Marshall 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 |
|---|---|---|---|
| May 17, 2025 | 38 hrs | 11,045 (50%) | Hail |
| Mar 6, 2017 | 1 hrs | 9,053 (41%) | High Wind |
| Mar 3, 2023 | 46 hrs | 8,921 (40%) | Strong Wind |
| Aug 14, 2021 | 5 hrs | 6,116 (27%) | Heat |
| Aug 9, 2021 | 6 hrs | 6,112 (27%) | Heat |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Marshall County, Kentucky that day.
Over the 9 years from 2017 to 2025, Marshall County recorded 399 distinct power outage events, averaging 2.4 hours per event.
The single worst outage on record in Marshall County started May 17, 2025 (Hail), lasting 38 hours and leaving up to 11,045 customers without power (50% of the county) at its peak.
June has historically been the worst month for outages in Marshall County, with 53 events recorded during that month across the dataset.
Based on this history, Marshall County earns a Reliability Grade of C, placing it in the 56th percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Kentucky
Counties with the closest reliability grade and national percentile to Marshall County.
| County | Grade | National percentile |
|---|---|---|
| Crittenden County | C | 56th |
| Casey County | C | 56th |
| Morgan County | C | 57th |
| Graves County | C | 55th |
| Henderson County | C | 57th |
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 Marshall County?
Between 2017 and 2025, Marshall County recorded 399 outage events, averaging 2.4 hours each.
What is Marshall County's reliability grade?
Marshall County has a Reliability Grade of C, in the 56th national percentile.
What was the worst power outage in Marshall County?
The worst outage on record started May 17, 2025 (Hail), lasting 38 hours and affecting up to 11,045 customers.