Lake CountyPower Outage History
2016–2024 · Tennessee
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 |
|---|---|---|---|
| Oct 7, 2017 | 4 hrs | 2,641 (93%) | Unnamed event |
| Jun 7, 2017 | <1 hr | 2,610 (92%) | Unnamed event |
| Jun 10, 2017 | 2 hrs | 2,610 (92%) | Unnamed event |
| Apr 30, 2017 | 7 hrs | 1,878 (66%) | Thunderstorm Wind |
| Oct 12, 2019 | <1 hr | 1,322 (47%) | Unnamed event |
Over the 9 years from 2016 to 2024, Lake County recorded 280 distinct power outage events, averaging 1.8 hours per event.
The single worst outage on record in Lake County started October 7, 2017, lasting 4 hours and leaving up to 2,641 customers without power (93% of the county) at its peak.
May has historically been the worst month for outages in Lake County, with 38 events recorded during that month across the dataset.
Based on this history, Lake County earns a Reliability Grade of C, placing it in the 58th percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Lake County's outage profile
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Read our mission →Similar counties in Tennessee
Counties with the closest reliability grade and national percentile to Lake County.
| County | Grade | National percentile |
|---|---|---|
| Sumner County | C | 59th |
| Sullivan County | C | 55th |
| Robertson County | C | 53rd |
| Rhea County | B | 62nd |
| Obion County | B | 62nd |
Most reliable counties in Tennessee
The top 3 counties in Tennessee by reliability grade and percentile.
| County | Grade | National percentile |
|---|---|---|
| Lincoln County | A | 99th |
| Jackson County | A | 99th |
| Scott County | A | 98th |
Least reliable counties in Tennessee
The bottom 3 counties in Tennessee by reliability grade and percentile.
| County | Grade | National percentile |
|---|---|---|
| Shelby County | F | 8th |
| Sevier County | D | 20th |
| Stewart County | D | 21st |
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 Lake County?
Between 2016 and 2024, Lake County recorded 280 outage events, averaging 1.8 hours each.
What is Lake County's reliability grade?
Lake County has a Reliability Grade of C, in the 58th national percentile.
What was the worst power outage in Lake County?
The worst outage on record started October 7, 2017, lasting 4 hours and affecting up to 2,641 customers.