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2025 Tennessee Power Outage Report

In 2025, the average Tennessee customer went without power for about 4.3 hours — the 27th worst of any US state that year, below the state's decade average. Figures from DOE/ORNL EAGLE-I.

Avg hrs / customer
4.3
Peak customers out
114,753
Rank (worst state)
27th
Counties affected
20

Tennessee outages over the decade

Average hours without power per customer, 2025 highlighted.

2.4h20152.5h20165.6h20172.1h20182.7h20196.5h20203.7h20219.2h202211.1h20234.8h20244.3h2025

Hardest-hit Tennessee counties in 2025

By peak customers out during the year's worst event.

1Hamilton County114,7532Montgomery County83,2063Shelby County73,3524Davidson County50,4635Knox County19,6496Rutherford County16,0307Cumberland County14,9448Madison County13,9119Blount County11,20210Williamson County10,70011Hancock County9,84212Sumner County9,30313Greene County9,22114Claiborne County8,93815Bradley County8,32716Sevier County7,82517Washington County7,75218Sequatchie County7,61219Rhea County7,40320Macon County7,401

Biggest Tennessee outages of 2025

CountyBeganPeak customers out
Hamilton CountyJune 12, 2025114,753
Montgomery CountyMay 21, 202583,206
Shelby CountyFebruary 25, 202573,352
Davidson CountyApril 2, 202550,463
Hamilton CountyJune 13, 202526,004
Davidson CountyMay 16, 202522,594
Knox CountyDecember 18, 202519,649
Davidson CountyMay 28, 202519,192
Knox CountyMay 17, 202517,546
Shelby CountyJune 9, 202516,518
Tennessee by year:20242023202220212020201920182017
Other states in 2025:WVMIAKPANCMO

Part of the 2025 US Power Outage Report. Source: DOE/ORNL EAGLE-I. “Avg hours per customer” is a SAIDI-like measure (outage customer-minutes ÷ tracked customers); coverage varies by year.