County annual report · FIPS 19025
2021 Calhoun County, IA Power Outage Report
In 2021, customers in Calhoun County, IA went without power for an average of 15.2 hours, a total of 62K customer-hours (Iowa average 2.7 hours). That ranks 5th worst of 99 Iowa counties and 562nd 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 Calhoun 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 20:00 | December 11, 2021 20:30 | 1d | 2,353 | 10K |
| 2 | December 15, 2021 23:45 | December 18, 2021 16:30 | 2d 16h | 2,249 | 20K |
| 3 | July 14, 2021 21:00 | July 15, 2021 23:15 | 1d 2h | 1,320 | 18K |
| 4 | March 15, 2021 11:30 | March 15, 2021 13:45 | 2h 15m | 1,101 | 2,467 |
| 5 | January 26, 2021 19:00 | January 27, 2021 03:30 | 8h 30m | 1,079 | 6,207 |
| 6 | May 1, 2021 16:45 | May 1, 2021 20:00 | 3h 15m | 690 | 1,210 |
| 7 | June 17, 2021 11:15 | June 17, 2021 13:30 | 2h 15m | 636 | 796 |
| 8 | February 16, 2021 13:15 | February 16, 2021 22:15 | 9h | 589 | 909 |
| 9 | July 1, 2021 08:15 | July 1, 2021 08:30 | 15m | 528 | 132 |
| 10 | June 3, 2021 16:45 | June 3, 2021 17:00 | 15m | 424 | 106 |
Outage episodes by size in 2021: 11 reached 100+ customers, 5 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 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 |
| 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 91% of Iowa's customers in 2021; 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, 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/calhoun-county