DeKalb County Power Outage History
2014–2025 · Georgia
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 |
|---|---|---|---|
| Sep 11, 2017 | 113 hrs | 176,310 (49%) | Tropical Storm Irma |
| Oct 29, 2020 | 111 hrs | 139,779 (39%) | Tropical Storm Zeta |
| Mar 22, 2017 | 23 hrs | 75,787 (21%) | Drought |
| Aug 7, 2023 | 13 hrs | 69,184 (19%) | Thunderstorm Wind |
| Jun 25, 2023 | 38 hrs | 66,499 (18%) | Unnamed event |
Over the 12 years from 2014 to 2025, DeKalb County recorded 4,397 distinct power outage events, averaging 2.3 hours per event.
The single worst outage on record in DeKalb County started September 11, 2017 (Tropical Storm Irma), lasting 113 hours and leaving up to 176,310 customers without power (49% of the county) at its peak.
July has historically been the worst month for outages in DeKalb County, with 548 events recorded during that month across the dataset.
Based on this history, DeKalb County earns a Reliability Grade of D, placing it in the 30th percentile nationally for grid reliability (higher percentile = more reliable).
Sized for DeKalb County's outage profile
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Similar counties in Georgia
Counties with the closest reliability grade and national percentile to DeKalb County.
| County | Grade | National percentile |
|---|---|---|
| Miller County | D | 30th |
| Cook County | D | 30th |
| Mitchell County | D | 29th |
| Lincoln County | D | 29th |
| Jasper County | D | 29th |
FAQ
How often does power go out in DeKalb County?
Between 2014 and 2025, DeKalb County recorded 4,397 outage events, averaging 2.3 hours each.
What is DeKalb County's reliability grade?
DeKalb County has a Reliability Grade of D, in the 30th national percentile.
What was the worst power outage in DeKalb County?
The worst outage on record started September 11, 2017 (Tropical Storm Irma), lasting 113 hours and affecting up to 176,310 customers.