St. Croix CountyPower Outage History
What this grade means
Better than average — fewer or shorter outages than most counties. This county's outage history is better than the national median: recorded outages are less frequent and/or shorter in duration than a typical US county experienced over the same 12-year period. It isn't in the top tier nationally, but its track record points to lower-than-average outage risk.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| May 11, 2022 | <1 hr | 17,765 (38%) | Hail |
| Sep 17, 2021 | 35 hrs | 13,380 (29%) | Thunderstorm Wind |
| Jul 29, 2025 | 35 hrs | 12,121 (26%) | Thunderstorm Wind |
| Jul 29, 2025 | <1 hr | 11,688 (25%) | Thunderstorm Wind |
| Jul 24, 2023 | 18 hrs | 11,302 (24%) | Thunderstorm Wind |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for St. Croix County, Wisconsin that day.
Over the 12 years from 2014 to 2025, St. Croix County recorded 269 distinct power outage events, averaging 3.0 hours per event.
The single worst outage on record in St. Croix County started May 11, 2022 (Hail), lasting less than 1 hour and leaving up to 17,765 customers without power (38% of the county) at its peak.
July has historically been the worst month for outages in St. Croix County, with 45 events recorded during that month across the dataset.
Based on this history, St. Croix County earns a Reliability Grade of B, placing it in the 73rd percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Wisconsin
Counties with the closest reliability grade and national percentile to St. Croix County.
| County | Grade | National percentile |
|---|---|---|
| Buffalo County | B | 74th |
| Dodge County | B | 74th |
| Green Lake County | B | 73rd |
| Kewaunee County | B | 75th |
| Sheboygan County | B | 72nd |
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 St. Croix County?
Between 2014 and 2025, St. Croix County recorded 269 outage events, averaging 3.0 hours each.
What is St. Croix County's reliability grade?
St. Croix County has a Reliability Grade of B, in the 73rd national percentile.
What was the worst power outage in St. Croix County?
The worst outage on record started May 11, 2022 (Hail), lasting less than 1 hour and affecting up to 17,765 customers.