Johnson 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 | 216 hrs | 5,645 (80%) | Hurricane Helene |
| Aug 6, 2023 | 7 hrs | 5,159 (73%) | Thunderstorm Wind |
| Oct 11, 2018 | 71 hrs | 4,835 (68%) | Hurricane Michael |
| Jun 26, 2025 | 17 hrs | 3,542 (50%) | Thunderstorm Wind |
| Jun 4, 2020 | 2 hrs | 3,532 (50%) | Unnamed event |
Over the 12 years from 2014 to 2025, Johnson County recorded 581 distinct power outage events, averaging 3.3 hours per event.
The single worst outage on record in Johnson County started September 27, 2024 (Hurricane Helene), lasting 216 hours and leaving up to 5,645 customers without power (80% of the county) at its peak.
August has historically been the worst month for outages in Johnson County, with 85 events recorded during that month across the dataset.
Based on this history, Johnson County earns a Reliability Grade of F, placing it in the 5th percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Johnson County's outage profile
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Similar counties in Georgia
Counties with the closest reliability grade and national percentile to Johnson County.
| County | Grade | National percentile |
|---|---|---|
| Ware County | F | 5th |
| Evans County | F | 5th |
| Candler County | F | 5th |
| McIntosh County | F | 5th |
| Glynn County | F | 5th |
FAQ
How often does power go out in Johnson County?
Between 2014 and 2025, Johnson County recorded 581 outage events, averaging 3.3 hours each.
What is Johnson County's reliability grade?
Johnson County has a Reliability Grade of F, in the 5th national percentile.
What was the worst power outage in Johnson County?
The worst outage on record started September 27, 2024 (Hurricane Helene), lasting 216 hours and affecting up to 5,645 customers.