County annual report · FIPS 19189
2015 Winnebago County, IA Power Outage Report
In 2015, customers in Winnebago County, IA went without power for an average of 0.4 hours, a total of 2,870 customer-hours (Iowa average 1.1 hours). That ranks 81st worst of 99 Iowa counties and 2126th of 2,484 nationally.
Compared with IA, the US
Coverage line is EAGLE-I's share of Iowa customers tracked each year.
Biggest outages in Winnebago County, 2015
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | September 2, 2015 15:15 | September 2, 2015 17:30 | 2h 15m | 351 | 790 |
| 2 | January 6, 2015 12:30 | January 6, 2015 14:15 | 1h 45m | 276 | 483 |
| 3 | November 15, 2015 20:00 | November 15, 2015 22:00 | 2h | 234 | 184 |
| 4 | April 18, 2015 08:30 | April 18, 2015 11:15 | 2h 45m | 208 | 572 |
| 5 | November 11, 2015 23:00 | November 12, 2015 01:30 | 2h 30m | 157 | 368 |
| 6 | October 23, 2015 20:00 | October 23, 2015 20:15 | 15m | 126 | 32 |
| 7 | November 18, 2015 20:00 | November 18, 2015 21:00 | 1h | 92 | 69 |
| 8 | December 21, 2015 15:45 | December 21, 2015 16:45 | 1h | 76 | 22 |
| 9 | December 21, 2015 17:30 | December 21, 2015 17:45 | 15m | 76 | 19 |
| 10 | April 2, 2015 19:15 | April 2, 2015 21:15 | 2h | 32 | 64 |
Outage episodes by size in 2015: 6 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 2015, 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 | 2015 | 49 min | 0.71 | 49 min | 0.71 |
| 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 2015; 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, 2015, 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/2015/iowa/winnebago-county