McMinn County Power Outage History
2019–2025 · 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 |
|---|---|---|---|
| Mar 3, 2023 | 15 hrs | 3,518 (12%) | Thunderstorm Wind |
| Jul 30, 2024 | 3 hrs | 3,477 (11%) | Thunderstorm Wind |
| Mar 3, 2023 | 3 hrs | 3,374 (11%) | Thunderstorm Wind |
| Mar 31, 2022 | 18 hrs | 3,307 (11%) | Unnamed event |
| Jul 29, 2024 | 1 hrs | 2,928 (10%) | Unnamed event |
Over the 7 years from 2019 to 2025, McMinn County recorded 441 distinct power outage events, averaging 2.1 hours per event.
The single worst outage on record in McMinn County started March 3, 2023 (Thunderstorm Wind), lasting 15 hours and leaving up to 3,518 customers without power (12% of the county) at its peak.
March has historically been the worst month for outages in McMinn County, with 56 events recorded during that month across the dataset.
Based on this history, McMinn County earns a Reliability Grade of B, placing it in the 78th percentile nationally for grid reliability (higher percentile = more reliable).
Sized for McMinn County's outage profile
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Outage-prep kit
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Similar counties in Tennessee
Counties with the closest reliability grade and national percentile to McMinn County.
| County | Grade | National percentile |
|---|---|---|
| Cannon County | B | 78th |
| Franklin County | B | 78th |
| Marshall County | B | 77th |
| Marion County | B | 77th |
| Wilson County | B | 79th |
FAQ
How often does power go out in McMinn County?
Between 2019 and 2025, McMinn County recorded 441 outage events, averaging 2.1 hours each.
What is McMinn County's reliability grade?
McMinn County has a Reliability Grade of B, in the 78th national percentile.
What was the worst power outage in McMinn County?
The worst outage on record started March 3, 2023 (Thunderstorm Wind), lasting 15 hours and affecting up to 3,518 customers.