County annual report · FIPS 19133
2025 Monona County, IA Power Outage Report
In 2025, customers in Monona County, IA went without power for an average of 12.1 hours, a total of 89K customer-hours (Iowa average 2.9 hours). That ranks 7th worst of 99 Iowa counties and 649th of 3,000 nationally.
Compared with IA, the US and 2024
Coverage line is EAGLE-I's share of Iowa customers tracked each year.
Biggest outages in Monona County, 2025
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | March 19, 2025 10:45 | March 20, 2025 20:30 | 1d 9h | 2,429 | 50K |
| 2 | April 6, 2025 13:00 | April 6, 2025 14:15 | 1h 15m | 1,215 | 704 |
| 3 | March 20, 2025 23:30 | March 24, 2025 17:45 | 3d 18h | 1,031 | 27K |
| 4 | September 23, 2025 15:15 | September 23, 2025 17:45 | 2h 30m | 992 | 1,545 |
| 5 | May 20, 2025 01:00 | May 20, 2025 04:30 | 3h 30m | 506 | 394 |
| 6 | June 18, 2025 16:00 | June 18, 2025 17:15 | 1h 15m | 405 | 506 |
| 7 | June 11, 2025 19:45 | June 11, 2025 23:30 | 3h 45m | 384 | 1,421 |
| 8 | December 10, 2025 07:15 | December 10, 2025 11:30 | 4h 15m | 376 | 266 |
| 9 | June 4, 2025 16:30 | June 4, 2025 17:30 | 1h | 343 | 343 |
| 10 | August 9, 2025 12:00 | August 9, 2025 18:00 | 6h | 291 | 995 |
Outage episodes by size in 2025: 14 reached 100+ customers, 3 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 2025, 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 | 2024 | 5.5 hrs | 1.42 | 1.7 hrs | 0.94 |
| 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 n/a of Iowa's customers in 2025; 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, 2025, 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/2025/iowa/monona-county