Oakland CountyPower Outage History
What this grade means
Bottom 20% least reliable nationally — frequent and/or long outages. This county ranks in the least reliable fifth of all US counties in our dataset: some combination of frequent outages, long restoration times, or customers affected puts it near the bottom nationally. Backup power is worth prioritizing here rather than treating it as optional.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Aug 12, 2021 | 102 hrs | 159,871 (25%) | Thunderstorm Wind |
| Feb 12, 2020 | <1 hr | 156,519 (24%) | Unnamed event |
| Aug 12, 2021 | 3 hrs | 152,205 (24%) | Thunderstorm Wind |
| Aug 30, 2022 | 6 hrs | 143,689 (22%) | Thunderstorm Wind |
| Feb 22, 2023 | 370 hrs | 142,457 (22%) | Ice Storm |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Oakland County, Michigan that day.
Over the 12 years from 2014 to 2025, Oakland County recorded 5,455 distinct power outage events, averaging 4.0 hours per event.
The single worst outage on record in Oakland County started August 12, 2021 (Thunderstorm Wind), lasting 102 hours and leaving up to 159,871 customers without power (25% of the county) at its peak.
June has historically been the worst month for outages in Oakland County, with 663 events recorded during that month across the dataset.
Based on this history, Oakland County earns a Reliability Grade of F, placing it in the 11th percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Michigan
Counties with the closest reliability grade and national percentile to Oakland County.
| County | Grade | National percentile |
|---|---|---|
| Washtenaw County | F | 11th |
| Berrien County | F | 11th |
| Jackson County | F | 11th |
| Ionia County | F | 12th |
| Charlevoix County | F | 10th |
Most reliable counties nationally
The top 3 counties nationally by reliability grade and percentile.
| County | State | Grade | National percentile |
|---|---|---|---|
| Clay County | South Dakota | A | 100th |
| Clearwater County | Minnesota | A | 99th |
| Limestone County | Alabama | A | 99th |
Least reliable counties nationally
The bottom 3 counties nationally by reliability grade and percentile.
| County | State | Grade | National percentile |
|---|---|---|---|
| Clay County | West Virginia | F | 0th |
| Lincoln County | West Virginia | F | 0th |
| Cameron Parish | Louisiana | F | 0th |
FAQ
How often does power go out in Oakland County?
Between 2014 and 2025, Oakland County recorded 5,455 outage events, averaging 4.0 hours each.
What is Oakland County's reliability grade?
Oakland County has a Reliability Grade of F, in the 11th national percentile.
What was the worst power outage in Oakland County?
The worst outage on record started August 12, 2021 (Thunderstorm Wind), lasting 102 hours and affecting up to 159,871 customers.