Clay CountyPower Outage History
2014–2025 · Tennessee
Worse than average — more frequent or longer outages than most counties.
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 |
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).
Sized for Clay County's outage profile
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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 in Tennessee
The top 3 counties in Tennessee by reliability grade and percentile.
| County | Grade | National percentile |
|---|---|---|
| Lincoln County | A | 99th |
| Jackson County | A | 99th |
| Scott County | A | 98th |
Least reliable counties in Tennessee
The bottom 3 counties in Tennessee by reliability grade and percentile.
| County | Grade | National percentile |
|---|---|---|
| Shelby County | F | 8th |
| Sevier County | D | 20th |
| Stewart County | D | 21st |
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.