | - | - | - | - | - |
| Alliant Energy (Interstate Power & Light) | - | - | - | - | - |
| Raccoon Valley Electric Cooperative | - | - | - | - | - |
| City of Coon Rapids | - | - | - | - | - |
| City of Breda - (IA) | - | - | - | - | - |
| City of Glidden - (IA) | - | - | - | - | - |
| City of Manning | - | - | - | - | - |
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 ÷ 8,666 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. Carroll County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Carroll 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/carroll-county