Preble CountyPower Outage History
What this grade means
Worse than average — more frequent or longer outages than most counties. This county's recorded history shows more frequent outages and/or longer restoration times than most US counties over the same 12-year period. If you live here, it's worth taking backup power more seriously than an average household would.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Jul 11, 2017 | 54 hrs | 12,477 (62%) | Thunderstorm Wind |
| Mar 31, 2022 | 36 hrs | 6,914 (35%) | High Wind |
| Mar 29, 2020 | 2 hrs | 6,257 (31%) | Hail |
| Sep 27, 2024 | 74 hrs | 5,595 (28%) | Hurricane Helene |
| Jul 28, 2021 | 1 hrs | 5,406 (27%) | Unnamed event |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Preble County, Ohio that day.
Over the 12 years from 2014 to 2025, Preble County recorded 625 distinct power outage events, averaging 3.5 hours per event.
The single worst outage on record in Preble County started July 11, 2017 (Thunderstorm Wind), lasting 54 hours and leaving up to 12,477 customers without power (62% of the county) at its peak.
July has historically been the worst month for outages in Preble County, with 80 events recorded during that month across the dataset.
Based on this history, Preble County earns a Reliability Grade of D, placing it in the 37th percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Ohio
Counties with the closest reliability grade and national percentile to Preble County.
| County | Grade | National percentile |
|---|---|---|
| Knox County | D | 37th |
| Clinton County | D | 37th |
| Holmes County | D | 36th |
| Scioto County | D | 38th |
| Trumbull County | D | 36th |
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 Preble County?
Between 2014 and 2025, Preble County recorded 625 outage events, averaging 3.5 hours each.
What is Preble County's reliability grade?
Preble County has a Reliability Grade of D, in the 37th national percentile.
What was the worst power outage in Preble County?
The worst outage on record started July 11, 2017 (Thunderstorm Wind), lasting 54 hours and affecting up to 12,477 customers.