Allegan 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 29, 2022 | 59 hrs | 15,922 (18%) | Thunderstorm Wind |
| Aug 11, 2021 | 20 hrs | 15,331 (18%) | Thunderstorm Wind |
| Aug 12, 2021 | 85 hrs | 14,053 (16%) | Thunderstorm Wind |
| May 16, 2025 | 96 hrs | 14,042 (16%) | Thunderstorm Wind |
| Jul 20, 2019 | 67 hrs | 12,997 (15%) | Thunderstorm Wind |
Over the 12 years from 2014 to 2025, Allegan County recorded 972 distinct power outage events, averaging 4.5 hours per event.
The single worst outage on record in Allegan County started August 29, 2022 (Thunderstorm Wind), lasting 59 hours and leaving up to 15,922 customers without power (18% of the county) at its peak.
June has historically been the worst month for outages in Allegan County, with 145 events recorded during that month across the dataset.
Based on this history, Allegan County earns a Reliability Grade of D, placing it in the 25th percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Allegan County's outage profile
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Similar counties in Michigan
Counties with the closest reliability grade and national percentile to Allegan County.
| County | Grade | National percentile |
|---|---|---|
| Macomb 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 Allegan County?
Between 2014 and 2025, Allegan County recorded 972 outage events, averaging 4.5 hours each.
What is Allegan County's reliability grade?
Allegan County has a Reliability Grade of D, in the 25th national percentile.
What was the worst power outage in Allegan County?
The worst outage on record started August 29, 2022 (Thunderstorm Wind), lasting 59 hours and affecting up to 15,922 customers.