Grant 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 22, 2015 | 17 hrs | 7,417 (37%) | Hail |
| Jun 23, 2015 | 1 hrs | 5,829 (29%) | Hail |
| Jun 23, 2015 | 1 hrs | 5,829 (29%) | Hail |
| Jun 23, 2015 | 0 hrs | 5,827 (29%) | Hail |
| Jun 23, 2015 | 0 hrs | 5,786 (29%) | Hail |
Over the 12 years from 2014 to 2025, Grant County recorded 416 distinct power outage events, averaging 1.9 hours per event.
The single worst outage on record in Grant County started June 22, 2015 (Hail), lasting 17 hours and leaving up to 7,417 customers without power (37% of the county) at its peak.
July has historically been the worst month for outages in Grant County, with 75 events recorded during that month across the dataset.
Based on this history, Grant County earns a Reliability Grade of B, placing it in the 79th percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Grant County's outage profile
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Outage-prep kit
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Similar counties in Wisconsin
Counties with the closest reliability grade and national percentile to Grant County.
| County | Grade | National percentile |
|---|---|---|
| Brown County | B | 79th |
| Lafayette County | B | 79th |
| Clark County | B | 78th |
| Winnebago County | B | 77th |
| Adams County | B | 76th |
FAQ
How often does power go out in Grant County?
Between 2014 and 2025, Grant County recorded 416 outage events, averaging 1.9 hours each.
What is Grant County's reliability grade?
Grant County has a Reliability Grade of B, in the 79th national percentile.
What was the worst power outage in Grant County?
The worst outage on record started June 22, 2015 (Hail), lasting 17 hours and affecting up to 7,417 customers.