County annual report · FIPS 19025
2025 Calhoun County, IA Power Outage Report
In 2025, customers in Calhoun County, IA went without power for an average of 13.2 hours, a total of 54K customer-hours (Iowa average 2.9 hours). That ranks 5th worst of 99 Iowa counties and 587th 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 Calhoun 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 11:30 | March 20, 2025 20:30 | 1d 9h | 2,838 | 25K |
| 2 | June 15, 2025 14:30 | June 15, 2025 20:00 | 5h 30m | 1,702 | 4,941 |
| 3 | March 27, 2025 22:15 | March 28, 2025 03:45 | 5h 30m | 1,586 | 6,142 |
| 4 | March 5, 2025 01:00 | March 6, 2025 11:45 | 1d 10h | 1,580 | 12K |
| 5 | March 28, 2025 10:15 | March 28, 2025 11:15 | 1h | 1,483 | 1,398 |
| 6 | May 15, 2025 19:00 | May 15, 2025 20:30 | 1h 30m | 1,259 | 1,286 |
| 7 | June 15, 2025 00:30 | June 15, 2025 00:45 | 15m | 1,254 | 314 |
| 8 | March 27, 2025 16:45 | March 27, 2025 17:00 | 15m | 522 | 131 |
| 9 | August 2, 2025 14:45 | August 2, 2025 15:45 | 1h | 281 | 211 |
| 10 | December 17, 2025 02:45 | December 17, 2025 06:45 | 4h | 254 | 922 |
Outage episodes by size in 2025: 11 reached 100+ customers, 7 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 Calhoun 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 |
| Midland Power Coop | - | - | - | - | - |
| Raccoon Valley Electric Cooperative | - | - | - | - | - |
| Calhoun County Elec Coop Assn | - | - | - | - | - |
| City of Farnhamville - (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 ÷ 4,092 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. Calhoun County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Calhoun 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/calhoun-county