Mason 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 |
|---|---|---|---|
| Nov 12, 2025 | <1 hr | 5,766 (56%) | Unnamed event |
| Apr 9, 2020 | 19 hrs | 3,327 (32%) | Thunderstorm Wind |
| Dec 23, 2022 | 2 hrs | 2,885 (28%) | Winter Storm |
| Jan 11, 2020 | 8 hrs | 2,221 (21%) | Thunderstorm Wind |
| Mar 3, 2023 | 50 hrs | 1,843 (18%) | High Wind |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Mason County, Kentucky that day.
Over the 12 years from 2014 to 2025, Mason County recorded 540 distinct power outage events, averaging 2.4 hours per event.
The single worst outage on record in Mason County started November 12, 2025, lasting less than 1 hour and leaving up to 5,766 customers without power (56% of the county) at its peak.
November has historically been the worst month for outages in Mason County, with 66 events recorded during that month across the dataset.
Based on this history, Mason County earns a Reliability Grade of C, placing it in the 53rd percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Kentucky
Counties with the closest reliability grade and national percentile to Mason County.
| County | Grade | National percentile |
|---|---|---|
| Barren County | C | 53rd |
| Bullitt County | C | 52nd |
| Henry County | C | 54th |
| Harrison County | C | 54th |
| Owen County | C | 52nd |
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 Mason County?
Between 2014 and 2025, Mason County recorded 540 outage events, averaging 2.4 hours each.
What is Mason County's reliability grade?
Mason County has a Reliability Grade of C, in the 53rd national percentile.
What was the worst power outage in Mason County?
The worst outage on record started November 12, 2025, lasting less than 1 hour and affecting up to 5,766 customers.