Power Out Map
– 0% of Mackinac out 0 customers out in Michigan

Power outage history

Mackinac County Michigan

30hours

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

10th most of 83 in Michigan 4.6× the national median

Worst outage on record Mar 31, 2025 87% of customers out · 90% back in 2.1 days
Hours without power, average customer per year 30h / yr State average 13 h · national median 6.6 h
Major outages a year 6.8 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 24.6days Mar 29, 2025, over 1% of customers out
Outage hours on storm days 57% Share falling on days with a NOAA storm report here
Worst year 2025 3.5 days without power, average customer
Electricity customers 8,757 ORNL customer model · 6 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 Mackinac'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 3.5 days for the average customer. Hatched years have a thin record and are left out of the averages.

Mackinac, hours without power per customer

MackinacUS median countyMichigan average
0 20 40 60 80 100 ’19 20 ’20 28 ’21 16 ’22 14 ’23 18 ’24 83 ’25 MI 13 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
Mar 29, 2025 Ice storm 7,585 87% 24.6 d 2.1 d 536k
Dec 16, 2021 Windstorm 4,474 51% 3.8 d 30 h 117k
Dec 31, 2019 No storm report 2,372 27% 5.6 d 3.1 d 91k
Nov 5, 2022 No storm report 3,480 40% 46 h 48 min 54k
Apr 5, 2023 Ice storm 3,075 35% 14.5 d 1.5 h 50k
Dec 29, 2025 Winter storm 2,057 23% 2.5 d 27 h 24k
Apr 2, 2024 No storm report 625 7% 2.7 d 2.4 d 20k
Dec 30, 2019 Winter storm 2,661 30% 15 h – 19k
Aug 11, 2021 No storm report 2,013 23% 44 h 41 h 18k
Nov 11, 2021 No storm report 2,823 32% 31 h 6.5 h 18k
Dec 20, 2025 No storm report 723 8% 39 h 2.1 d 15k
Dec 11, 2021 No storm report 1,018 12% 30 h 24 h 14k

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 +32h

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

  • Ice storm 44%
  • No storm on record 43%
  • Windstorm 8.7%
  • Winter storm 4.4%

Who keeps the lights on

Utilities serving Mackinac

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

Utility Type Outage min / yr Excl. major storms Outages / yr Residential ¢/kWh Customers
Cloverland Electric Co-op Cooperative 1,020 357 4.41 14.3 36k
Presque Isle Elec & Gas Coop Cooperative 9,074 307 2.91 23.9 33k

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 Michigan

Where it is darkest

Hours / yr64+

All Michigan 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 8,757 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 →