Union CountyPower Outage History
What this grade means
Worse than average — more frequent or longer outages than most counties. This county's recorded history shows more frequent outages and/or longer restoration times than most US counties over the same 12-year period. If you live here, it's worth taking backup power more seriously than an average household would.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| May 17, 2025 | 41 hrs | 3,876 (48%) | Dense Fog |
| Jun 29, 2018 | 22 hrs | 3,829 (48%) | Heat |
| Jan 5, 2025 | 113 hrs | 3,386 (42%) | Ice Storm |
| Jun 17, 2024 | 4 hrs | 1,988 (25%) | Unnamed event |
| Sep 21, 2018 | <1 hr | 1,981 (25%) | Unnamed event |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Union County, Kentucky that day.
Over the 12 years from 2014 to 2025, Union County recorded 527 distinct power outage events, averaging 4.0 hours per event.
The single worst outage on record in Union County started May 17, 2025 (Dense Fog), lasting 41 hours and leaving up to 3,876 customers without power (48% of the county) at its peak.
July has historically been the worst month for outages in Union County, with 57 events recorded during that month across the dataset.
Based on this history, Union County earns a Reliability Grade of D, placing it in the 36th percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Kentucky
Counties with the closest reliability grade and national percentile to Union County.
| County | Grade | National percentile |
|---|---|---|
| Bell County | D | 36th |
| Fayette County | D | 37th |
| Washington County | D | 37th |
| Carlisle County | D | 37th |
| Bourbon County | D | 35th |
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 2014 and 2025, Union County recorded 527 outage events, averaging 4.0 hours each.
What is Union County's reliability grade?
Union County has a Reliability Grade of D, in the 36th national percentile.
What was the worst power outage in Union County?
The worst outage on record started May 17, 2025 (Dense Fog), lasting 41 hours and affecting up to 3,876 customers.