Power Out Map
– 0% of Iron out 0 customers out in Wisconsin

Power outage history

Iron County Wisconsin

23hours

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

3rd most of 72 in Wisconsin 3.5× the national median

Worst outage on record Nov 26, 2025 86% of customers out · 90% back in 3.1 days
Hours without power, average customer per year 23h / yr State average 3.5 h · national median 6.6 h
Major outages a year 9.4 Peaks over 10% of customers or 50,000 customers
Typical time to restore 90% 2hours Median across major outages, from the peak
Longest single outage 4.5days Nov 26, 2025, over 1% of customers out
Outage hours on storm days 60% Share falling on days with a NOAA storm report here
Worst year 2025 2.7 days without power, average customer
Electricity customers 2,123 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 Iron'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

2025 was the worst well-recorded year, at 2.7 days for the average customer. Hatched years have a thin record and are left out of the averages.

Iron, hours without power per customer

IronUS median countyWisconsin average
0 20 40 60 80 4.0 ’15 11 ’16 13 ’17 17 ’18 38 ’19 5.8 ’20 18 ’21 15 ’22 13 ’23 13 ’24 64 ’25 US 6.6 WI 3.5

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
Nov 26, 2025 Winter storm 1,833 86% 4.5 d 3.1 d 108k
Nov 27, 2019 Winter storm 2,123 100% 2.6 d 30 h 48k
Jul 26, 2021 Thunderstorms 1,136 54% 37 h 13 h 21k
Jun 17, 2018 Thunderstorms 1,376 65% 29 h 18 h 19k
Jul 27, 2023 No storm report 1,530 72% 22 h 12 h 11k
Jun 21, 2025 Thunderstorms 1,027 48% 29 h 12 h 11k
May 22, 2019 No storm report 1,261 59% 20 h 7.0 h 10k
Jul 13, 2024 No storm report 2,064 97% 8.8 h 4.5 h 9.9k
Dec 16, 2021 No storm report 795 37% 31 h 24 h 9.1k
Apr 26, 2017 No storm report 1,012 48% 39 h 8.5 h 8.8k
Jun 25, 2016 No storm report 392 18% 20 h 8.0 h 7.2k
Jul 21, 2016 Thunderstorms 632 30% 32 h 24 h 6.2k

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 +14h

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

  • Winter storm 43%
  • No storm on record 40%
  • Thunderstorms 16%

Who keeps the lights on

Utilities serving Iron

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

Utility Type Outage min / yr Excl. major storms Outages / yr Residential ¢/kWh Customers
Wisconsin Public Service Corp Investor Owned 630 107 1.44 17.2 416k
Northern States Power Co Investor Owned 309 110 1.15 15.6 223k
Bayfield Electric Coop, Inc WI – – – 18.6 70k
Price Electric Coop Inc WI 404 404 2.48 20.2 56k

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 Wisconsin

Where it is darkest

Hours / yr64+

All Wisconsin 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 2,123 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 →