Harrison 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 |
|---|---|---|---|
| Mar 3, 2023 | 74 hrs | 4,636 (44%) | High Wind |
| Oct 16, 2025 | <1 hr | 4,236 (40%) | Unnamed event |
| Sep 27, 2024 | 53 hrs | 3,270 (31%) | Hurricane Helene |
| Nov 12, 2025 | <1 hr | 3,216 (31%) | Unnamed event |
| May 26, 2024 | 29 hrs | 1,949 (19%) | Thunderstorm Wind |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Harrison County, Kentucky that day.
Over the 12 years from 2014 to 2025, Harrison County recorded 545 distinct power outage events, averaging 2.4 hours per event.
The single worst outage on record in Harrison County started March 3, 2023 (High Wind), lasting 74 hours and leaving up to 4,636 customers without power (44% of the county) at its peak.
June has historically been the worst month for outages in Harrison County, with 70 events recorded during that month across the dataset.
Based on this history, Harrison County earns a Reliability Grade of C, placing it in the 54th percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Kentucky
Counties with the closest reliability grade and national percentile to Harrison County.
| County | Grade | National percentile |
|---|---|---|
| Henry County | C | 54th |
| Carroll County | C | 55th |
| Mason County | C | 53rd |
| Barren County | C | 53rd |
| Graves County | C | 55th |
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 Harrison County?
Between 2014 and 2025, Harrison County recorded 545 outage events, averaging 2.4 hours each.
What is Harrison County's reliability grade?
Harrison County has a Reliability Grade of C, in the 54th national percentile.
What was the worst power outage in Harrison County?
The worst outage on record started March 3, 2023 (High Wind), lasting 74 hours and affecting up to 4,636 customers.