Loudon 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 |
|---|---|---|---|
| Jul 16, 2020 | <1 hr | 6,765 (24%) | Unnamed event |
| Aug 20, 2019 | <1 hr | 6,439 (22%) | Unnamed event |
| May 21, 2025 | 5 hrs | 6,203 (22%) | Thunderstorm Wind |
| May 6, 2022 | 18 hrs | 5,319 (18%) | Thunderstorm Wind |
| Feb 28, 2024 | 11 hrs | 5,164 (18%) | Thunderstorm Wind |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Loudon County, Tennessee that day.
Over the 11 years from 2015 to 2025, Loudon County recorded 517 distinct power outage events, averaging 1.9 hours per event.
The single worst outage on record in Loudon County started July 16, 2020, lasting less than 1 hour and leaving up to 6,765 customers without power (24% of the county) at its peak.
July has historically been the worst month for outages in Loudon County, with 73 events recorded during that month across the dataset.
Based on this history, Loudon County earns a Reliability Grade of B, placing it in the 69th percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Tennessee
Counties with the closest reliability grade and national percentile to Loudon County.
| County | Grade | National percentile |
|---|---|---|
| Maury County | B | 68th |
| Coffee County | B | 69th |
| Jefferson County | B | 70th |
| Sequatchie County | B | 70th |
| Haywood County | B | 72nd |
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 Loudon County?
Between 2015 and 2025, Loudon County recorded 517 outage events, averaging 1.9 hours each.
What is Loudon County's reliability grade?
Loudon County has a Reliability Grade of B, in the 69th national percentile.
What was the worst power outage in Loudon County?
The worst outage on record started July 16, 2020, lasting less than 1 hour and affecting up to 6,765 customers.