Montgomery County Power Outage History
2015–2025 · Tennessee
Better than average — fewer or shorter outages than most counties. How grades are calculated
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| May 28, 2025 | 1 hrs | 83,206 (69%) | Unnamed event |
| Mar 3, 2023 | 88 hrs | 48,425 (40%) | High Wind |
| Oct 26, 2019 | 16 hrs | 36,834 (31%) | Tropical Storm Olga |
| Jun 17, 2022 | 28 hrs | 18,943 (16%) | Thunderstorm Wind |
| May 26, 2024 | 32 hrs | 18,123 (15%) | Thunderstorm Wind |
Over the 11 years from 2015 to 2025, Montgomery County recorded 1,034 distinct power outage events, averaging 1.9 hours per event.
The single worst outage on record in Montgomery County started May 28, 2025, lasting 1 hours and leaving up to 83,206 customers without power (69% of the county) at its peak.
July has historically been the worst month for outages in Montgomery County, with 136 events recorded during that month across the dataset.
Based on this history, Montgomery County earns a Reliability Grade of B, placing it in the 65th percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Montgomery 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 Montgomery County.
| County | Grade | National percentile |
|---|---|---|
| Madison County | B | 65th |
| Campbell County | B | 64th |
| Cocke County | B | 63rd |
| Claiborne County | B | 63rd |
| Obion County | B | 62nd |
FAQ
How often does power go out in Montgomery County?
Between 2015 and 2025, Montgomery County recorded 1,034 outage events, averaging 1.9 hours each.
What is Montgomery County's reliability grade?
Montgomery County has a Reliability Grade of B, in the 65th national percentile.
What was the worst power outage in Montgomery County?
The worst outage on record started May 28, 2025, lasting 1 hours and affecting up to 83,206 customers.