Iowa County Power Outage History
2014–2025 · Wisconsin
Better than average — fewer or shorter outages than most counties. How grades are calculated
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Jun 26, 2020 | 3 hrs | 5,293 (54%) | Unnamed event |
| Dec 15, 2014 | 0 hrs | 5,028 (51%) | Unnamed event |
| Nov 20, 2014 | 2 hrs | 5,025 (51%) | Unnamed event |
| Dec 16, 2021 | 30 hrs | 3,809 (39%) | High Wind |
| Jun 28, 2017 | 2 hrs | 3,211 (33%) | Thunderstorm Wind |
Over the 12 years from 2014 to 2025, Iowa County recorded 350 distinct power outage events, averaging 1.9 hours per event.
The single worst outage on record in Iowa County started June 26, 2020, lasting 3 hours and leaving up to 5,293 customers without power (54% of the county) at its peak.
June has historically been the worst month for outages in Iowa County, with 67 events recorded during that month across the dataset.
Based on this history, Iowa County earns a Reliability Grade of B, placing it in the 71st percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Iowa County's outage profile
See more picks in our Best Small Power Stations (Under 1,000Wh) roundup.
Outage-prep kit
See our outage-prep guides.
Similar counties in Wisconsin
Counties with the closest reliability grade and national percentile to Iowa County.
| County | Grade | National percentile |
|---|---|---|
| Sheboygan County | B | 72nd |
| Polk County | B | 71st |
| Green Lake County | B | 73rd |
| Kenosha County | B | 70th |
| St. Croix County | B | 73rd |
FAQ
How often does power go out in Iowa County?
Between 2014 and 2025, Iowa County recorded 350 outage events, averaging 1.9 hours each.
What is Iowa County's reliability grade?
Iowa County has a Reliability Grade of B, in the 71st national percentile.
What was the worst power outage in Iowa County?
The worst outage on record started June 26, 2020, lasting 3 hours and affecting up to 5,293 customers.