Warren 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 |
|---|---|---|---|
| Jun 13, 2022 | 51 hrs | 32,564 (28%) | Thunderstorm Wind |
| Aug 11, 2017 | <1 hr | 26,571 (23%) | Unnamed event |
| Sep 27, 2024 | 80 hrs | 20,993 (18%) | Hurricane Helene |
| Aug 30, 2015 | 3 hrs | 17,341 (15%) | Unnamed event |
| Jun 23, 2016 | 23 hrs | 16,808 (15%) | Thunderstorm Wind |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Warren County, Ohio that day.
Over the 12 years from 2014 to 2025, Warren County recorded 1,026 distinct power outage events, averaging 2.7 hours per event.
The single worst outage on record in Warren County started June 13, 2022 (Thunderstorm Wind), lasting 51 hours and leaving up to 32,564 customers without power (28% of the county) at its peak.
July has historically been the worst month for outages in Warren County, with 138 events recorded during that month across the dataset.
Based on this history, Warren County earns a Reliability Grade of B, placing it in the 62nd percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Ohio
Counties with the closest reliability grade and national percentile to Warren County.
| County | Grade | National percentile |
|---|---|---|
| Wayne County | B | 62nd |
| Darke County | B | 61st |
| Licking County | B | 63rd |
| Mahoning County | B | 63rd |
| Montgomery County | C | 60th |
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 Warren County?
Between 2014 and 2025, Warren County recorded 1,026 outage events, averaging 2.7 hours each.
What is Warren County's reliability grade?
Warren County has a Reliability Grade of B, in the 62nd national percentile.
What was the worst power outage in Warren County?
The worst outage on record started June 13, 2022 (Thunderstorm Wind), lasting 51 hours and affecting up to 32,564 customers.