– 0% of Madison out 0 customers out in Florida

Power outage history

Madison County Florida

43hours

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

1st most of 67 in Florida 6.5× the national median

Worst outage on record Hurricane Helene · Sep 26, 2024 100% of customers out · 90% back in 6.5 days
Hours without power, average customer per year 43h / yr State average 7.8 h · national median 6.6 h
Major outages a year 6.4 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 8.9days Hurricane Helene, over 1% of customers out
Outage hours on storm days 95% Share falling on days with a NOAA storm report here
Worst year 2024 7.7 days without power, average customer
Electricity customers 9,415 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 Madison'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 7.7 days for the average customer. Hatched years have a thin record and are left out of the averages.

Madison, hours without power per customer

MadisonUS median countyFlorida average
0 50 100 150 200 250 4.4 ’15 35 ’16 57 ’17 5.9 ’18 2.5 ’19 6.0 ’20 4.8 ’21 5.3 ’22 130 ’23 185 ’24 4.5 ’25 FL 7.8 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 26, 2024 Hurricane Helene 9,415 100% 8.9 d 6.5 d 1.2M
Aug 30, 2023 Hurricane Idalia 9,415 100% 8.4 d 7.4 d 1.2M
Sep 10, 2017 Hurricane Irma 8,088 86% 4.8 d 3.3 d 486k
Aug 5, 2024 Hurricane Debby 9,415 100% 3.7 d 2.5 d 436k
Sep 1, 2016 Hurricane Hermine 8,146 87% 4.7 d 2.6 d 297k
May 10, 2024 Thunderstorms 4,947 53% 2.2 d 32 h 59k
Jan 9, 2024 Thunderstorms 4,022 43% 32 h 20 h 35k
Oct 10, 2018 Hurricane Michael 2,501 27% 30 h 23 h 28k
Jan 22, 2017 Thunderstorms 3,721 40% 22 h 11 h 21k
Feb 6, 2020 No storm report 2,129 23% 29 h 6.8 h 12k
Jun 22, 2015 Thunderstorms 5,403 57% 11 h 3.8 h 11k
Jul 7, 2021 Hurricane Elsa 1,852 20% 16 h 9.8 h 9.1k

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 +8h 90% by +24h

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

  • Tropical storm 89%
  • No storm on record 5.3%
  • Thunderstorms 4.7%

Who keeps the lights on

Utilities serving Madison

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

Utility Type Outage min / yr Excl. major storms Outages / yr Residential ¢/kWh Customers
Duke Energy Florida, LLC Investor Owned 87 82 0.97 18.4 1.8M
Tri-County Electric Coop, Inc (FL) Cooperative 230 230 2.40 18.4 18k

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 Florida

Where it is darkest

Hours / yr64+

All Florida 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 9,415 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 →