Anderson County Power Outage History
2014–2025 · South Carolina
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 | 282 hrs | 106,940 (67%) | Tropical Storm |
| Sep 11, 2017 | 82 hrs | 27,678 (17%) | Tropical Storm Irma |
| May 9, 2024 | 61 hrs | 25,580 (16%) | Hail |
| Feb 17, 2015 | 30 hrs | 24,801 (16%) | High Wind |
| Feb 16, 2015 | 20 hrs | 23,789 (15%) | High Wind |
Over the 12 years from 2014 to 2025, Anderson County recorded 1,320 distinct power outage events, averaging 3.6 hours per event.
The single worst outage on record in Anderson County started September 27, 2024 (Tropical Storm), lasting 282 hours and leaving up to 106,940 customers without power (67% of the county) at its peak.
June has historically been the worst month for outages in Anderson County, with 174 events recorded during that month across the dataset.
Based on this history, Anderson County earns a Reliability Grade of F, placing it in the 14th percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Anderson County's outage profile
See more picks in our Best Dual-Fuel Portable Generators for Power Outages roundup.
Champion Power Equipment 4375-Watt Dual Fuel RV Ready Portable Generator with Free 3-Year Warranty
Outage-prep kit
See our outage-prep guides.
Similar counties in South Carolina
Counties with the closest reliability grade and national percentile to Anderson County.
| County | Grade | National percentile |
|---|---|---|
| Marion County | F | 14th |
| Spartanburg County | F | 12th |
| Abbeville County | F | 15th |
| Dillon County | F | 12th |
| Greenville County | F | 8th |
FAQ
How often does power go out in Anderson County?
Between 2014 and 2025, Anderson County recorded 1,320 outage events, averaging 3.6 hours each.
What is Anderson County's reliability grade?
Anderson County has a Reliability Grade of F, in the 14th national percentile.
What was the worst power outage in Anderson County?
The worst outage on record started September 27, 2024 (Tropical Storm), lasting 282 hours and affecting up to 106,940 customers.