Nelson County Power Outage History
2014–2025 · Kentucky
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 20, 2017 | 1 hrs | 15,158 (60%) | Unnamed event |
| Nov 9, 2017 | 3 hrs | 11,813 (47%) | Unnamed event |
| Mar 3, 2023 | 117 hrs | 10,759 (43%) | High Wind |
| May 3, 2017 | 1 hrs | 4,948 (20%) | Thunderstorm Wind |
| Jan 5, 2025 | 46 hrs | 4,232 (17%) | Winter Storm |
Over the 12 years from 2014 to 2025, Nelson County recorded 879 distinct power outage events, averaging 2.3 hours per event.
The single worst outage on record in Nelson County started July 20, 2017, lasting 1 hours and leaving up to 15,158 customers without power (60% of the county) at its peak.
October has historically been the worst month for outages in Nelson County, with 132 events recorded during that month across the dataset.
Based on this history, Nelson County earns a Reliability Grade of D, placing it in the 38th percentile nationally for grid reliability (higher percentile = more reliable).
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Similar counties in Kentucky
Counties with the closest reliability grade and national percentile to Nelson County.
| County | Grade | National percentile |
|---|---|---|
| Carlisle County | D | 37th |
| Washington County | D | 37th |
| Fayette County | D | 37th |
| Nicholas County | D | 39th |
| Bell County | D | 36th |
FAQ
How often does power go out in Nelson County?
Between 2014 and 2025, Nelson County recorded 879 outage events, averaging 2.3 hours each.
What is Nelson County's reliability grade?
Nelson County has a Reliability Grade of D, in the 38th national percentile.
What was the worst power outage in Nelson County?
The worst outage on record started July 20, 2017, lasting 1 hours and affecting up to 15,158 customers.