Ozaukee County Power Outage History
2014–2025 · Wisconsin
Average — typical outage frequency and duration nationally. How grades are calculated
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Jan 12, 2024 | 46 hrs | 10,592 (28%) | Winter Storm |
| Mar 10, 2023 | 24 hrs | 9,699 (26%) | Winter Storm |
| Nov 5, 2022 | 39 hrs | 8,398 (22%) | Thunderstorm Wind |
| Jun 16, 2022 | 32 hrs | 7,224 (19%) | Excessive Heat |
| Nov 30, 2025 | 12 hrs | 6,942 (19%) | Winter Weather |
Over the 12 years from 2014 to 2025, Ozaukee County recorded 423 distinct power outage events, averaging 3.0 hours per event.
The single worst outage on record in Ozaukee County started January 12, 2024 (Winter Storm), lasting 46 hours and leaving up to 10,592 customers without power (28% of the county) at its peak.
August has historically been the worst month for outages in Ozaukee County, with 66 events recorded during that month across the dataset.
Based on this history, Ozaukee County earns a Reliability Grade of C, placing it in the 50th percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Ozaukee County's outage profile
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Similar counties in Wisconsin
Counties with the closest reliability grade and national percentile to Ozaukee County.
| County | Grade | National percentile |
|---|---|---|
| Walworth County | C | 49th |
| Marquette County | C | 46th |
| Jefferson County | C | 46th |
| Washington County | C | 55th |
| Sawyer County | C | 44th |
FAQ
How often does power go out in Ozaukee County?
Between 2014 and 2025, Ozaukee County recorded 423 outage events, averaging 3.0 hours each.
What is Ozaukee County's reliability grade?
Ozaukee County has a Reliability Grade of C, in the 50th national percentile.
What was the worst power outage in Ozaukee County?
The worst outage on record started January 12, 2024 (Winter Storm), lasting 46 hours and affecting up to 10,592 customers.