County annual report · FIPS 19081
2021 Hancock County, IA Power Outage Report
In 2021, customers in Hancock County, IA went without power for an average of 3.0 hours, a total of 17K customer-hours (Iowa average 2.7 hours). That ranks 46th worst of 99 Iowa counties and 1827th 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 Hancock 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 | May 8, 2021 22:15 | May 8, 2021 23:45 | 1h 30m | 994 | 1,406 |
| 2 | February 16, 2021 13:15 | February 16, 2021 16:00 | 2h 45m | 949 | 1,055 |
| 3 | December 15, 2021 23:00 | December 18, 2021 17:45 | 2d 18h | 923 | 7,646 |
| 4 | August 27, 2021 22:00 | August 28, 2021 05:30 | 7h 30m | 759 | 759 |
| 5 | August 24, 2021 17:45 | August 24, 2021 19:45 | 2h | 739 | 406 |
| 6 | January 25, 2021 21:30 | January 25, 2021 23:45 | 2h 15m | 355 | 249 |
| 7 | April 21, 2021 13:00 | April 21, 2021 14:00 | 1h | 274 | 206 |
| 8 | May 19, 2021 21:45 | May 20, 2021 01:15 | 3h 30m | 167 | 220 |
| 9 | September 30, 2021 07:45 | September 30, 2021 09:45 | 2h | 161 | 322 |
| 10 | January 13, 2021 15:15 | January 13, 2021 18:00 | 2h 45m | 156 | 140 |
Outage episodes by size in 2021: 13 reached 100+ customers, 0 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 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 |
|---|---|---|---|---|---|
| Heartland Power Coop | 2021 | 3.2 hrs | 0.80 | 35 min | 0.39 |
| 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 91% of Iowa's customers in 2021; 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, 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/hancock-county