massoutage

2021 Michigan Power Outage Report

In 2021, the average Michigan customer went without power for about 26.6 hours — the 2nd worst of any US state that year, 2.2× the state's decade average. Figures from DOE/ORNL EAGLE-I.

Avg hrs / customer
26.6
Peak customers out
265,444
Rank (worst state)
2nd
Counties affected
20

Michigan outages over the decade

Average hours without power per customer, 2021 highlighted.

6.8h20152.0h20166.0h201710.0h201812.7h20199.8h202026.6h202110.5h202226.5h20238.5h202412.9h2025

Hardest-hit Michigan counties in 2021

By peak customers out during the year's worst event.

1Wayne County265,4442Oakland County159,8713Washtenaw County68,4164Macomb County64,0685Kent County49,0896Livingston County38,5047St. Clair County30,6378Monroe County29,9239Genesee County26,42010Jackson County22,97411Kalamazoo County16,73812Berrien County16,03813Allegan County15,33114Newaygo County14,99115Antrim County14,85116Roscommon County14,56317St. Joseph County13,70018Hillsdale County13,66319Huron County12,46320Branch County12,027

Biggest Michigan outages of 2021

CountyBeganPeak customers out
Wayne CountyAugust 11, 2021265,444
Oakland CountyMay 16, 2021159,871
Wayne CountyNovember 8, 202168,839
Washtenaw CountyAugust 9, 202168,416
Macomb CountyAugust 11, 202164,068
Wayne CountyApril 5, 202150,529
Kent CountyAugust 10, 202149,089
Macomb CountyJune 18, 202147,664
Livingston CountyAugust 7, 202138,504
Oakland CountyDecember 5, 202136,269
Michigan by year:20252024202320222020201920182017
Other states in 2021:LAWVTXORMSKY

Part of the 2021 US Power Outage Report. Source: DOE/ORNL EAGLE-I. “Avg hours per customer” is a SAIDI-like measure (outage customer-minutes ÷ tracked customers); coverage varies by year.