Union CountyPower Outage History
2015–2025 · Indiana
Average — typical outage frequency and duration nationally.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Jun 23, 2016 | 23 hrs | 4,680 (81%) | Thunderstorm Wind |
| Jun 18, 2025 | 51 hrs | 2,696 (47%) | Unnamed event |
| Nov 7, 2023 | 3 hrs | 2,376 (41%) | Unnamed event |
| Sep 13, 2018 | <1 hr | 2,366 (41%) | Unnamed event |
| Jun 23, 2016 | 3 hrs | 2,340 (40%) | Thunderstorm Wind |
Over the 11 years from 2015 to 2025, Union County recorded 430 distinct power outage events, averaging 2.7 hours per event.
The single worst outage on record in Union County started June 23, 2016 (Thunderstorm Wind), lasting 23 hours and leaving up to 4,680 customers without power (81% of the county) at its peak.
July has historically been the worst month for outages in Union County, with 75 events recorded during that month across the dataset.
Based on this history, Union County earns a Reliability Grade of C, placing it in the 60th percentile nationally for grid reliability (higher percentile = more reliable).
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Similar counties in Indiana
Counties with the closest reliability grade and national percentile to Union County.
| County | Grade | National percentile |
|---|---|---|
| Rush County | B | 60th |
| Allen County | B | 60th |
| Dearborn County | B | 61st |
| Floyd County | C | 59th |
| Pulaski County | C | 59th |
Most reliable counties in Indiana
The top 3 counties in Indiana by reliability grade and percentile.
| County | Grade | National percentile |
|---|---|---|
| Cass County | A | 96th |
| Daviess County | A | 95th |
| Boone County | A | 95th |
Least reliable counties in Indiana
The bottom 3 counties in Indiana by reliability grade and percentile.
| County | Grade | National percentile |
|---|---|---|
| Brown County | F | 9th |
| Owen County | F | 12th |
| Crawford 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 Union County?
Between 2015 and 2025, Union County recorded 430 outage events, averaging 2.7 hours each.
What is Union County's reliability grade?
Union County has a Reliability Grade of C, in the 60th national percentile.
What was the worst power outage in Union County?
The worst outage on record started June 23, 2016 (Thunderstorm Wind), lasting 23 hours and affecting up to 4,680 customers.