Cook County Power Outage History
2015–2025 · 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 |
|---|---|---|---|
| Aug 30, 2023 | 107 hrs | 6,227 (62%) | Hurricane Idalia |
| Jan 9, 2024 | 12 hrs | 3,006 (30%) | Thunderstorm Wind |
| Sep 27, 2024 | 160 hrs | 1,637 (16%) | Hurricane Helene |
| Sep 11, 2017 | 96 hrs | 1,552 (15%) | Hurricane Irma |
| Aug 5, 2024 | 32 hrs | 1,442 (14%) | Hurricane Debby |
Over the 11 years from 2015 to 2025, Cook County recorded 166 distinct power outage events, averaging 5.0 hours per event.
The single worst outage on record in Cook County started August 30, 2023 (Hurricane Idalia), lasting 107 hours and leaving up to 6,227 customers without power (62% of the county) at its peak.
September has historically been the worst month for outages in Cook County, with 24 events recorded during that month across the dataset.
Based on this history, Cook County earns a Reliability Grade of D, placing it in the 30th 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 Cook County.
| County | Grade | National percentile |
|---|---|---|
| Miller County | D | 30th |
| Mitchell County | D | 29th |
| Lincoln County | D | 29th |
| Jasper County | D | 29th |
| DeKalb County | D | 30th |
FAQ
How often does power go out in Cook County?
Between 2015 and 2025, Cook County recorded 166 outage events, averaging 5.0 hours each.
What is Cook County's reliability grade?
Cook County has a Reliability Grade of D, in the 30th national percentile.
What was the worst power outage in Cook County?
The worst outage on record started August 30, 2023 (Hurricane Idalia), lasting 107 hours and affecting up to 6,227 customers.