Anderson 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 |
|---|---|---|---|
| Jul 2, 2023 | 49 hrs | 9,604 (76%) | Hail |
| Nov 12, 2025 | <1 hr | 7,276 (58%) | Unnamed event |
| Jan 31, 2021 | 2 hrs | 6,275 (50%) | Unnamed event |
| Jan 3, 2018 | 6 hrs | 6,139 (49%) | Unnamed event |
| Sep 20, 2015 | <1 hr | 6,066 (48%) | Unnamed event |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Anderson County, Kentucky that day.
Over the 12 years from 2014 to 2025, Anderson County recorded 559 distinct power outage events, averaging 3.0 hours per event.
The single worst outage on record in Anderson County started July 2, 2023 (Hail), lasting 49 hours and leaving up to 9,604 customers without power (76% of the county) at its peak.
July has historically been the worst month for outages in Anderson County, with 79 events recorded during that month across the dataset.
Based on this history, Anderson County earns a Reliability Grade of D, placing it in the 26th percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Kentucky
Counties with the closest reliability grade and national percentile to Anderson County.
| County | Grade | National percentile |
|---|---|---|
| Bracken County | D | 26th |
| Allen County | D | 27th |
| Fleming County | D | 26th |
| Rowan County | D | 25th |
| Oldham County | D | 28th |
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 Anderson County?
Between 2014 and 2025, Anderson County recorded 559 outage events, averaging 3.0 hours each.
What is Anderson County's reliability grade?
Anderson County has a Reliability Grade of D, in the 26th national percentile.
What was the worst power outage in Anderson County?
The worst outage on record started July 2, 2023 (Hail), lasting 49 hours and affecting up to 9,604 customers.