Clay CountyPower Outage History
What this grade means
(How grades are calculated)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 4, 2015 | 2 hrs | 5,045 (95%) | Flash Flood |
| Nov 13, 2023 | 2 hrs | 4,837 (91%) | Drought |
| Jun 12, 2023 | 1 hrs | 4,787 (90%) | Thunderstorm Wind |
| May 2, 2021 | 6 hrs | 4,703 (88%) | Unnamed event |
| Aug 3, 2019 | <1 hr | 4,622 (87%) | Unnamed event |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Clay County, Tennessee that day.
Over the 12 years from 2014 to 2025, Clay County recorded 726 distinct power outage events, averaging 1.7 hours per event.
The single worst outage on record in Clay County started July 4, 2015 (Flash Flood), lasting 2 hours and leaving up to 5,045 customers without power (95% of the county) at its peak.
June has historically been the worst month for outages in Clay County, with 102 events recorded during that month across the dataset.
Based on this history, Clay County earns a Reliability Grade of D, placing it in the 24th percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Tennessee
Counties with the closest reliability grade and national percentile to Clay County.
| County | Grade | National percentile |
|---|---|---|
| Pickett County | D | 26th |
| Stewart County | D | 21st |
| Sevier County | D | 20th |
| Meigs County | D | 29th |
| Henry County | D | 29th |
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 Clay County?
Between 2014 and 2025, Clay County recorded 726 outage events, averaging 1.7 hours each.
What is Clay County's reliability grade?
Clay County has a Reliability Grade of D, in the 24th national percentile.
What was the worst power outage in Clay County?
The worst outage on record started July 4, 2015 (Flash Flood), lasting 2 hours and affecting up to 5,045 customers.