– 0% of Macomb out 0 customers out in Michigan

Power outage history

Macomb County Michigan

9.2hours

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

61st most of 83 in Michigan 1.4× the national median

Worst outage on record Feb 23, 2023 20% of customers out · 90% back in 3.0 days

Hours without power, average customer per year 9.2h / yr State average 13 h · national median 6.6 h

Major outages a year 0.6 Peaks over 10% of customers or 50,000 customers

Typical time to restore 90% 46hours Median across major outages, from the peak

Longest single outage 4.9days Aug 11, 2021, over 1% of customers out

Outage hours on storm days 80% Share falling on days with a NOAA storm report here

Worst year 2021 20 hours without power, average customer

Electricity customers 404,553 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 Macomb'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 20 hours for the average customer. Hatched years have a thin record and are left out of the averages.

Macomb, hours without power per customer

MacombUS median countyMichigan average

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
Feb 22, 2023	Ice storm	81,946	20%	4.1 d	3.0 d	3.5M
Aug 11, 2021	Thunderstorms	64,068	16%	4.9 d	3.4 d	2.9M
Jul 20, 2019	Thunderstorms	32,342	8%	3.1 d	2.4 d	1.3M
Aug 31, 2022	No storm report	68,192	17%	2.2 d	46 h	1.2M
Jul 6, 2021	Thunderstorms	47,664	12%	2.8 d	34 h	1.1M
Mar 3, 2023	Winter storm	37,841	9%	2.5 d	45 h	1.1M
Aug 27, 2024	Thunderstorms	42,868	11%	2.1 d	45 h	1.0M
Sep 22, 2021	No storm report	29,429	7%	2.2 d	2.3 d	1.0M
May 4, 2018	Windstorm	36,614	9%	33 h	27 h	632k
Nov 15, 2020	Windstorm	25,201	6%	29 h	35 h	466k
Aug 9, 2021	Thunderstorms	24,616	6%	33 h	41 h	401k
Jun 25, 2023	Thunderstorms	17,206	4%	41 h	29 h	384k
Dec 11, 2021	Windstorm	17,183	4%	36 h	45 h	357k
Aug 24, 2021	Thunderstorms	14,378	4%	42 h	40 h	343k
Jan 12, 2024	No storm report	16,066	4%	27 h	26 h	332k
Feb 19, 2016	Windstorm	22,021	5%	23 h	14 h	326k
May 26, 2020	No storm report	37,021	9%	13 h	8.0 h	292k
Jul 20, 2023	Thunderstorms	12,375	3%	29 h	35 h	286k
Aug 25, 2023	Thunderstorms	15,495	4%	22 h	17 h	243k
Apr 15, 2018	Winter storm	14,360	4%	28 h	35 h	233k
Jun 19, 2024	Thunderstorms	12,610	3%	23 h	20 h	224k
Jun 27, 2015	No storm report	9,704	2%	27 h	32 h	190k
Sep 7, 2021	Windstorm	11,017	3%	23 h	32 h	189k
Jul 26, 2023	Thunderstorms	9,169	2%	30 h	17 h	176k
Jul 11, 2023	Thunderstorms	10,374	3%	21 h	18 h	143k
Mar 31, 2022	Windstorm	19,658	5%	11 h	10 h	136k
Jul 7, 2017	Thunderstorms	11,227	3%	18 h	26 h	134k
May 7, 2024	Thunderstorms	5,363	1%	23 h	15 h	110k
Mar 25, 2023	No storm report	20,008	5%	11 h	17 h	95k
Jun 21, 2021	No storm report	11,747	3%	12 h	13 h	93k

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.

When it happens

The outage clock

Customer-hours out by month (rings, January innermost) and local hour, 2018–2025.

What was happening

Weather behind the outages

Each outage is matched to NOAA storm reports for Macomb from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.

Thunderstorms 45%
No storm on record 20%
Ice storm 18%
Windstorm 9.0%
Winter storm 6.9%
Flooding 1.6%
Tornadoes 0.5%

Who keeps the lights on

Utilities serving Macomb

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
DTE Electric Company	Investor Owned	192	151	1.16	20.3	2.1M

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

Wayne 21 h
Oakland 16 h
Lapeer 14 h
St. Clair 13 h
Macomb (this county) 9.2 h

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 404,553 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 →