massoutage

2023 Tennessee Power Outage Report

In 2023, the average Tennessee customer went without power for about 11.1 hours — the 10th worst of any US state that year, 2.2× the state's decade average. Figures from DOE/ORNL EAGLE-I.

Avg hrs / customer
11.1
Peak customers out
138,851
Rank (worst state)
10th
Counties affected
20

Tennessee outages over the decade

Average hours without power per customer, 2023 highlighted.

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

Hardest-hit Tennessee counties in 2023

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

1Shelby County138,8512Davidson County104,3593Knox County68,0014Montgomery County48,4255Sumner County35,7326Hamilton County35,3667Madison County28,0998Tipton County17,4179Fayette County16,64610Washington County15,89811Sullivan County15,05312Sevier County14,00213Henry County13,97014Blount County13,52615Giles County13,23216Jefferson County11,86517Williamson County11,34018Cumberland County11,30919Maury County10,67720Robertson County9,442

Biggest Tennessee outages of 2023

CountyBeganPeak customers out
Shelby CountyJuly 17, 2023138,851
Shelby CountyJune 11, 2023120,822
Davidson CountyMarch 3, 2023104,359
Knox CountyAugust 6, 202368,001
Montgomery CountyMarch 3, 202348,425
Shelby CountyMarch 28, 202337,707
Sumner CountyDecember 9, 202335,732
Hamilton CountyNovember 13, 202335,366
Davidson CountyJune 29, 202331,952
Shelby CountyFebruary 28, 202331,058
Tennessee by year:20252024202220212020201920182017
Other states in 2023:MEMIKYOKARWV

Part of the 2023 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.