Highland CountyPower Outage History
What this grade means
Average — typical outage frequency and duration nationally. This county sits in the middle of the national distribution — its outage frequency and duration over the past 12 years are close to the nationwide median, neither notably better nor worse than most other US counties. A typical amount of backup-power preparedness is reasonable here.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Jun 10, 2020 | 28 hrs | 6,874 (25%) | Thunderstorm Wind |
| Jun 6, 2015 | 11 hrs | 5,805 (21%) | Unnamed event |
| Jun 7, 2015 | 1 hrs | 5,804 (21%) | Unnamed event |
| Jun 6, 2015 | 3 hrs | 5,804 (21%) | Unnamed event |
| Apr 6, 2016 | 7 hrs | 4,771 (17%) | High Wind |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Highland County, Ohio that day.
Over the 12 years from 2014 to 2025, Highland County recorded 547 distinct power outage events, averaging 3.0 hours per event.
The single worst outage on record in Highland County started June 10, 2020 (Thunderstorm Wind), lasting 28 hours and leaving up to 6,874 customers without power (25% of the county) at its peak.
June has historically been the worst month for outages in Highland County, with 60 events recorded during that month across the dataset.
Based on this history, Highland County earns a Reliability Grade of C, placing it in the 44th percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Ohio
Counties with the closest reliability grade and national percentile to Highland County.
| County | Grade | National percentile |
|---|---|---|
| Portage County | C | 43rd |
| Morrow County | C | 46th |
| Noble County | C | 41st |
| Washington County | C | 47th |
| Fairfield County | C | 48th |
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 Highland County?
Between 2014 and 2025, Highland County recorded 547 outage events, averaging 3.0 hours each.
What is Highland County's reliability grade?
Highland County has a Reliability Grade of C, in the 44th national percentile.
What was the worst power outage in Highland County?
The worst outage on record started June 10, 2020 (Thunderstorm Wind), lasting 28 hours and affecting up to 6,874 customers.