Power outage history
Oconto County Wisconsin
8.8hours
without power for the average customer in a typical year, 2018–2025
11th most of 72 in Wisconsin 1.3× 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 Oconto's customers who were without power at that day's worst moment.
Year by year
Hours in the dark, per customer
2025 was the worst well-recorded year, at 16 hours for the average customer. Hatched years have a thin record and are left out of the averages.
Oconto, 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 |
|---|---|---|---|---|---|---|
| Apr 2, 2024 | Winter storm | 9,706 | 36% | 3.9 d | 2.7 d | 358k |
| Mar 29, 2025 | Ice storm | 8,472 | 32% | 4.6 d | 3.3 d | 351k |
| Jun 11, 2017 | Thunderstorms | 5,788 | 22% | 2.5 d | 2.0 d | 152k |
| Jun 15, 2022 | Thunderstorms | 5,626 | 21% | 47 h | 43 h | 122k |
| Jul 23, 2019 | No storm report | 2,396 | 9% | 3.3 d | 2.4 d | 106k |
| Jul 27, 2021 | Thunderstorms | 5,770 | 22% | 2.2 d | 43 h | 90k |
| Jul 19, 2019 | Thunderstorms | 5,268 | 20% | 34 h | 30 h | 85k |
| May 18, 2020 | Flooding | 6,028 | 23% | 24 h | 22 h | 81k |
| Jun 10, 2016 | Thunderstorms | 7,396 | 28% | 24 h | 6.2 h | 54k |
| Dec 1, 2019 | Winter storm | 10,114 | 38% | 30 h | 4.8 h | 47k |
| Jul 21, 2019 | No storm report | 3,429 | 13% | 17 h | 4.2 h | 34k |
| Jul 29, 2021 | No storm report | 3,772 | 14% | 8.5 h | 7.8 h | 32k |
| Nov 27, 2019 | Flooding | 1,607 | 6% | 34 h | 29 h | 30k |
| Mar 22, 2022 | No storm report | 4,531 | 17% | 38 h | 1.5 h | 30k |
| Mar 7, 2017 | No storm report | 1,829 | 7% | 33 h | 29 h | 27k |
| May 16, 2025 | Thunderstorms | 1,484 | 6% | 23 h | 24 h | 26k |
| Dec 16, 2021 | No storm report | 865 | 3% | 38 h | – | 23k |
| Jun 15, 2020 | Flooding | 5,420 | 20% | 6.5 h | 30 min | 22k |
| Jul 27, 2021 | Thunderstorms | 5,663 | 21% | 4.0 h | 1.5 h | 21k |
| Aug 3, 2022 | No storm report | 5,535 | 21% | 8.5 h | 6.5 h | 17k |
| Oct 21, 2020 | No storm report | 5,545 | 21% | 13 h | 48 min | 16k |
| Apr 27, 2024 | No storm report | 4,188 | 16% | 6.0 h | 4.5 h | 13k |
| Sep 13, 2019 | Flooding | 3,472 | 13% | 4.8 h | 3.0 h | 13k |
| Jul 23, 2025 | Tornadoes | 2,208 | 8% | 7.8 h | 8.0 h | 10k |
| May 26, 2024 | No storm report | 5,520 | 21% | 2.0 h | 12 min | 10k |
| Aug 7, 2019 | Thunderstorms | 3,490 | 13% | 2.8 h | 2.0 h | 9.6k |
| Dec 24, 2015 | Windstorm | 2,520 | 9% | 6.0 h | 4.8 h | 9.4k |
| Jul 1, 2018 | Thunderstorms | 1,770 | 7% | 9.0 h | 6.8 h | 9.3k |
| Mar 13, 2019 | No storm report | 2,522 | 9% | 4.5 h | 3.2 h | 9.3k |
| Dec 4, 2017 | No storm report | 2,355 | 9% | 9.5 h | 5.8 h | 8.6k |
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 Oconto from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.
- Winter storm 24%
- No storm on record 24%
- Thunderstorms 21%
- Ice storm 20%
- Flooding 9.1%
- Tornadoes 0.8%
Who keeps the lights on
Utilities serving Oconto
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 |
| Oconto Electric Cooperative | WI | 1,885 | – | 3.13 | 13.6 | 94k |
| Oconto Falls Water & Light Comm | Municipal | – | – | – | 14.4 | 1.4k |
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.
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 26,761 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 →