Overton County Power Outage History
2015–2025 · Tennessee
Top 20% most reliable nationally — infrequent, short outages. How grades are calculated
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| May 13, 2015 | 2 hrs | 2,714 (20%) | Unnamed event |
| Oct 18, 2016 | 6 hrs | 2,701 (20%) | Unnamed event |
| Jul 4, 2015 | 1 hrs | 2,697 (20%) | Thunderstorm Wind |
| May 2, 2018 | 3 hrs | 2,660 (20%) | Unnamed event |
| Jul 20, 2018 | 1 hrs | 2,651 (20%) | Thunderstorm Wind |
Over the 11 years from 2015 to 2025, Overton County recorded 221 distinct power outage events, averaging 2.0 hours per event.
The single worst outage on record in Overton County started May 13, 2015, lasting 2 hours and leaving up to 2,714 customers without power (20% of the county) at its peak.
July has historically been the worst month for outages in Overton County, with 44 events recorded during that month across the dataset.
Based on this history, Overton County earns a Reliability Grade of A, placing it in the 88th percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Overton County's outage profile
See more picks in our Best Small Power Stations (Under 1,000Wh) roundup.
Outage-prep kit
See our outage-prep guides.
Similar counties in Tennessee
Counties with the closest reliability grade and national percentile to Overton County.
| County | Grade | National percentile |
|---|---|---|
| Hamilton County | A | 88th |
| Gibson County | A | 88th |
| Hamblen County | A | 90th |
| Williamson County | A | 90th |
| Anderson County | A | 91st |
FAQ
How often does power go out in Overton County?
Between 2015 and 2025, Overton County recorded 221 outage events, averaging 2.0 hours each.
What is Overton County's reliability grade?
Overton County has a Reliability Grade of A, in the 88th national percentile.
What was the worst power outage in Overton County?
The worst outage on record started May 13, 2015, lasting 2 hours and affecting up to 2,714 customers.