Warren CountyPower Outage History
What this grade means
Average — typical outage frequency and duration nationally. This county sits in the middle of the national distribution — its outage frequency and duration over the past 12 years are close to the nationwide median, neither notably better nor worse than most other US counties. A typical amount of backup-power preparedness is reasonable here.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Dec 11, 2021 | 27 hrs | 43,157 (63%) | Tornado |
| Dec 24, 2022 | 7 hrs | 36,559 (53%) | Winter Storm |
| May 17, 2025 | 43 hrs | 28,005 (41%) | Thunderstorm Wind |
| Mar 3, 2023 | 121 hrs | 27,331 (40%) | High Wind |
| Aug 17, 2023 | 1 hrs | 16,671 (24%) | Unnamed event |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Warren County, Kentucky that day.
Over the 9 years from 2017 to 2025, Warren County recorded 745 distinct power outage events, averaging 2.4 hours per event.
The single worst outage on record in Warren County started December 11, 2021 (Tornado), lasting 27 hours and leaving up to 43,157 customers without power (63% of the county) at its peak.
July has historically been the worst month for outages in Warren County, with 102 events recorded during that month across the dataset.
Based on this history, Warren County earns a Reliability Grade of C, placing it in the 40th percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Kentucky
Counties with the closest reliability grade and national percentile to Warren County.
| County | Grade | National percentile |
|---|---|---|
| Spencer County | C | 41st |
| Pendleton County | D | 40th |
| Nicholas County | D | 39th |
| Gallatin County | C | 42nd |
| Lincoln County | C | 42nd |
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 Warren County?
Between 2017 and 2025, Warren County recorded 745 outage events, averaging 2.4 hours each.
What is Warren County's reliability grade?
Warren County has a Reliability Grade of C, in the 40th national percentile.
What was the worst power outage in Warren County?
The worst outage on record started December 11, 2021 (Tornado), lasting 27 hours and affecting up to 43,157 customers.