massoutage

2020 Tennessee Power Outage Report

In 2020, the average Tennessee customer went without power for about 6.5 hours — the 18th worst of any US state that year, 1.3× the state's decade average. Figures from DOE/ORNL EAGLE-I.

Avg hrs / customer
6.5
Peak customers out
132,893
Rank (worst state)
18th
Counties affected
20

Tennessee outages over the decade

Average hours without power per customer, 2020 highlighted.

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

Hardest-hit Tennessee counties in 2020

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

1Davidson County132,8932Shelby County49,2243Knox County40,5344Wilson County35,8315Sevier County27,9626Maury County24,5617Blount County19,1208Rutherford County17,1889Bradley County13,96710Williamson County12,54011Cumberland County11,46612Lawrence County10,81013Henry County9,93014Madison County9,82915Cheatham County9,67616Campbell County9,63417Union County8,59118Coffee County8,34619Sumner County8,26220Washington County8,241

Biggest Tennessee outages of 2020

CountyBeganPeak customers out
Davidson CountyMay 4, 2020132,893
Davidson CountyMay 2, 2020124,024
Davidson CountyMay 4, 202094,768
Davidson CountyMarch 3, 202049,651
Shelby CountyMay 22, 202049,224
Knox CountyJune 19, 202040,534
Wilson CountyMarch 3, 202035,831
Knox CountyMay 27, 202034,684
Knox CountyMarch 29, 202030,073
Sevier CountyDecember 24, 202027,962
Tennessee by year:20252024202320222021201920182017
Other states in 2020:LAMEOKIAALNC

Part of the 2020 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.