Cocke CountyPower Outage History
What this grade means
Better than average — fewer or shorter outages than most counties. This county's outage history is better than the national median: recorded outages are less frequent and/or shorter in duration than a typical US county experienced over the same 12-year period. It isn't in the top tier nationally, but its track record points to lower-than-average outage risk.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Apr 7, 2021 | 2 hrs | 16,668 (86%) | Unnamed event |
| Aug 18, 2024 | 3 hrs | 5,993 (31%) | Unnamed event |
| Sep 27, 2024 | 79 hrs | 5,232 (27%) | Tropical Storm Helene |
| Apr 1, 2023 | 30 hrs | 4,356 (22%) | Unnamed event |
| Oct 17, 2025 | 1 hrs | 3,539 (18%) | Unnamed event |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Cocke County, Tennessee that day.
Over the 9 years from 2017 to 2025, Cocke County recorded 437 distinct power outage events, averaging 2.9 hours per event.
The single worst outage on record in Cocke County started April 7, 2021, lasting 2 hours and leaving up to 16,668 customers without power (86% of the county) at its peak.
December has historically been the worst month for outages in Cocke County, with 56 events recorded during that month across the dataset.
Based on this history, Cocke County earns a Reliability Grade of B, placing it in the 63rd percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Tennessee
Counties with the closest reliability grade and national percentile to Cocke County.
| County | Grade | National percentile |
|---|---|---|
| Claiborne County | B | 63rd |
| Obion County | B | 62nd |
| Campbell County | B | 64th |
| Rhea County | B | 62nd |
| Madison County | B | 65th |
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 Cocke County?
Between 2017 and 2025, Cocke County recorded 437 outage events, averaging 2.9 hours each.
What is Cocke County's reliability grade?
Cocke County has a Reliability Grade of B, in the 63rd national percentile.
What was the worst power outage in Cocke County?
The worst outage on record started April 7, 2021, lasting 2 hours and affecting up to 16,668 customers.