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

Power outage history

Roscommon County Michigan

29hours

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

13th most of 83 in Michigan 4.4× the national median

Worst outage on record Dec 16, 2021 100% of customers out · 90% back in 47 hours
Hours without power, average customer per year 29h / yr State average 13 h · national median 6.6 h
Major outages a year 9.3 Peaks over 10% of customers or 50,000 customers
Typical time to restore 90% 4hours Median across major outages, from the peak
Longest single outage 3.8days Dec 24, 2015, over 1% of customers out
Outage hours on storm days 46% Share falling on days with a NOAA storm report here
Worst year 2021 2.1 days without power, average customer
Electricity customers 13,780 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 Roscommon'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 2.1 days for the average customer. Hatched years have a thin record and are left out of the averages.

Roscommon, hours without power per customer

RoscommonUS median countyMichigan average
0 20 40 60 53 ’15 7.3 ’16 31 ’17 43 ’18 17 ’19 36 ’20 51 ’21 37 ’22 11 ’23 16 ’24 19 ’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
Dec 16, 2021 Windstorm 13,780 100% 3.1 d 47 h 500k
Aug 28, 2018 Thunderstorms 12,056 87% 3.8 d 2.3 d 432k
Dec 24, 2015 No storm report 9,723 71% 3.8 d 2.9 d 359k
Aug 2, 2015 Thunderstorms 6,020 44% 2.8 d 31 h 224k
Dec 5, 2017 No storm report 13,780 100% 41 h 11 h 177k
Dec 12, 2020 Winter storm 8,114 59% 2.1 d 29 h 138k
Nov 5, 2022 No storm report 3,800 28% 2.3 d 30 h 104k
Oct 12, 2022 Thunderstorms 11,746 85% 17 h 6.5 h 103k
Jun 16, 2022 No storm report 6,503 47% 46 h 31 h 84k
Jun 13, 2017 No storm report 9,576 69% 34 h 15 h 70k
Jul 13, 2018 Thunderstorms 4,174 30% 37 h 28 h 69k
Jul 19, 2020 Thunderstorms 3,157 23% 36 h 28 h 65k

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 +10h 90% by +30h

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

  • No storm on record 54%
  • Thunderstorms 23%
  • Windstorm 17%
  • Winter storm 5.5%

Who keeps the lights on

Utilities serving Roscommon

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
Consumers Energy Co Investor Owned 820 164 1.40 20.7 1.7M

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 13,780 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 →