Fond du Lac County Power Outage History
2014–2025 · Wisconsin
Top 20% most reliable nationally — infrequent, short outages. How grades are calculated
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Aug 28, 2018 | 56 hrs | 9,591 (11%) | Flash Flood |
| Apr 14, 2018 | 36 hrs | 8,963 (10%) | Winter Storm |
| Jul 29, 2021 | 38 hrs | 7,238 (8%) | Thunderstorm Wind |
| Jun 12, 2017 | 43 hrs | 6,085 (7%) | Thunderstorm Wind |
| Aug 15, 2022 | 3 hrs | 5,132 (6%) | Unnamed event |
Over the 12 years from 2014 to 2025, Fond du Lac County recorded 327 distinct power outage events, averaging 2.4 hours per event.
The single worst outage on record in Fond du Lac County started August 28, 2018 (Flash Flood), lasting 56 hours and leaving up to 9,591 customers without power (11% of the county) at its peak.
June has historically been the worst month for outages in Fond du Lac County, with 48 events recorded during that month across the dataset.
Based on this history, Fond du Lac County earns a Reliability Grade of A, placing it in the 90th percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Fond du Lac County's outage profile
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Similar counties in Wisconsin
Counties with the closest reliability grade and national percentile to Fond du Lac County.
| County | Grade | National percentile |
|---|---|---|
| Eau Claire County | A | 90th |
| Rock County | A | 89th |
| Juneau County | A | 89th |
| Sauk County | A | 90th |
| Burnett County | A | 89th |
FAQ
How often does power go out in Fond du Lac County?
Between 2014 and 2025, Fond du Lac County recorded 327 outage events, averaging 2.4 hours each.
What is Fond du Lac County's reliability grade?
Fond du Lac County has a Reliability Grade of A, in the 90th national percentile.
What was the worst power outage in Fond du Lac County?
The worst outage on record started August 28, 2018 (Flash Flood), lasting 56 hours and affecting up to 9,591 customers.