massoutage

2021 Michigan Power Outage Report

In 2021, the average Michigan customer went without power for about 26.6 hours, the 2nd worst of 51 states (US average 8.4 hours). Figures from DOE/ORNL EAGLE-I, including major storm days.

Avg hrs / customer
26.6
vs prior year
▲ 173%
vs 2020
Customer-hours out
128.8M
Peak customers out
873,852
across the state at once
EAGLE-I coverage
95%
of MI customers
Counties reporting
83

Michigan year over year

Michigan: average hours without power per customer by year2015: 6.8h; 2016: 2.0h; 2017: 6.0h; 2018: 9.9h, coverage 91%; 2019: 12.7h, coverage 96%; 2020: 9.7h, coverage 95%; 2021: 26.6h, coverage 95%; 2022: 10.4h, coverage 96%; 2023: 26.5h; 2024: 8.5h; 2025: 12.6h01020300%50%100%6.8h20152.0h20166.0h20179.9h201812.7h20199.7h202026.6h202110.4h202226.5h20238.5h202412.6h2025
Use the arrow keys to read values.
Average hours without power per customer. Line: EAGLE-I coverage, share of customers tracked (right axis).

Month by month, 2021

Customer-hours without power across Michigan; August was the worst.

CSVJSON
Michigan customer-hours without power by month, 2021Jan 638K, Feb 433K, Mar 1.5M, Apr 1.1M, May 1.2M, Jun 8.2M, Jul 14.4M, Aug 64.3M, Sep 15.2M, Oct 2.0M, Nov 1.8M, Dec 18.1M020M40M60M80M638KJan433KFeb1.5MMar1.1MApr1.2MMay8.2MJun14.4MJul64.3MAug15.2MSep2.0MOct1.8MNov18.1MDec
Use the arrow keys to read values.

All 83 Michigan counties, 2021

Ranked by average hours without power per customer. Each county links to its annual report.

CSVJSON
#CountyHrs / customerCustomer-hoursCustomersPeak outEvents
1Cass County149.9513K3,4233,423776
2Alcona County113.7688K6,0506,050341
3Huron County108.81.1M10,54510,545320
4Berrien County92.71.2M12,80512,805829
5Wayne County79.435.1M441,528265,44411
6Ogemaw County77.1901K11,6819,602422
7St. Joseph County67.21.3M19,44013,700655
8Monroe County65.13.1M47,26029,923532
9Sanilac County61.9798K12,8999,280298
10Oscoda County59.9302K5,0444,438290
11Clare County58.71.1M18,06111,895530
12Lake County54.9506K9,2266,444545
13Missaukee County53.9515K9,5596,906316
14Arenac County52.6519K9,8647,295323
15Roscommon County50.7698K13,78013,780460
16Hillsdale County44.41.4M30,91413,663507
17Leelanau County43.9543K12,3578,475411
18Antrim County43.6682K15,64114,851639
19Gladwin County43.5662K15,2017,099440
20Oakland County41.026.5M646,293159,87166
21Branch County40.41.2M30,68712,027424
22Van Buren County39.3743K18,91610,179791
23Montmorency County38.7235K6,0733,842349
24Iosco County38.5551K14,3106,309437
25St. Clair County37.32.7M71,46930,637489
26Mecosta County37.1764K20,6088,976544
27Livingston County36.73.2M88,11338,504497
28Crawford County34.8286K8,2185,233348
29Tuscola County32.1535K16,6396,138459
30Osceola County30.3553K18,2729,451470
31Washtenaw County29.85.8M195,55368,416499
32Newaygo County28.2905K32,05814,991669
33Mackinac County28.1246K8,7574,474447
34Cheboygan County27.3439K16,11810,633455
35Kalkaska County25.7264K10,2795,816486
36Lapeer County24.5941K38,3639,491440
37Benzie County23.8227K9,5454,936416
38Gogebic County23.7175K7,3947,394297
39Lenawee County23.0790K34,3368,137717
40Iron County22.6133K5,8904,599192
41Mason County22.6426K18,90911,073485
42Wexford County22.2478K21,5187,547384
43Montcalm County21.0714K33,9469,757602
44Jackson County20.62.1M101,26022,974797
45Macomb County20.68.3M404,55364,068181
46Manistee County16.9257K15,1775,707414
47Charlevoix County16.7334K19,9838,363529
48Keweenaw County16.422K1,35686492
49Midland County15.4881K57,3506,986626
50Allegan County15.11.3M86,72515,331740
51Ionia County14.3503K35,2424,856592
52Otsego County12.8246K19,1745,722506
53Oceana County12.5222K17,7385,198533
54Kalamazoo County12.41.2M96,41716,738906
55Menominee County11.3136K12,0723,983226
56Calhoun County11.21.0M92,7948,842821
57Schoolcraft County10.056K5,6111,985286
58Isabella County9.6350K36,5076,851517
59Barry County9.5399K41,9526,872624
60Grand Traverse County9.5575K60,52111,881546
61Luce County9.344K4,7461,456188
62Chippewa County9.0295K32,7435,741680
63Genesee County9.02.4M270,24726,420560
64Dickinson County8.198K12,1104,214218
65Muskegon County8.1837K103,71811,093819
66Presque Isle County7.864K8,1981,664301
67Emmet County7.4212K28,7966,522427
68Gratiot County7.3153K21,0042,431395
69Ottawa County7.1854K120,1409,786656
70Kent County6.92.9M416,07749,089692
71Saginaw County5.8775K132,60411,916858
72Bay County4.9321K66,1623,837602
73Clinton County4.8162K34,0285,954566
74Ontonagon County4.720K4,246695158
75Alpena County4.480K18,2361,345191
76Shiawassee County4.1170K41,3615,883514
77Eaton County3.5177K50,3762,347653
78Baraga County3.416K4,824951110
79Ingham County3.3625K187,6986,644793
80Alger County3.315K4,553972180
81Houghton County3.390K27,5794,686514
82Marquette County2.4110K45,2624,021381
83Delta County2.357K24,5192,751350

Biggest Michigan outages of 2021

Up to 25 county outage episodes with the most customers out at once.

CSVJSON
#CountyStarted (UTC)Ended (UTC)DurationPeak outCustomer-hours
1Wayne County, MIAugust 11, 2021 22:15October 21, 2021 01:4570d 3h265,44424.4M
2Oakland County, MIMay 16, 2021 06:45October 21, 2021 01:45157d 19h159,87124.8M
3Wayne County, MINovember 8, 2021 17:00December 31, 2021 00:1552d 7h68,8392.9M
4Washtenaw County, MIAugust 9, 2021 00:00September 4, 2021 09:0026d 9h68,4164.6M
5Macomb County, MIAugust 11, 2021 22:15October 21, 2021 01:4570d 3h64,0685.0M
6Wayne County, MIApril 5, 2021 06:00August 11, 2021 20:45128d 14h50,5297.1M
7Kent County, MIAugust 10, 2021 00:00August 21, 2021 17:0011d 17h49,0891.5M
8Macomb County, MIJune 18, 2021 11:00August 11, 2021 20:4554d 9h47,6642.4M
9Livingston County, MIAugust 7, 2021 13:00August 21, 2021 06:0013d 17h38,5042.1M
10Oakland County, MIDecember 5, 2021 12:00December 27, 2021 04:3021d 16h36,269962K
11St. Clair County, MISeptember 22, 2021 00:15September 29, 2021 05:157d 5h30,6371.4M
12Monroe County, MIAugust 8, 2021 20:00August 19, 2021 11:3010d 15h29,9232.1M
13Genesee County, MIAugust 12, 2021 15:00August 19, 2021 08:456d 17h26,420991K
14Jackson County, MIAugust 12, 2021 03:15August 19, 2021 03:006d 23h22,9741.6M
15Kent County, MIDecember 5, 2021 09:00December 19, 2021 04:3013d 19h22,018612K
16Genesee County, MIAugust 9, 2021 12:00August 11, 2021 22:302d 10h20,40966K
17Macomb County, MIDecember 10, 2021 14:45December 29, 2021 07:3018d 16h17,183499K
18Kalamazoo County, MISeptember 7, 2021 18:00September 10, 2021 00:302d 6h16,738290K
19Monroe County, MIOctober 13, 2021 16:45October 21, 2021 01:457d 9h15,67657K
20Allegan County, MIAugust 10, 2021 18:45August 17, 2021 03:456d 9h15,331745K
21Newaygo County, MIAugust 11, 2021 01:30August 16, 2021 04:005d 2h14,991445K
22Antrim County, MIDecember 16, 2021 06:30December 21, 2021 23:155d 16h14,851498K
23Monroe County, MIDecember 11, 2021 07:45December 21, 2021 14:0010d 6h14,239466K
24Roscommon County, MIDecember 16, 2021 17:30December 20, 2021 04:003d 10h13,780452K
25St. Joseph County, MIAugust 9, 2021 22:45August 19, 2021 08:309d 9h13,7001.0M
EAGLE-I tracked about 95% of Michigan's electricity customers in 2021; outages at utilities it does not see are not counted. Hours per customer divide outage customer-minutes by modeled county customers.
Michigan by year:2025202420232022202020192018201720162015
Other states in 2021:LAWVORTXMSKYNCWA

Part of the 2021 US Power Outage Report.

Data from DOE EAGLE-I, every source we read.