Manitowoc CountyPower Outage History
What this grade means
Top 20% most reliable nationally — infrequent, short outages. This county ranks in the most reliable fifth of all US counties in our dataset, based on 12 years of real DOE outage records: outages happen less often here, and when they do occur they tend to be resolved quickly compared to the rest of the country. Baseline outage risk is low, though a severe local storm can still occasionally cause a longer-than-usual outage regardless of the long-term track record.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| May 8, 2020 | <1 hr | 27,135 (41%) | Unnamed event |
| Jul 21, 2019 | 3 hrs | 4,642 (7%) | Thunderstorm Wind |
| Jun 11, 2016 | 24 hrs | 4,376 (7%) | Thunderstorm Wind |
| Jul 22, 2019 | 6 hrs | 4,293 (7%) | Thunderstorm Wind |
| Jul 22, 2019 | 5 hrs | 3,639 (6%) | Thunderstorm Wind |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Manitowoc County, Wisconsin that day.
Over the 11 years from 2015 to 2025, Manitowoc County recorded 219 distinct power outage events, averaging 2.4 hours per event.
The single worst outage on record in Manitowoc County started May 8, 2020, lasting less than 1 hour and leaving up to 27,135 customers without power (41% of the county) at its peak.
July has historically been the worst month for outages in Manitowoc County, with 37 events recorded during that month across the dataset.
Based on this history, Manitowoc County earns a Reliability Grade of A, placing it in the 94th percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Wisconsin
Counties with the closest reliability grade and national percentile to Manitowoc County.
| County | Grade | National percentile |
|---|---|---|
| Taylor County | A | 93rd |
| Price County | A | 92nd |
| Crawford County | A | 92nd |
| Dane County | A | 92nd |
| Jackson County | A | 97th |
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 Manitowoc County?
Between 2015 and 2025, Manitowoc County recorded 219 outage events, averaging 2.4 hours each.
What is Manitowoc County's reliability grade?
Manitowoc County has a Reliability Grade of A, in the 94th national percentile.
What was the worst power outage in Manitowoc County?
The worst outage on record started May 8, 2020, lasting less than 1 hour and affecting up to 27,135 customers.