County annual report · FIPS 19133
2021 Monona County, IA Power Outage Report
In 2021, customers in Monona County, IA went without power for an average of 1.4 hours, a total of 11K customer-hours (Iowa average 2.7 hours). That ranks 81st worst of 99 Iowa counties and 2494th 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 Monona 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 10, 2021 20:45 | December 11, 2021 14:00 | 17h 15m | 940 | 4,966 |
| 2 | December 15, 2021 22:30 | December 16, 2021 05:00 | 6h 30m | 899 | 766 |
| 3 | August 22, 2021 06:00 | August 22, 2021 06:15 | 15m | 629 | 157 |
| 4 | June 24, 2021 08:00 | June 24, 2021 17:00 | 9h | 475 | 1,704 |
| 5 | December 20, 2021 10:00 | December 20, 2021 11:45 | 1h 45m | 402 | 704 |
| 6 | August 22, 2021 01:15 | August 22, 2021 05:15 | 4h | 362 | 987 |
| 7 | June 24, 2021 18:00 | June 24, 2021 19:45 | 1h 45m | 159 | 239 |
| 8 | September 28, 2021 14:00 | September 28, 2021 14:45 | 45m | 129 | 97 |
| 9 | August 22, 2021 09:15 | August 22, 2021 09:30 | 15m | 101 | 25 |
| 10 | December 13, 2021 20:15 | December 13, 2021 21:45 | 1h 30m | 90 | 69 |
Outage episodes by size in 2021: 9 reached 100+ customers, 0 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 Monona 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 |
| WAPA-- Western Area Power Administration | - | - | - | - | - |
| Harrison County Rrl Elec Coop | - | - | - | - | - |
| Woodbury County Rural E C A | - | - | - | - | - |
| City of Mapleton- (IA) | - | - | - | - | - |
| City of Onawa - (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 ÷ 7,388 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. Monona County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Monona 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/monona-county