County annual report · FIPS 19081
2023 Hancock County, IA Power Outage Report
In 2023, customers in Hancock County, IA went without power for an average of 3.2 hours, a total of 17K customer-hours (Iowa average 2.0 hours). That ranks 22nd worst of 99 Iowa counties and 1906th of 2,977 nationally.
Compared with IA, the US and 2022
Coverage line is EAGLE-I's share of Iowa customers tracked each year.
Biggest outages in Hancock County, 2023
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 18, 2023 22:30 | April 19, 2023 14:00 | 15h 30m | 3,371 | 5,205 |
| 2 | August 16, 2023 14:15 | August 16, 2023 20:00 | 5h 45m | 3,351 | 5,415 |
| 3 | September 23, 2023 19:45 | September 24, 2023 16:45 | 21h | 517 | 1,299 |
| 4 | September 14, 2023 07:45 | September 14, 2023 09:15 | 1h 30m | 267 | 401 |
| 5 | June 21, 2023 15:15 | June 21, 2023 17:00 | 1h 45m | 155 | 40 |
| 6 | March 17, 2023 02:30 | March 17, 2023 04:30 | 2h | 110 | 220 |
| 7 | October 2, 2023 02:15 | October 2, 2023 07:00 | 4h 45m | 109 | 518 |
| 8 | August 12, 2023 02:30 | August 12, 2023 10:30 | 8h | 101 | 327 |
| 9 | January 16, 2023 22:30 | January 16, 2023 23:30 | 1h | 93 | 35 |
| 10 | July 20, 2023 17:45 | July 20, 2023 18:30 | 45m | 76 | 57 |
Outage episodes by size in 2023: 8 reached 100+ customers, 2 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 2023, 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 | 2023 | 68 min | 0.90 | 68 min | 0.90 |
| 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 2023; 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, 2023, 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/2023/iowa/hancock-county