Fairfield CountyPower Outage History
What this grade means
Average — typical outage frequency and duration nationally. This county sits in the middle of the national distribution — its outage frequency and duration over the past 12 years are close to the nationwide median, neither notably better nor worse than most other US counties. A typical amount of backup-power preparedness is reasonable here.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Sep 27, 2024 | 170 hrs | 7,510 (33%) | Tropical Storm Helene |
| Aug 7, 2023 | 11 hrs | 2,817 (12%) | Thunderstorm Wind |
| Apr 15, 2018 | 30 hrs | 2,717 (12%) | Thunderstorm Wind |
| Feb 17, 2015 | 11 hrs | 2,714 (12%) | Ice Storm |
| Feb 7, 2017 | <1 hr | 2,650 (12%) | Unnamed event |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Fairfield County, South Carolina that day.
Over the 12 years from 2014 to 2025, Fairfield County recorded 509 distinct power outage events, averaging 3.4 hours per event.
The single worst outage on record in Fairfield County started September 27, 2024 (Tropical Storm Helene), lasting 170 hours and leaving up to 7,510 customers without power (33% of the county) at its peak.
June has historically been the worst month for outages in Fairfield County, with 60 events recorded during that month across the dataset.
Based on this history, Fairfield County earns a Reliability Grade of C, placing it in the 47th percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in South Carolina
Counties with the closest reliability grade and national percentile to Fairfield County.
| County | Grade | National percentile |
|---|---|---|
| Laurens County | C | 48th |
| Williamsburg County | C | 52nd |
| Chesterfield County | C | 42nd |
| Florence County | C | 41st |
| Jasper County | C | 54th |
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 Fairfield County?
Between 2014 and 2025, Fairfield County recorded 509 outage events, averaging 3.4 hours each.
What is Fairfield County's reliability grade?
Fairfield County has a Reliability Grade of C, in the 47th national percentile.
What was the worst power outage in Fairfield County?
The worst outage on record started September 27, 2024 (Tropical Storm Helene), lasting 170 hours and affecting up to 7,510 customers.