Edgefield CountyPower Outage History
What this grade means
Worse than average — more frequent or longer outages than most counties. This county's recorded history shows more frequent outages and/or longer restoration times than most US counties over the same 12-year period. If you live here, it's worth taking backup power more seriously than an average household would.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Sep 27, 2024 | 350 hrs | 13,969 (44%) | Tropical Storm Helene |
| Jun 8, 2025 | 18 hrs | 6,362 (20%) | Thunderstorm Wind |
| May 20, 2022 | 4 hrs | 4,610 (15%) | Unnamed event |
| Jul 21, 2023 | 12 hrs | 4,367 (14%) | Thunderstorm Wind |
| Sep 11, 2017 | 47 hrs | 3,991 (13%) | Unnamed event |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Edgefield County, South Carolina that day.
Over the 12 years from 2014 to 2025, Edgefield County recorded 613 distinct power outage events, averaging 2.5 hours per event.
The single worst outage on record in Edgefield County started September 27, 2024 (Tropical Storm Helene), lasting 350 hours and leaving up to 13,969 customers without power (44% of the county) at its peak.
May has historically been the worst month for outages in Edgefield County, with 82 events recorded during that month across the dataset.
Based on this history, Edgefield County earns a Reliability Grade of D, placing it in the 21st percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in South Carolina
Counties with the closest reliability grade and national percentile to Edgefield County.
| County | Grade | National percentile |
|---|---|---|
| Saluda County | D | 22nd |
| Oconee County | F | 19th |
| Newberry County | D | 23rd |
| Greenwood County | D | 23rd |
| Pickens County | D | 24th |
Most reliable counties nationally
The top 3 counties nationally by reliability grade and percentile.
| County | State | Grade | National percentile |
|---|---|---|---|
| Clay County | South Dakota | A | 100th |
| Clearwater County | Minnesota | A | 99th |
| Limestone County | Alabama | A | 99th |
Least reliable counties nationally
The bottom 3 counties nationally by reliability grade and percentile.
| County | State | Grade | National percentile |
|---|---|---|---|
| Clay County | West Virginia | F | 0th |
| Lincoln County | West Virginia | F | 0th |
| Cameron Parish | Louisiana | F | 0th |
FAQ
How often does power go out in Edgefield County?
Between 2014 and 2025, Edgefield County recorded 613 outage events, averaging 2.5 hours each.
What is Edgefield County's reliability grade?
Edgefield County has a Reliability Grade of D, in the 21st national percentile.
What was the worst power outage in Edgefield County?
The worst outage on record started September 27, 2024 (Tropical Storm Helene), lasting 350 hours and affecting up to 13,969 customers.