St. Joseph County Power Outage History
2014–2025 · Michigan
Bottom 20% least reliable nationally — frequent and/or long outages. How grades are calculated
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Aug 11, 2021 | 187 hrs | 13,700 (55%) | Thunderstorm Wind |
| Mar 30, 2025 | 117 hrs | 7,034 (28%) | Thunderstorm Wind |
| Nov 1, 2016 | 3 hrs | 6,606 (27%) | Unnamed event |
| May 16, 2025 | 58 hrs | 6,142 (25%) | Thunderstorm Wind |
| Jun 14, 2022 | 74 hrs | 5,776 (23%) | Thunderstorm Wind |
Over the 12 years from 2014 to 2025, St. Joseph County recorded 880 distinct power outage events, averaging 4.4 hours per event.
The single worst outage on record in St. Joseph County started August 11, 2021 (Thunderstorm Wind), lasting 187 hours and leaving up to 13,700 customers without power (55% of the county) at its peak.
July has historically been the worst month for outages in St. Joseph County, with 122 events recorded during that month across the dataset.
Based on this history, St. Joseph County earns a Reliability Grade of F, placing it in the 10th percentile nationally for grid reliability (higher percentile = more reliable).
Sized for St. Joseph County's outage profile
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Similar counties in Michigan
Counties with the closest reliability grade and national percentile to St. Joseph County.
| County | Grade | National percentile |
|---|---|---|
| Charlevoix County | F | 10th |
| Emmet County | F | 10th |
| Jackson County | F | 11th |
| Lenawee County | F | 10th |
| Monroe County | F | 9th |
FAQ
How often does power go out in St. Joseph County?
Between 2014 and 2025, St. Joseph County recorded 880 outage events, averaging 4.4 hours each.
What is St. Joseph County's reliability grade?
St. Joseph County has a Reliability Grade of F, in the 10th national percentile.
What was the worst power outage in St. Joseph County?
The worst outage on record started August 11, 2021 (Thunderstorm Wind), lasting 187 hours and affecting up to 13,700 customers.