County annual report · FIPS 55139
2018 Winnebago County, WI Power Outage Report
In 2018, customers in Winnebago County, WI went without power for an average of 1.1 hours, a total of 83K customer-hours (Wisconsin average 1.7 hours). That ranks 50th worst of 71 Wisconsin counties and 2269th of 2,798 nationally.
Compared with WI, the US and 2017
Coverage line is EAGLE-I's share of Wisconsin customers tracked each year.
Biggest outages in Winnebago County, 2018
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 16, 2018 16:00 | May 16, 2018 19:15 | 3h 15m | 12,757 | 5,566 |
| 2 | November 7, 2018 15:00 | November 7, 2018 16:30 | 1h 30m | 7,580 | 5,686 |
| 3 | January 28, 2018 07:15 | January 28, 2018 07:30 | 15m | 7,409 | 1,852 |
| 4 | March 26, 2018 07:15 | March 26, 2018 13:00 | 5h 45m | 5,492 | 10K |
| 5 | July 6, 2018 22:15 | July 7, 2018 01:15 | 3h | 5,460 | 4,096 |
| 6 | January 11, 2018 06:00 | January 11, 2018 08:30 | 2h 30m | 4,182 | 6,274 |
| 7 | November 16, 2018 17:00 | November 16, 2018 17:15 | 15m | 3,047 | 762 |
| 8 | April 14, 2018 04:45 | April 15, 2018 20:00 | 1d 15h | 2,972 | 6,116 |
| 9 | June 28, 2018 23:15 | June 29, 2018 05:15 | 6h | 2,893 | 5,163 |
| 10 | July 20, 2018 08:15 | July 20, 2018 16:30 | 8h 15m | 2,225 | 5,548 |
Outage episodes by size in 2018: 40 reached 100+ customers, 16 reached 1,000+ customers, 1 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 2018, 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 |
|---|---|---|---|---|---|
| Wisconsin Electric Power Co | 2018 | 2.0 hrs | 0.73 | 70 min | 0.59 |
| Wisconsin Public Service Corp | 2018 | 2.0 hrs | 0.97 | 1.8 hrs | 0.94 |
| Alliant Energy (Interstate Power & Light) | - | - | - | - | - |
| Wisconsin Power & Light Co | - | - | - | - | - |
| City of Menasha - (WI) | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 83% of Wisconsin's customers in 2018; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 74,573 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, WI annual power outage report, 2018, 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/2018/wisconsin/winnebago-county