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

Power outage history

Johnson County Kentucky

21hours

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

15th most of 119 in Kentucky 3.2× the national median

Worst outage on record Feb 16, 2021 78% of customers out · 90% back in 7.4 days
Hours without power, average customer per year 21h / yr State average 7.7 h · national median 6.6 h
Major outages a year 2.4 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 12.0days Feb 15, 2021, over 1% of customers out
Outage hours on storm days 71% Share falling on days with a NOAA storm report here
Worst year 2021 2.9 days without power, average customer
Electricity customers 12,834 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

2021 was the worst well-recorded year, at 2.9 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 countyKentucky average
0 20 40 60 80 5.8 ’15 3.6 ’16 2.5 ’17 5.2 ’18 5.4 ’19 14 ’20 69 ’21 22 ’22 12 ’23 9.1 ’24 29 ’25 KY 7.7 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
Feb 15, 2021 Ice storm 10,000 78% 12.0 d 7.4 d 771k
Jan 5, 2025 Winter storm 5,172 40% 3.6 d 2.7 d 200k
Jun 17, 2022 Thunderstorms 5,379 42% 3.2 d 2.7 d 140k
Mar 3, 2023 Windstorm 2,388 19% 45 h 30 h 37k
Apr 13, 2020 Windstorm 2,233 17% 40 h 26 h 34k
Sep 27, 2024 Hurricane Helene 1,469 11% 2.6 d 46 h 34k
Jun 21, 2025 No storm report 2,020 16% 35 h 34 h 32k
Jul 16, 2020 No storm report 446 3% 3.8 d – 31k
May 16, 2025 No storm report 3,501 27% 23 h 17 h 29k
Aug 11, 2023 No storm report 448 3% 2.6 d – 27k
Jul 14, 2015 Thunderstorms 1,017 8% 45 h 42 h 26k
Feb 28, 2021 Flooding 1,715 13% 17 h 3.0 h 23k

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 +40h

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.

  • Ice storm 41%
  • No storm on record 29%
  • Winter storm 12%
  • Thunderstorms 9.2%
  • Windstorm 4.8%
  • Tropical storm 1.9%
  • Flooding 1.8%

Who keeps the lights on

Utilities serving Johnson

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

Utility Type Outage min / yr Excl. major storms Outages / yr Residential ¢/kWh Customers
Kentucky Power Co Investor Owned 911 376 2.62 15.9 130k
Big Sandy Rural Elec Coop Corp Cooperative 1,898 1,138 5.82 14.8 12k

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 Kentucky

Where it is darkest

Hours / yr64+

All Kentucky 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 12,834 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 →