County annual report · FIPS 19043
2021 Clayton County, IA Power Outage Report
In 2021, customers in Clayton County, IA went without power for an average of 1.1 hours, a total of 11K customer-hours (Iowa average 2.7 hours). That ranks 84th worst of 99 Iowa counties and 2629th 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 Clayton 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 14:15 | February 26, 2021 16:45 | 2h 30m | 1,410 | 3,525 |
| 2 | December 11, 2021 10:15 | December 11, 2021 14:30 | 4h 15m | 632 | 1,826 |
| 3 | July 19, 2021 21:00 | July 20, 2021 00:15 | 3h 15m | 417 | 993 |
| 4 | December 16, 2021 00:30 | December 16, 2021 16:15 | 15h 45m | 211 | 1,314 |
| 5 | June 21, 2021 06:15 | June 21, 2021 07:30 | 1h 15m | 208 | 106 |
| 6 | September 29, 2021 07:30 | September 29, 2021 14:45 | 7h 15m | 82 | 408 |
| 7 | March 24, 2021 05:15 | March 24, 2021 19:30 | 14h 15m | 79 | 369 |
| 8 | August 24, 2021 20:30 | August 25, 2021 04:30 | 8h | 70 | 272 |
| 9 | April 27, 2021 21:45 | April 27, 2021 23:45 | 2h | 69 | 83 |
| 10 | January 15, 2021 05:45 | January 15, 2021 08:30 | 2h 45m | 58 | 95 |
Outage episodes by size in 2021: 5 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 Clayton 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 |
|---|---|---|---|---|---|
| East-Central Iowa Rural Elec Coop | 2021 | 1.7 hrs | 1.30 | 88 min | 1.10 |
| Maquoketa Valley Rrl Elec Coop | 2021 | 88 min | 0.93 | 56 min | 0.71 |
| Allamakee-Clayton El Coop, Inc | 2018 | 1.5 hrs | 0.73 | 1.5 hrs | 0.73 |
| Interstate Power and Light Co | - | - | - | - | - |
| Alliant Energy (Interstate Power & Light) | - | - | - | - | - |
| City of Guttenberg | - | - | - | - | - |
| City of McGregor- (IA) | - | - | - | - | - |
| City of Strawberry Point | - | - | - | - | - |
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 ÷ 10,421 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. Clayton County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Clayton 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/clayton-county