County annual report · FIPS 19189
2023 Winnebago County, IA Power Outage Report
In 2023, customers in Winnebago County, IA went without power for an average of 1.0 hours, a total of 7,086 customer-hours (Iowa average 2.0 hours). That ranks 77th worst of 99 Iowa counties and 2684th 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 Winnebago 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 | October 13, 2023 03:15 | October 13, 2023 05:15 | 2h | 330 | 168 |
| 2 | March 31, 2023 13:15 | March 31, 2023 20:00 | 6h 45m | 280 | 1,028 |
| 3 | October 20, 2023 22:30 | October 21, 2023 14:30 | 16h | 155 | 2,480 |
| 4 | April 6, 2023 02:45 | April 6, 2023 04:15 | 1h 30m | 147 | 118 |
| 5 | September 2, 2023 23:00 | September 5, 2023 21:45 | 2d 22h | 118 | 280 |
| 6 | August 17, 2023 20:00 | August 17, 2023 20:45 | 45m | 98 | 74 |
| 7 | September 30, 2023 16:15 | September 30, 2023 18:45 | 2h 30m | 88 | 210 |
| 8 | July 11, 2023 16:00 | July 11, 2023 19:45 | 3h 45m | 74 | 193 |
| 9 | November 16, 2023 18:45 | November 16, 2023 21:15 | 2h 30m | 71 | 178 |
| 10 | January 23, 2023 02:00 | January 23, 2023 03:00 | 1h | 60 | 17 |
Outage episodes by size in 2023: 5 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 Winnebago 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 | - | - | - | - | - |
| City of Forest City- (IA) | - | - | - | - | - |
| City of Lake Mills | - | - | - | - | - |
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 ÷ 7,213 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. Winnebago County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Winnebago 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/winnebago-county