Wilson County Power Outage History
2015–2025 · Tennessee
Better than average — fewer or shorter outages than most counties. How grades are calculated
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 | 0 hrs | 21,411 (27%) | Thunderstorm Wind |
| May 4, 2020 | 64 hrs | 19,846 (25%) | Thunderstorm Wind |
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).
Sized for Wilson County's outage profile
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Outage-prep kit
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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 |
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.