Henry County power outages

Tennessee outage history from 2018 to 2023, with the largest outages and a backup battery estimate.

Henry County, Tennessee had 11 major outages from 2018 to 2023

Higher outage time among US counties

Residents here averaged 2.27 times the US outage time per person and 2.42 times the Tennessee rate. It ranks 3 of 78 in the state, where 1 has the most. Data confidence: Medium, with 6 years of records.

1.8major outages per year
4 of 6years with a major outage
74 hrslongest major outage
Mar, Mayhardest months

March and May made up 55% of this county's outage time. The largest outage on record began Mar 3, 2023, reached 13,970 customers, and left at least 200 customers out for 70.2 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.

0
200K
400K
600K
800K
2018'182019'192020'202021'212022'222023'23
Show yearly numbers
YearCustomer-hoursReported outagesMajor outages
201822410
20191,01310
2020251,215952
2021132,546803
2022181,5021063
2023527,5011213

When outages hit

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

0%
10%
20%
30%
40%
JanJFebFMarMAprAMayMJunJJulJAugASepSOctONovNDecD

Largest outages on record

Start dateHoursPeak customersCustomer-hours
Mar 3, 202370.213,970335,979
May 3, 202073.89,930165,805
Jul 19, 202316.810,95443,366
Dec 11, 202151.81,51038,920
Feb 3, 202229.06,29031,130

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.

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.