Genesee County Power Outage History
2014–2025 · Michigan
Average — typical outage frequency and duration nationally. How grades are calculated
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Aug 12, 2021 | 5 hrs | 26,420 (10%) | Thunderstorm Wind |
| Aug 12, 2021 | 1 hrs | 25,859 (10%) | Thunderstorm Wind |
| Aug 12, 2021 | 90 hrs | 25,854 (10%) | Thunderstorm Wind |
| Mar 30, 2025 | 119 hrs | 24,417 (9%) | Thunderstorm Wind |
| May 15, 2025 | 7 hrs | 22,767 (8%) | Hail |
Over the 12 years from 2014 to 2025, Genesee County recorded 1,769 distinct power outage events, averaging 4.5 hours per event.
The single worst outage on record in Genesee County started August 12, 2021 (Thunderstorm Wind), lasting 5 hours and leaving up to 26,420 customers without power (10% of the county) at its peak.
July has historically been the worst month for outages in Genesee County, with 235 events recorded during that month across the dataset.
Based on this history, Genesee County earns a Reliability Grade of C, placing it in the 43rd percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Genesee County's outage profile
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Similar counties in Michigan
Counties with the closest reliability grade and national percentile to Genesee County.
| County | Grade | National percentile |
|---|---|---|
| Ottawa County | C | 43rd |
| Tuscola County | C | 43rd |
| Dickinson County | C | 42nd |
| Clinton County | C | 46th |
| Ontonagon County | C | 47th |
FAQ
How often does power go out in Genesee County?
Between 2014 and 2025, Genesee County recorded 1,769 outage events, averaging 4.5 hours each.
What is Genesee County's reliability grade?
Genesee County has a Reliability Grade of C, in the 43rd national percentile.
What was the worst power outage in Genesee County?
The worst outage on record started August 12, 2021 (Thunderstorm Wind), lasting 5 hours and affecting up to 26,420 customers.