Knox County Power Outage History
2014–2025 · Ohio
Worse than average — more frequent or longer outages than most counties. How grades are calculated
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Jul 5, 2023 | 9 hrs | 22,269 (54%) | Unnamed event |
| Jun 14, 2022 | 140 hrs | 21,067 (51%) | Thunderstorm Wind |
| Sep 11, 2020 | 0 hrs | 7,472 (18%) | Thunderstorm Wind |
| Sep 11, 2020 | 0 hrs | 7,472 (18%) | Thunderstorm Wind |
| Sep 11, 2020 | 0 hrs | 7,472 (18%) | Thunderstorm Wind |
Over the 12 years from 2014 to 2025, Knox County recorded 521 distinct power outage events, averaging 3.1 hours per event.
The single worst outage on record in Knox County started July 5, 2023, lasting 9 hours and leaving up to 22,269 customers without power (54% of the county) at its peak.
June has historically been the worst month for outages in Knox County, with 65 events recorded during that month across the dataset.
Based on this history, Knox County earns a Reliability Grade of D, placing it in the 37th percentile nationally for grid reliability (higher percentile = more reliable).
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Similar counties in Ohio
Counties with the closest reliability grade and national percentile to Knox County.
| County | Grade | National percentile |
|---|---|---|
| Clinton County | D | 37th |
| Holmes County | D | 36th |
| Preble County | D | 37th |
| Trumbull County | D | 36th |
| Scioto County | D | 38th |
FAQ
How often does power go out in Knox County?
Between 2014 and 2025, Knox County recorded 521 outage events, averaging 3.1 hours each.
What is Knox County's reliability grade?
Knox County has a Reliability Grade of D, in the 37th national percentile.
What was the worst power outage in Knox County?
The worst outage on record started July 5, 2023, lasting 9 hours and affecting up to 22,269 customers.