County annual report · FIPS 19025
2018 Calhoun County, IA Power Outage Report
In 2018, customers in Calhoun County, IA went without power for an average of 7.9 hours, a total of 33K customer-hours (Iowa average 2.2 hours). That ranks 6th worst of 99 Iowa counties and 694th of 2,798 nationally.
Compared with IA, the US and 2017
Coverage line is EAGLE-I's share of Iowa customers tracked each year.
Biggest outages in Calhoun County, 2018
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | April 14, 2018 22:45 | April 16, 2018 07:15 | 1d 8h | 2,152 | 24K |
| 2 | May 27, 2018 22:30 | May 28, 2018 05:30 | 7h | 1,116 | 418 |
| 3 | June 17, 2018 23:30 | June 18, 2018 01:00 | 1h 30m | 1,116 | 1,384 |
| 4 | December 20, 2018 13:30 | December 20, 2018 15:00 | 1h 30m | 1,115 | 1,657 |
| 5 | August 27, 2018 02:45 | August 27, 2018 03:15 | 30m | 1,099 | 549 |
| 6 | April 14, 2018 21:00 | April 14, 2018 21:30 | 30m | 1,060 | 530 |
| 7 | June 29, 2018 23:15 | June 30, 2018 02:30 | 3h 15m | 608 | 1,110 |
| 8 | September 20, 2018 23:30 | September 21, 2018 02:30 | 3h | 443 | 754 |
| 9 | July 11, 2018 14:00 | July 11, 2018 17:15 | 3h 15m | 351 | 355 |
| 10 | April 9, 2018 16:45 | April 9, 2018 17:15 | 30m | 81 | 21 |
Outage episodes by size in 2018: 9 reached 100+ customers, 6 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 2018, 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 | 2018 | 1.9 hrs | 1.18 | 75 min | 0.96 |
| 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 89% of Iowa's customers in 2018; 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, 2018, 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/2018/iowa/calhoun-county