Wilson 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 |
|---|---|---|---|
| Mar 3, 2020 | 5 hrs | 35,831 (45%) | Tornado |
| Mar 3, 2020 | 2 hrs | 27,221 (34%) | Tornado |
| May 4, 2020 | 2 hrs | 23,545 (29%) | Thunderstorm Wind |
| May 4, 2020 | <1 hr | 21,411 (27%) | Thunderstorm Wind |
| May 4, 2020 | 64 hrs | 19,846 (25%) | Thunderstorm Wind |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Wilson County, Tennessee that day.
Over the 11 years from 2015 to 2025, Wilson County recorded 712 distinct power outage events, averaging 1.2 hours per event.
The single worst outage on record in Wilson County started March 3, 2020 (Tornado), lasting 5 hours and leaving up to 35,831 customers without power (45% of the county) at its peak.
June has historically been the worst month for outages in Wilson County, with 100 events recorded during that month across the dataset.
Based on this history, Wilson County earns a Reliability Grade of B, placing it in the 79th percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Tennessee
Counties with the closest reliability grade and national percentile to Wilson County.
| County | Grade | National percentile |
|---|---|---|
| Washington County | B | 79th |
| McMinn County | B | 78th |
| Cannon County | B | 78th |
| Franklin County | B | 78th |
| Marshall County | B | 77th |
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 Wilson County?
Between 2015 and 2025, Wilson County recorded 712 outage events, averaging 1.2 hours each.
What is Wilson County's reliability grade?
Wilson County has a Reliability Grade of B, in the 79th national percentile.
What was the worst power outage in Wilson County?
The worst outage on record started March 3, 2020 (Tornado), lasting 5 hours and affecting up to 35,831 customers.