Power Out Map
– 0% of Dallas out 0 customers out in Alabama

Power outage history

Dallas County Alabama

25hours

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

5th most of 60 in Alabama 3.8× the national median

Worst outage on record Hurricane Zeta · Oct 29, 2020 100% of customers out · 90% back in 6.3 days
Hours without power, average customer per year 25h / yr State average 7.0 h · national median 6.6 h
Major outages a year 3.0 Peaks over 10% of customers or 50,000 customers
Typical time to restore 90% 6hours Median across major outages, from the peak
Longest single outage 8.0days Hurricane Zeta, over 1% of customers out
Outage hours on storm days 82% Share falling on days with a NOAA storm report here
Worst year 2020 4.5 days without power, average customer
Electricity customers 19,358 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 Dallas'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 4.5 days for the average customer. Hatched years have a thin record and are left out of the averages.

Dallas, hours without power per customer

DallasUS median countyAlabama average
0 50 100 150 1.1 ’15 1.6 ’16 4.4 ’17 7.0 ’18 5.8 ’19 109 ’20 10 ’21 6.3 ’22 35 ’23 11 ’24 13 ’25 AL 7.0 US 6.6

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
Oct 28, 2020 Hurricane Zeta 19,358 100% 8.0 d 6.3 d 1.9M
Jan 12, 2023 Tornadoes 15,358 79% 4.2 d 3.3 d 402k
Jun 14, 2023 Thunderstorms 12,345 64% 2.7 d 29 h 131k
Aug 18, 2024 Thunderstorms 12,382 64% 28 h 20 h 104k
Feb 16, 2025 Thunderstorms 6,127 32% 39 h 34 h 81k
May 4, 2021 No storm report 4,201 22% 41 h 26 h 56k
Dec 8, 2017 Winter storm 2,585 13% 2.0 d 17 h 46k
Jun 28, 2018 Thunderstorms 4,456 23% 29 h 24 h 39k
Mar 17, 2021 Tornadoes 2,975 15% 42 h 40 h 35k
Sep 16, 2020 Hurricane Sally 2,022 10% 25 h 24 h 32k
Jan 11, 2020 Thunderstorms 4,754 25% 23 h 3.0 h 30k
Apr 12, 2020 No storm report 3,333 17% 27 h 3.2 h 28k

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 +26h

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

  • Tropical storm 56%
  • No storm on record 18%
  • Tornadoes 13%
  • Thunderstorms 12%

Who keeps the lights on

Utilities serving Dallas

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

Utility Type Outage min / yr Excl. major storms Outages / yr Residential ¢/kWh Customers
Alabama Power Co Investor Owned 410 108 2.06 17.9 1.3M
Pioneer Electric Coop, Inc AL 227 227 2.21 16.4 146k
Central Alabama Electric Coop Cooperative 469 189 – 17.2 46k
Black Warrior Elec Member Corp Cooperative – – – 15.1 20k

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 Alabama

Where it is darkest

Hours / yr64+

All Alabama 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 19,358 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 →