Iron CountyPower Outage History
2014–2025 · Wisconsin
Worse than average — more frequent or longer outages than most counties.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Jun 6, 2023 | 6 hrs | 4,110 (74%) | Unnamed event |
| Nov 27, 2019 | 62 hrs | 2,739 (49%) | Heavy Snow |
| Mar 22, 2021 | 3 hrs | 2,395 (43%) | Unnamed event |
| Apr 16, 2016 | 2 hrs | 2,321 (42%) | Unnamed event |
| May 9, 2022 | 10 hrs | 2,258 (41%) | Unnamed event |
Over the 12 years from 2014 to 2025, Iron County recorded 553 distinct power outage events, averaging 3.2 hours per event.
The single worst outage on record in Iron County started June 6, 2023, lasting 6 hours and leaving up to 4,110 customers without power (74% of the county) at its peak.
July has historically been the worst month for outages in Iron County, with 83 events recorded during that month across the dataset.
Based on this history, Iron County earns a Reliability Grade of D, placing it in the 24th percentile nationally for grid reliability (higher percentile = more reliable).
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Similar counties in Wisconsin
Counties with the closest reliability grade and national percentile to Iron County.
| County | Grade | National percentile |
|---|---|---|
| Oconto County | D | 28th |
| Lincoln County | F | 18th |
| Langlade County | F | 16th |
| Marinette County | F | 15th |
| Menominee County | F | 15th |
Most reliable counties in Wisconsin
The top 3 counties in Wisconsin by reliability grade and percentile.
| County | Grade | National percentile |
|---|---|---|
| Jackson County | A | 97th |
| Manitowoc County | A | 94th |
| Taylor County | A | 93rd |
Least reliable counties in Wisconsin
The bottom 3 counties in Wisconsin by reliability grade and percentile.
| County | Grade | National percentile |
|---|---|---|
| Vilas County | F | 8th |
| Oneida County | F | 12th |
| Forest County | F | 14th |
Most reliable counties nationally
The top 3 counties nationally by reliability grade and percentile.
| County | State | Grade | National percentile |
|---|---|---|---|
| Clay County | South Dakota | A | 100th |
| Clearwater County | Minnesota | A | 99th |
| Limestone County | Alabama | A | 99th |
Least reliable counties nationally
The bottom 3 counties nationally by reliability grade and percentile.
| County | State | Grade | National percentile |
|---|---|---|---|
| Clay County | West Virginia | F | 0th |
| Lincoln County | West Virginia | F | 0th |
| Cameron Parish | Louisiana | F | 0th |
FAQ
How often does power go out in Iron County?
Between 2014 and 2025, Iron County recorded 553 outage events, averaging 3.2 hours each.
What is Iron County's reliability grade?
Iron County has a Reliability Grade of D, in the 24th national percentile.
What was the worst power outage in Iron County?
The worst outage on record started June 6, 2023, lasting 6 hours and affecting up to 4,110 customers.