Jefferson County Power Outage History
2014–2025 · Georgia
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 |
|---|---|---|---|
| Sep 27, 2024 | 426 hrs | 9,662 (99%) | Hurricane Helene |
| Oct 11, 2018 | 42 hrs | 5,197 (53%) | Hurricane Michael |
| Sep 11, 2017 | 107 hrs | 4,900 (50%) | Tropical Storm Irma |
| Apr 13, 2020 | 10 hrs | 3,622 (37%) | Thunderstorm Wind |
| Jul 17, 2024 | 0 hrs | 2,673 (27%) | Unnamed event |
Over the 12 years from 2014 to 2025, Jefferson County recorded 630 distinct power outage events, averaging 2.9 hours per event.
The single worst outage on record in Jefferson County started September 27, 2024 (Hurricane Helene), lasting 426 hours and leaving up to 9,662 customers without power (99% of the county) at its peak.
June has historically been the worst month for outages in Jefferson County, with 93 events recorded during that month across the dataset.
Based on this history, Jefferson County earns a Reliability Grade of F, placing it in the 2nd percentile nationally for grid reliability (higher percentile = more reliable).
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Similar counties in Georgia
Counties with the closest reliability grade and national percentile to Jefferson County.
| County | Grade | National percentile |
|---|---|---|
| Gilmer County | F | 2nd |
| Rabun County | F | 3rd |
| Warren County | F | 3rd |
| Taliaferro County | F | 3rd |
| Glascock County | F | 3rd |
FAQ
How often does power go out in Jefferson County?
Between 2014 and 2025, Jefferson County recorded 630 outage events, averaging 2.9 hours each.
What is Jefferson County's reliability grade?
Jefferson County has a Reliability Grade of F, in the 2nd national percentile.
What was the worst power outage in Jefferson County?
The worst outage on record started September 27, 2024 (Hurricane Helene), lasting 426 hours and affecting up to 9,662 customers.