Macomb County Power Outage History
2014–2025 · Michigan
Worse than average — more frequent or longer outages than most counties. How grades are calculated
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Aug 30, 2022 | 5 hrs | 87,071 (22%) | Thunderstorm Wind |
| Feb 22, 2023 | 188 hrs | 81,946 (20%) | Ice Storm |
| Aug 31, 2022 | 26 hrs | 68,192 (17%) | Thunderstorm Wind |
| Aug 12, 2021 | 4 hrs | 64,068 (16%) | Thunderstorm Wind |
| Aug 12, 2021 | 3 hrs | 61,741 (15%) | Thunderstorm Wind |
Over the 12 years from 2014 to 2025, Macomb County recorded 3,471 distinct power outage events, averaging 3.5 hours per event.
The single worst outage on record in Macomb County started August 30, 2022 (Thunderstorm Wind), lasting 5 hours and leaving up to 87,071 customers without power (22% of the county) at its peak.
July has historically been the worst month for outages in Macomb County, with 486 events recorded during that month across the dataset.
Based on this history, Macomb County earns a Reliability Grade of D, placing it in the 25th percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Macomb County's outage profile
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Similar counties in Michigan
Counties with the closest reliability grade and national percentile to Macomb County.
| County | Grade | National percentile |
|---|---|---|
| Allegan County | D | 25th |
| Montmorency County | D | 24th |
| Gogebic County | D | 23rd |
| Midland County | D | 23rd |
| Wexford County | D | 22nd |
FAQ
How often does power go out in Macomb County?
Between 2014 and 2025, Macomb County recorded 3,471 outage events, averaging 3.5 hours each.
What is Macomb County's reliability grade?
Macomb County has a Reliability Grade of D, in the 25th national percentile.
What was the worst power outage in Macomb County?
The worst outage on record started August 30, 2022 (Thunderstorm Wind), lasting 5 hours and affecting up to 87,071 customers.