Jefferson County, Tennessee Power Outages, 2015 to 2023

Jefferson County, Tennessee had 9 major outages from 2015 to 2023

Below middle outage time among US counties

Residents here averaged 0.53 times the US outage time per person and 0.57 times the Tennessee rate. It ranks 39 of 78 in the state, where 1 has the most. Data confidence: High, with 9 years of records.

1.0major outages per year

4 of 9years with a major outage

63 hrslongest major outage

Aug, Dechardest months

August and December made up 46% of this county's outage time. The largest outage on record began Aug 7, 2023, reached 11,865 customers, and left at least 200 customers out for 16.2 hours.

Outage time per resident, rated Tennessee counties

MostLeast

Outage impact by year

Customer-hours without power. 1,000 customers out for 2 hours is 2,000 customer-hours.

100K

200K

300K

400K

2015'152016'162017'172018'182019'192020'202021'212022'222023'23

Show yearly numbers

Year	Customer-hours	Reported outages	Major outages
2015	2,421	1	0
2016	112	1	0
2017	18,692	8	1
2018	5,848	6	0
2019	29,597	23	0
2020	151,211	34	3
2021	25,751	15	0
2022	126,097	57	1
2023	333,587	73	4

When outages hit

Share of this county's customer-hours by month.

10%

20%

30%

40%

JanJFebFMarMAprAMayMJunJJulJAugASepSOctONovNDecD

Largest outages on record

Start date	Hours	Peak customers	Customer-hours
Aug 7, 2023	16.2	11,865	123,248
Dec 26, 2020	63.2	1,268	51,086
Jul 31, 2020	15.0	5,280	42,909
Aug 8, 2023	33.0	4,892	38,633
Nov 29, 2023	6.0	9,721	37,544

Hours measure how long at least 200 customers in the county were out. Most customers get power back sooner.

Size your backup battery

Start with what you would keep running. Wattages are typical averages, so check your own appliances.

Phones, Wi-Fi, lights, about 60 WRefrigerator, about 60 WChest freezer, about 40 WGas furnace fan, about 160 W

Hours to cover: 24

1,700 Whof battery capacity, allowing for about 15% conversion loss

If anyone relies on medical equipment, plan that with their provider. Run portable fuel generators outdoors only, at least 20 feet from doors, windows and vents. See the outage checklist.

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How to read this

A major outage lasted at least 8 hours and reached customers equal to at least 1% of county residents.
Records cover outages of at least 200 customers in a county. They do not show what happened on your street.
Utilities that do not report can make a county look better than it is. Data ends in 2023. Read the full method.