County annual report · FIPS 19081
2025 Hancock County, IA Power Outage Report
In 2025, customers in Hancock County, IA went without power for an average of 16.8 hours, a total of 92K customer-hours (Iowa average 2.9 hours). That ranks 3rd worst of 99 Iowa counties and 439th 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 Hancock 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 | July 29, 2025 05:15 | July 30, 2025 23:30 | 1d 18h | 5,271 | 31K |
| 2 | March 5, 2025 02:15 | March 6, 2025 21:30 | 1d 19h | 4,226 | 44K |
| 3 | May 19, 2025 16:15 | May 19, 2025 21:45 | 5h 30m | 1,817 | 1,704 |
| 4 | March 15, 2025 16:00 | March 15, 2025 20:15 | 4h 15m | 1,795 | 3,142 |
| 5 | December 27, 2025 10:45 | December 27, 2025 12:30 | 1h 45m | 678 | 1,186 |
| 6 | August 6, 2025 12:30 | August 6, 2025 20:00 | 7h 30m | 361 | 724 |
| 7 | August 3, 2025 01:00 | August 3, 2025 02:00 | 1h | 360 | 360 |
| 8 | April 22, 2025 15:30 | April 22, 2025 15:45 | 15m | 278 | 70 |
| 9 | June 11, 2025 23:00 | June 12, 2025 13:00 | 14h | 274 | 1,005 |
| 10 | July 5, 2025 12:30 | July 6, 2025 18:00 | 1d 5h | 207 | 2,728 |
Outage episodes by size in 2025: 13 reached 100+ customers, 4 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 Hancock 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 |
|---|---|---|---|---|---|
| Heartland Power Coop | 2024 | 65 min | 0.73 | 61 min | 0.71 |
| Interstate Power and Light Co | - | - | - | - | - |
| Prairie Energy Coop | - | - | - | - | - |
| Boone Valley Electric Coop | - | - | - | - | - |
| City of Forest City- (IA) | - | - | - | - | - |
| City of Corwith - (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 ÷ 5,489 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. Hancock County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Hancock 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/hancock-county