Power Out Map
– 0% of Johnson out 0 customers out in Georgia

Power outage history

Johnson County Georgia

35hours

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

7th most of 156 in Georgia 5.3× the national median

Worst outage on record Hurricane Helene · Sep 27, 2024 100% of customers out · 90% back in 8.8 days
Hours without power, average customer per year 35h / yr State average 6.7 h · national median 6.6 h
Major outages a year 5.6 Peaks over 10% of customers or 50,000 customers
Typical time to restore 90% 3hours Median across major outages, from the peak
Longest single outage 16.6days Hurricane Helene, over 1% of customers out
Outage hours on storm days 87% Share falling on days with a NOAA storm report here
Worst year 2024 7.8 days without power, average customer
Electricity customers 4,550 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 Johnson'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

2024 was the worst well-recorded year, at 7.8 days for the average customer. Hatched years have a thin record and are left out of the averages.

Johnson, hours without power per customer

JohnsonUS median countyGeorgia average
0 20 40 60 80 100 120 0.6 ’15 0.9 ’16 8.5 ’17 41 ’18 3.6 ’19 6.2 ’20 8.2 ’21 10 ’22 10 ’23 188 ’24 13 ’25 GA 6.7 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
Sep 27, 2024 Hurricane Helene 4,550 100% 16.6 d 8.8 d 828k
Oct 10, 2018 Hurricane Michael 4,550 100% 2.9 d 2.4 d 167k
Sep 11, 2017 Hurricane Irma 1,575 35% 3.5 d 28 h 34k
Jun 26, 2025 Thunderstorms 3,542 78% 16 h 10 h 29k
Feb 13, 2021 No storm report 830 18% 25 h 18 h 20k
Aug 6, 2023 Thunderstorms 4,550 100% 6.8 h 4.8 h 13k
May 6, 2022 Thunderstorms 1,472 32% 19 h 12 h 7.6k
Apr 6, 2022 Tornadoes 1,956 43% 27 h 6.5 h 7.6k
Jun 17, 2022 Thunderstorms 1,267 28% 13 h 9.2 h 7.0k
Jan 10, 2025 No storm report 888 20% 7.8 h 4.0 h 6.5k
Apr 13, 2020 No storm report 2,396 53% 7.2 h 4.0 h 6.2k
Jan 3, 2022 No storm report 1,149 25% 12 h 5.8 h 5.5k

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

  • Tropical storm 81%
  • No storm on record 13%
  • Thunderstorms 5.6%
  • Tornadoes 0.6%

Who keeps the lights on

Utilities serving Johnson

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

Utility Type Outage min / yr Excl. major storms Outages / yr Residential ¢/kWh Customers
Georgia Power Co Investor Owned 287 155 1.83 16.3 2.5M
Jefferson Electric Member Corp Cooperative 163 143 1.77 14.6 35k
Altamaha Electric Member Corp Cooperative 375 260 2.13 16.3 20k
Washington Elec Member Corp Cooperative 1,789 1,789 – 15.4 15k

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 Georgia

Where it is darkest

Hours / yr64+

All Georgia 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 4,550 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 →