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

Power outage history

Bradley County Tennessee

6.9hours

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

22nd most of 73 in Tennessee close to the national median

Worst outage on record Apr 13, 2020 26% of customers out · 90% back in 22 hours
Hours without power, average customer per year 6.9h / yr State average 5.8 h · national median 6.6 h
Major outages a year 1.9 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 4.9days Jan 12, 2022, over 1% of customers out
Outage hours on storm days 27% Share falling on days with a NOAA storm report here
Worst year 2022 11 hours without power, average customer
Electricity customers 54,499 ORNL customer model · 7 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 Bradley'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

2022 was the worst well-recorded year, at 11 hours for the average customer. Hatched years have a thin record and are left out of the averages.

Bradley, hours without power per customer

BradleyUS median countyTennessee average
0 5 10 15 2.1 ’19 7.0 ’20 7.2 ’21 11 ’22 5.0 ’23 9.8 ’24 6.7 ’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
Apr 12, 2020 Tornadoes 13,967 26% 37 h 22 h 140k
Dec 24, 2022 No storm report 9,413 17% 27 h 30 min 119k
May 9, 2024 Thunderstorms 10,880 20% 31 h 18 h 100k
Jan 12, 2022 No storm report 2,145 4% 4.9 d – 90k
Jun 29, 2022 No storm report 3,210 6% 25 h 30 min 72k
Jul 30, 2024 Thunderstorms 6,322 12% 22 h 16 h 60k
Mar 3, 2023 Windstorm 3,179 6% 43 h 1.0 h 60k
Dec 23, 2024 No storm report 2,182 4% 22 h – 48k
Apr 7, 2025 No storm report 2,243 4% 21 h – 46k
May 5, 2021 No storm report 3,844 7% 18 h 8.8 h 43k
Jun 9, 2022 No storm report 2,379 4% 18 h – 43k
Mar 4, 2025 Windstorm 7,909 15% 16 h 9.8 h 41k

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 +4h 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 Bradley from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.

  • No storm on record 74%
  • Thunderstorms 14%
  • Tornadoes 6.5%
  • Windstorm 4.7%
  • Tropical storm 0.8%

Who keeps the lights on

Utilities serving Bradley

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 Chattanooga Municipal 194 72 1.36 12.9 165k
Volunteer Electric Coop Cooperative 685 436 5.80 13.1 105k
City of Cleveland Municipal 57 36 0.88 13.3 30k

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 54,499 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 →