Power Out Map
– 0% of St. Croix out 0 customers out in Wisconsin

Power outage history

St. Croix County Wisconsin

4.2hours

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

23rd most of 72 in Wisconsin 36% below the national median

Worst outage on record Sep 17, 2021 42% of customers out · 90% back in 26 hours
Hours without power, average customer per year 4.2h / yr State average 3.5 h · national median 6.6 h
Major outages a year 2.5 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 44hours Jul 28, 2025, over 1% of customers out
Outage hours on storm days 65% Share falling on days with a NOAA storm report here
Worst year 2023 8.9 hours without power, average customer
Electricity customers 31,550 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 St. Croix'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

2023 was the worst well-recorded year, at 8.9 hours for the average customer. Hatched years have a thin record and are left out of the averages.

St. Croix, hours without power per customer

St. CroixUS median countyWisconsin average
0 2 4 6 8 10 ’15 3.2 ’17 1.6 ’18 2.9 ’19 1.7 ’20 7.0 ’21 2.5 ’22 8.9 ’23 2.8 ’24 6.3 ’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
Sep 17, 2021 Thunderstorms 13,380 42% 34 h 26 h 153k
Jul 28, 2025 Thunderstorms 12,121 38% 44 h 22 h 150k
Jul 24, 2023 Thunderstorms 11,302 36% 31 h 21 h 86k
Apr 1, 2023 Winter storm 6,288 20% 30 h 16 h 65k
Jul 12, 2017 Thunderstorms 4,106 13% 18 h 16 h 36k
Jul 19, 2023 Thunderstorms 8,340 26% 7.8 h 3.8 h 28k
Aug 27, 2024 Thunderstorms 4,040 13% 14 h 8.2 h 24k
Jun 11, 2019 No storm report 6,398 20% 7.8 h 7.0 h 15k
Jul 3, 2023 Thunderstorms 5,178 16% 5.0 h 1.8 h 14k
Mar 21, 2021 No storm report 4,725 15% 8.8 h 8.0 h 14k
Apr 14, 2022 No storm report 5,108 16% 5.0 h 4.2 h 13k
Jun 19, 2019 No storm report 6,625 21% 2.0 h 2.0 h 13k

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 +8h

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

  • Thunderstorms 55%
  • No storm on record 35%
  • Winter storm 9.8%

Who keeps the lights on

Utilities serving St. Croix

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
Northern States Power Co Investor Owned 309 110 1.15 15.6 223k
St Croix Electric Coop WI 146 107 1.18 12.2 147k
Pierce-Pepin Coop Services WI 100 100 0.98 14.5 106k
Polk-Burnett Electric Coop Cooperative 104 44 1.47 16.0 21k
Dunn County Electric Coop Cooperative 129 32 0.76 16.2 9.5k
City of River Falls Municipal 38 38 0.43 14.0 6.9k
City of New Richmond Municipal 13 13 0.10 12.4 5.1k

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 31,550 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 →