Carroll CountyPower Outage History
2014–2025 · Kentucky
Average — typical outage frequency and duration nationally.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Mar 1, 2017 | 58 hrs | 4,718 (74%) | Thunderstorm Wind |
| Nov 12, 2025 | <1 hr | 3,151 (50%) | Unnamed event |
| Nov 16, 2020 | 3 hrs | 1,920 (30%) | Unnamed event |
| Nov 16, 2020 | <1 hr | 1,918 (30%) | Unnamed event |
| Jul 7, 2019 | 3 hrs | 1,712 (27%) | Unnamed event |
Over the 12 years from 2014 to 2025, Carroll County recorded 387 distinct power outage events, averaging 2.6 hours per event.
The single worst outage on record in Carroll County started March 1, 2017 (Thunderstorm Wind), lasting 58 hours and leaving up to 4,718 customers without power (74% of the county) at its peak.
June has historically been the worst month for outages in Carroll County, with 56 events recorded during that month across the dataset.
Based on this history, Carroll County earns a Reliability Grade of C, placing it in the 55th percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Carroll County's outage profile
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Similar counties in Kentucky
Counties with the closest reliability grade and national percentile to Carroll County.
| County | Grade | National percentile |
|---|---|---|
| Graves County | C | 55th |
| Harrison County | C | 54th |
| Henry County | C | 54th |
| Casey County | C | 56th |
| Crittenden County | C | 56th |
Most reliable counties in Kentucky
The top 3 counties in Kentucky by reliability grade and percentile.
| County | Grade | National percentile |
|---|---|---|
| Taylor County | A | 96th |
| Webster County | A | 92nd |
| Green County | A | 91st |
Least reliable counties in Kentucky
The bottom 3 counties in Kentucky by reliability grade and percentile.
| County | Grade | National percentile |
|---|---|---|
| Leslie County | F | 0th |
| Lawrence County | F | 1st |
| Knott County | F | 2nd |
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 Carroll County?
Between 2014 and 2025, Carroll County recorded 387 outage events, averaging 2.6 hours each.
What is Carroll County's reliability grade?
Carroll County has a Reliability Grade of C, in the 55th national percentile.
What was the worst power outage in Carroll County?
The worst outage on record started March 1, 2017 (Thunderstorm Wind), lasting 58 hours and affecting up to 4,718 customers.