Miami CountyPower Outage History
What this grade means
Better than average — fewer or shorter outages than most counties. This county's outage history is better than the national median: recorded outages are less frequent and/or shorter in duration than a typical US county experienced over the same 12-year period. It isn't in the top tier nationally, but its track record points to lower-than-average outage risk.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Jul 2, 2023 | 3 hrs | 15,216 (34%) | Thunderstorm Wind |
| Feb 17, 2021 | 10 hrs | 8,874 (20%) | Winter Weather |
| May 28, 2019 | 9 hrs | 7,686 (17%) | Thunderstorm Wind |
| Apr 2, 2016 | 6 hrs | 6,714 (15%) | Thunderstorm Wind |
| Dec 19, 2014 | 1 hrs | 6,544 (15%) | Unnamed event |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Miami County, Ohio that day.
Over the 12 years from 2014 to 2025, Miami County recorded 462 distinct power outage events, averaging 2.6 hours per event.
The single worst outage on record in Miami County started July 2, 2023 (Thunderstorm Wind), lasting 3 hours and leaving up to 15,216 customers without power (34% of the county) at its peak.
July has historically been the worst month for outages in Miami County, with 77 events recorded during that month across the dataset.
Based on this history, Miami County earns a Reliability Grade of B, placing it in the 74th percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Ohio
Counties with the closest reliability grade and national percentile to Miami County.
| County | Grade | National percentile |
|---|---|---|
| Lucas County | B | 74th |
| Madison County | B | 74th |
| Henry County | B | 73rd |
| Wyandot County | B | 76th |
| Medina County | B | 72nd |
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 Miami County?
Between 2014 and 2025, Miami County recorded 462 outage events, averaging 2.6 hours each.
What is Miami County's reliability grade?
Miami County has a Reliability Grade of B, in the 74th national percentile.
What was the worst power outage in Miami County?
The worst outage on record started July 2, 2023 (Thunderstorm Wind), lasting 3 hours and affecting up to 15,216 customers.