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

Power outage history

Davidson County Tennessee

7.1hours

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

21st most of 73 in Tennessee close to the national median

Worst outage on record May 5, 2020 37% of customers out · 90% back in 35 hours
Hours without power, average customer per year 7.1h / yr State average 5.8 h · national median 6.6 h
Major outages a year 1.3 Peaks over 10% of customers or 50,000 customers
Typical time to restore 90% 22hours Median across major outages, from the peak
Longest single outage 6.8days Mar 3, 2020, over 1% of customers out
Outage hours on storm days 93% Share falling on days with a NOAA storm report here
Worst year 2020 24 hours without power, average customer
Electricity customers 359,052 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 Davidson'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

2020 was the worst well-recorded year, at 24 hours for the average customer. Hatched years have a thin record and are left out of the averages.

Davidson, hours without power per customer

DavidsonUS median countyTennessee average
0 10 20 30 2.5 ’15 2.5 ’16 1.9 ’17 0.2 ’18 3.6 ’19 24 ’20 6.3 ’21 4.4 ’22 11 ’23 2.5 ’24 4.5 ’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
May 4, 2020 Windstorm 132,893 37% 3.3 d 35 h 3.4M
Mar 3, 2020 Tornadoes 49,651 14% 6.8 d 5.7 d 2.7M
Mar 3, 2023 Thunderstorms 104,359 29% 3.4 d 43 h 2.0M
May 3, 2020 Thunderstorms 124,024 35% 13 h 15 h 1.3M
Dec 11, 2021 Tornadoes 83,500 23% 41 h 30 h 1.2M
Jun 30, 2023 Thunderstorms 31,952 9% 42 h 24 h 459k
Apr 5, 2025 Thunderstorms 50,463 14% 27 h 23 h 436k
Dec 23, 2022 Winter storm 61,686 17% 17 h 10 h 370k
Jun 21, 2019 Thunderstorms 38,153 11% 10 h 21 h 217k
May 4, 2020 No storm report 94,768 26% 2.2 h 2.2 h 208k
Dec 9, 2023 Tornadoes 25,871 7% 21 h 22 h 205k
Dec 24, 2022 Winter storm 48,653 14% 11 h 5.8 h 179k

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 +6h 90% by +30h

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

  • Thunderstorms 37%
  • Tornadoes 28%
  • Windstorm 23%
  • No storm on record 7.4%
  • Winter storm 3.8%

Who keeps the lights on

Utilities serving Davidson

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
Nashville Electric Service Municipal 0 83 0.00 14.0 425k

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 359,052 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 →