Blount CountyPower Outage History
What this grade means
Average — typical outage frequency and duration nationally. This county sits in the middle of the national distribution — its outage frequency and duration over the past 12 years are close to the nationwide median, neither notably better nor worse than most other US counties. A typical amount of backup-power preparedness is reasonable here.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Jul 5, 2020 | 3 hrs | 19,120 (27%) | Flash Flood |
| Mar 3, 2023 | 47 hrs | 13,526 (19%) | High Wind |
| Jul 30, 2024 | 3 hrs | 11,644 (16%) | Thunderstorm Wind |
| Aug 27, 2025 | 3 hrs | 11,202 (16%) | Unnamed event |
| Aug 8, 2024 | <1 hr | 10,974 (15%) | Thunderstorm Wind |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Blount County, Tennessee that day.
Over the 12 years from 2014 to 2025, Blount County recorded 1,257 distinct power outage events, averaging 1.9 hours per event.
The single worst outage on record in Blount County started July 5, 2020 (Flash Flood), lasting 3 hours and leaving up to 19,120 customers without power (27% of the county) at its peak.
May has historically been the worst month for outages in Blount County, with 136 events recorded during that month across the dataset.
Based on this history, Blount County earns a Reliability Grade of C, placing it in the 52nd percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Tennessee
Counties with the closest reliability grade and national percentile to Blount County.
| County | Grade | National percentile |
|---|---|---|
| Trousdale County | C | 52nd |
| Knox County | C | 52nd |
| Robertson County | C | 53rd |
| Cumberland County | C | 52nd |
| Sullivan County | C | 55th |
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 Blount County?
Between 2014 and 2025, Blount County recorded 1,257 outage events, averaging 1.9 hours each.
What is Blount County's reliability grade?
Blount County has a Reliability Grade of C, in the 52nd national percentile.
What was the worst power outage in Blount County?
The worst outage on record started July 5, 2020 (Flash Flood), lasting 3 hours and affecting up to 19,120 customers.