Carter County Power Outage History
2014–2025 · Kentucky
Bottom 20% least reliable nationally — frequent and/or long outages. How grades are calculated
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Feb 11, 2021 | 181 hrs | 11,506 (89%) | Winter Storm |
| Feb 18, 2021 | 123 hrs | 8,010 (62%) | Winter Storm |
| Sep 27, 2024 | 127 hrs | 5,888 (45%) | Hurricane Helene |
| Jul 13, 2015 | 27 hrs | 5,868 (45%) | Thunderstorm Wind |
| Jul 14, 2015 | 69 hrs | 3,703 (29%) | Thunderstorm Wind |
Over the 12 years from 2014 to 2025, Carter County recorded 839 distinct power outage events, averaging 3.6 hours per event.
The single worst outage on record in Carter County started February 11, 2021 (Winter Storm), lasting 181 hours and leaving up to 11,506 customers without power (89% of the county) at its peak.
June has historically been the worst month for outages in Carter County, with 106 events recorded during that month across the dataset.
Based on this history, Carter County earns a Reliability Grade of F, placing it in the 3rd percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Carter County's outage profile
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Similar counties in Kentucky
Counties with the closest reliability grade and national percentile to Carter County.
| County | Grade | National percentile |
|---|---|---|
| Martin County | F | 2nd |
| Letcher County | F | 4th |
| Knott County | F | 2nd |
| Lawrence County | F | 1st |
| Perry County | F | 4th |
FAQ
How often does power go out in Carter County?
Between 2014 and 2025, Carter County recorded 839 outage events, averaging 3.6 hours each.
What is Carter County's reliability grade?
Carter County has a Reliability Grade of F, in the 3rd national percentile.
What was the worst power outage in Carter County?
The worst outage on record started February 11, 2021 (Winter Storm), lasting 181 hours and affecting up to 11,506 customers.