Madison 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 |
|---|---|---|---|
| Mar 3, 2023 | 33 hrs | 28,099 (45%) | High Wind |
| Dec 24, 2022 | 2 hrs | 25,389 (41%) | Winter Storm Elliott |
| Dec 24, 2022 | 4 hrs | 22,968 (37%) | Winter Storm Elliott |
| May 6, 2021 | 24 hrs | 15,763 (25%) | Unnamed event |
| Mar 30, 2022 | 49 hrs | 14,035 (23%) | Strong Wind |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Madison County, Tennessee that day.
Over the 9 years from 2017 to 2025, Madison County recorded 885 distinct power outage events, averaging 1.9 hours per event.
The single worst outage on record in Madison County started March 3, 2023 (High Wind), lasting 33 hours and leaving up to 28,099 customers without power (45% of the county) at its peak.
July has historically been the worst month for outages in Madison County, with 106 events recorded during that month across the dataset.
Based on this history, Madison County earns a Reliability Grade of B, placing it in the 65th percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Tennessee
Counties with the closest reliability grade and national percentile to Madison County.
| County | Grade | National percentile |
|---|---|---|
| Montgomery County | B | 65th |
| Campbell County | B | 64th |
| Cocke County | B | 63rd |
| Claiborne County | B | 63rd |
| Obion County | B | 62nd |
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 Madison County?
Between 2017 and 2025, Madison County recorded 885 outage events, averaging 1.9 hours each.
What is Madison County's reliability grade?
Madison County has a Reliability Grade of B, in the 65th national percentile.
What was the worst power outage in Madison County?
The worst outage on record started March 3, 2023 (High Wind), lasting 33 hours and affecting up to 28,099 customers.