Power outage history
Winnebago County Wisconsin
2.3hours
without power for the average customer in a typical year, 2018–2025
45th most of 72 in Wisconsin 65% below the national median
Every day since 2015
Eleven years, one night at a time
Each cell is a day. The brighter it is, the larger the share of Winnebago's customers who were without power at that day's worst moment.
Year by year
Hours in the dark, per customer
2022 was the worst well-recorded year, at 6.2 hours for the average customer. Hatched years have a thin record and are left out of the averages.
Winnebago, hours without power per customer
The record
The biggest outages since 2015
Ranked by customer-hours lost: customers out multiplied by how long they stayed out. Times are local.
| Began | Storm | Peak out | Share | Lasted | 90% restored | Customer-hours |
|---|---|---|---|---|---|---|
| Jul 23, 2022 | Thunderstorms | 20,041 | 27% | 24 h | 12 h | 235k |
| Jun 15, 2022 | Thunderstorms | 6,168 | 8% | 2.9 d | 2.8 d | 153k |
| Jul 20, 2019 | Thunderstorms | 6,013 | 8% | 34 h | 37 h | 116k |
| Apr 2, 2024 | Winter storm | 6,657 | 9% | 37 h | 34 h | 84k |
| Jul 29, 2021 | Thunderstorms | 4,582 | 6% | 25 h | 33 h | 52k |
| Jun 14, 2020 | No storm report | 5,448 | 7% | 7.2 h | 8.8 h | 39k |
| Jun 14, 2017 | Thunderstorms | 10,230 | 14% | 15 h | 6.2 h | 38k |
| Aug 26, 2024 | No storm report | 4,766 | 6% | 9.8 h | 4.2 h | 37k |
| May 21, 2024 | No storm report | 4,978 | 7% | 4.8 h | 2.8 h | 17k |
| Aug 3, 2023 | Thunderstorms | 3,502 | 5% | 6.5 h | – | 17k |
| Jun 2, 2020 | Thunderstorms | 5,417 | 7% | 9.8 h | 7.0 h | 17k |
| Jul 18, 2015 | Thunderstorms | 4,622 | 6% | 5.2 h | 5.5 h | 13k |
| May 26, 2020 | No storm report | 7,682 | 10% | 2.5 h | 1.8 h | 13k |
| Aug 3, 2022 | No storm report | 2,242 | 3% | 6.0 h | – | 12k |
| Aug 11, 2023 | No storm report | 3,842 | 5% | 4.8 h | 4.0 h | 10k |
| Jun 27, 2019 | Thunderstorms | 5,796 | 8% | 4.5 h | 2.2 h | 9.6k |
| Mar 26, 2018 | No storm report | 5,492 | 7% | 5.8 h | 7.5 h | 9.5k |
| Aug 18, 2021 | No storm report | 4,534 | 6% | 3.0 h | 1.5 h | 9.2k |
| Jul 13, 2015 | Thunderstorms | 2,826 | 4% | 5.2 h | – | 8.6k |
| May 16, 2025 | Thunderstorms | 2,582 | 3% | 3.5 h | – | 8.6k |
| Oct 18, 2015 | No storm report | 4,651 | 6% | 3.2 h | 2.5 h | 8.4k |
| Jun 23, 2025 | Thunderstorms | 3,533 | 5% | 2.8 h | – | 8.3k |
| Aug 18, 2019 | No storm report | 2,704 | 4% | 3.8 h | – | 7.4k |
| Sep 15, 2015 | No storm report | 2,451 | 3% | 3.0 h | – | 7.4k |
| Nov 5, 2022 | Windstorm | 3,595 | 5% | 2.0 h | – | 6.9k |
| Nov 11, 2023 | No storm report | 5,856 | 8% | 1.8 h | 5.0 h | 6.8k |
| Jan 11, 2018 | No storm report | 4,182 | 6% | 1.5 h | 48 min | 6.3k |
| Dec 11, 2021 | No storm report | 2,425 | 3% | 2.5 h | – | 6.0k |
| Nov 7, 2018 | No storm report | 7,580 | 10% | 48 min | 48 min | 5.7k |
| May 16, 2018 | No storm report | 12,757 | 17% | 30 min | 30 min | 5.5k |
After the peak
How fast the lights come back
Each line is one major outage, from its peak. The amber line is the typical path.
When it happens
The outage clock
Customer-hours out by month (rings, January innermost) and local hour, 2018–2025.
What was happening
Weather behind the outages
Each outage is matched to NOAA storm reports for Winnebago from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.
- Thunderstorms 58%
- No storm on record 32%
- Winter storm 8.3%
- Windstorm 1.2%
Who keeps the lights on
Utilities serving Winnebago
As each utility reports to the Energy Information Administration for its whole Wisconsin territory, not this county alone. Outage minutes include major storm days.
| Utility | Type | Outage min / yr | Excl. major storms | Outages / yr | Residential ¢/kWh | Customers |
|---|---|---|---|---|---|---|
| Wisconsin Electric Power Co | Investor Owned | 185 | 93 | 0.90 | 20.5 | 1.1M |
| Wisconsin Power & Light Co | Investor Owned | 96 | 75 | 0.79 | 18.5 | 441k |
| Wisconsin Public Service Corp | Investor Owned | 630 | 107 | 1.44 | 17.2 | 416k |
| City of Menasha | Municipal | 22 | 22 | 0.07 | 13.2 | 8.7k |
EIA Form 861, latest year each utility reported. Outage minutes are SAIDI, the yearly minutes the average customer goes without power; outages a year are SAIFI.
Next door
Neighbouring counties
- Outagamie 10.0 h
- Waupaca 6.5 h
- Waushara 3.3 h
- Calumet 3.1 h
- Green Lake 2.8 h
- Winnebago (this county) 2.3 h
- Fond du Lac 1.3 h
About these numbers
Notes
Outages come from the EAGLE-I record of utility outage maps collected every 15 minutes by Oak Ridge National Laboratory. Hours without power are customer-hours divided by the county's 74,573 electricity customers. Averages use well-covered years from 2018. Outages shorter than 15 minutes, and utilities that publish no outage map, are not in the record, so these figures understate the total. How every number is made →