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

Power outage history

Cannon County Tennessee

2.5hours

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

58th most of 73 in Tennessee 62% below the national median

Worst outage on record Feb 15, 2021 21% of customers out · 90% back in 23 hours
Hours without power, average customer per year 2.5h / yr State average 5.8 h · national median 6.6 h
Major outages a year 2.9 Peaks over 10% of customers or 50,000 customers
Typical time to restore 90% 1hours Median across major outages, from the peak
Longest single outage 29hours Feb 15, 2021, over 1% of customers out
Outage hours on storm days 61% Share falling on days with a NOAA storm report here
Worst year 2021 4.8 hours without power, average customer
Electricity customers 5,893 ORNL customer model · 8 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 Cannon'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

2021 was the worst well-recorded year, at 4.8 hours for the average customer. Hatched years have a thin record and are left out of the averages.

Cannon, hours without power per customer

CannonUS median countyTennessee average
0 2 4 6 8 4.0 ’15 1.2 ’16 2.0 ’17 1.7 ’18 1.1 ’19 3.5 ’20 4.8 ’21 3.9 ’22 2.0 ’23 1.4 ’24 1.5 ’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
Feb 15, 2021 Winter storm 1,211 21% 29 h 23 h 14k
Jun 4, 2015 No storm report 5,893 100% 3.0 h 9.2 h 12k
Jan 2, 2022 Winter storm 981 17% 21 h 6.2 h 11k
Mar 29, 2020 Thunderstorms 2,735 46% 14 h 4.0 h 8.6k
Jun 26, 2015 No storm report 1,963 33% 3.5 h 3.5 h 6.9k
Feb 18, 2021 Winter storm 1,809 31% 18 h 30 min 4.7k
Jun 5, 2017 No storm report 1,653 28% 2.2 h 11 h 3.7k
Mar 21, 2017 Thunderstorms 2,079 35% 6.0 h 1.2 h 3.6k
Apr 1, 2023 Tornadoes 490 8% 15 h 13 h 3.4k
May 8, 2024 Thunderstorms 585 10% 20 h 6.2 h 3.1k
Jul 20, 2023 Thunderstorms 953 16% 4.8 h 4.0 h 2.6k
Apr 18, 2022 No storm report 2,049 35% 1.2 h 1.5 h 2.6k

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 +4h

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 Cannon from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.

  • No storm on record 39%
  • Winter storm 33%
  • Thunderstorms 20%
  • Tornadoes 3.8%
  • Tropical storm 2.7%
  • Flooding 0.7%

Who keeps the lights on

Utilities serving Cannon

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
Middle Tennessee E M C Cooperative 50 48 0.93 12.5 312k
Caney Fork Electric Coop, Inc Cooperative 322 322 2.66 13.6 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 5,893 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 →