Power Out Map
– 0% of Henry out 0 customers out in Tennessee

Power outage history

Henry County Tennessee

12hours

without power for the average customer in a typical year, 2018–2025

5th most of 73 in Tennessee 1.9× the national median

Worst outage on record Mar 3, 2023 63% of customers out · 90% back in 2.3 days
Hours without power, average customer per year 12h / yr State average 5.8 h · national median 6.6 h
Major outages a year 6.8 Peaks over 10% of customers or 50,000 customers
Typical time to restore 90% 2hours Median across major outages, from the peak
Longest single outage 3.3days Mar 3, 2023, over 1% of customers out
Outage hours on storm days 59% Share falling on days with a NOAA storm report here
Worst year 2023 25 hours without power, average customer
Electricity customers 22,032 ORNL customer model · 6 well-covered years

Every day since 2015

Eleven years, one night at a time

Each cell is a day. The brighter it is, the larger the share of Henry's customers who were without power at that day's worst moment.

20152016201720182019202020212022202320242025
0%100% of customers out

Year by year

Hours in the dark, per customer

2023 was the worst well-recorded year, at 25 hours for the average customer. Hatched years have a thin record and are left out of the averages.

Henry, hours without power per customer

HenryUS median countyTennessee average
0 10 20 30 ’17 ’18 ’19 13 ’20 7.6 ’21 9.5 ’22 25 ’23 10 ’24 8.7 ’25 US 6.6 TN 5.8

The record

The biggest outages since 2015

Ranked by customer-hours lost: customers out multiplied by how long they stayed out. Times are local.

Began Storm Peak out Share Lasted 90% restored Customer-hours
Mar 3, 2023 Windstorm 13,970 63% 3.3 d 2.3 d 342k
May 3, 2020 Thunderstorms 9,930 45% 3.1 d 43 h 166k
May 26, 2024 Thunderstorms 6,251 28% 34 h 26 h 64k
Jul 19, 2023 Flooding 10,954 50% 17 h 8.5 h 43k
Apr 17, 2024 No storm report 2,940 13% 14 h 15 h 40k
Dec 11, 2021 Tornadoes 1,510 7% 2.1 d 2.2 d 38k
Feb 3, 2022 Ice storm 6,290 29% 29 h 1.5 h 31k
Apr 21, 2025 No storm report 6,324 29% 6.0 h 5.5 h 22k
Aug 19, 2025 Heat 2,558 12% 9.2 h 7.0 h 15k
May 28, 2021 No storm report 6,723 31% 2.2 h 30 min 14k
Jun 9, 2022 No storm report 1,792 8% 7.8 h 7.5 h 14k
Apr 24, 2021 No storm report 5,891 27% 2.5 h 1.8 h 13k

After the peak

How fast the lights come back

Each line is one major outage, from its peak. The amber line is the typical path.

0% 25% 50% 75% 100% peak+24h+48h+72h+96h half back by +2h 90% by +10h

When it happens

The outage clock

Customer-hours out by month (rings, January innermost) and local hour, 2018–2025.

00061218 Jan inside

What was happening

Weather behind the outages

Each outage is matched to NOAA storm reports for Henry from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.

  • No storm on record 41%
  • Windstorm 24%
  • Thunderstorms 21%
  • Heat 3.5%
  • Flooding 3.5%
  • Tornadoes 2.9%
  • Ice storm 2.2%
  • Winter storm 0.9%
  • Tropical storm 0.7%

Who keeps the lights on

Utilities serving Henry

As each utility reports to the Energy Information Administration for its whole Tennessee territory, not this county alone. Outage minutes include major storm days.

Utility Type Outage min / yr Excl. major storms Outages / yr Residential ¢/kWh Customers
City of Paris Municipal 488 444 5.13 12.3 16k

EIA Form 861, latest year each utility reported. Outage minutes are SAIDI, the yearly minutes the average customer goes without power; outages a year are SAIFI.

Next door

Neighbouring counties

Across Tennessee

Where it is darkest

Hours / yr64+

All Tennessee counties →

About these numbers

Notes

Outages come from the EAGLE-I record of utility outage maps collected every 15 minutes by Oak Ridge National Laboratory. Hours without power are customer-hours divided by the county's 22,032 electricity customers. Averages use well-covered years from 2018. Outages shorter than 15 minutes, and utilities that publish no outage map, are not in the record, so these figures understate the total. How every number is made →