Williamsburg County Power Outage History
2014–2025 · South Carolina
Average — typical outage frequency and duration nationally. How grades are calculated
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Sep 30, 2022 | 15 hrs | 7,036 (20%) | Hurricane Ian |
| Sep 27, 2024 | 37 hrs | 6,613 (19%) | Unnamed event |
| Oct 8, 2016 | 166 hrs | 6,579 (19%) | Hurricane Matthew |
| May 9, 2023 | 2 hrs | 5,856 (17%) | Unnamed event |
| Oct 8, 2016 | 8 hrs | 5,138 (15%) | Hurricane Matthew |
Over the 12 years from 2014 to 2025, Williamsburg County recorded 636 distinct power outage events, averaging 2.3 hours per event.
The single worst outage on record in Williamsburg County started September 30, 2022 (Hurricane Ian), lasting 15 hours and leaving up to 7,036 customers without power (20% of the county) at its peak.
July has historically been the worst month for outages in Williamsburg County, with 86 events recorded during that month across the dataset.
Based on this history, Williamsburg County earns a Reliability Grade of C, placing it in the 52nd percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Williamsburg County's outage profile
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Similar counties in South Carolina
Counties with the closest reliability grade and national percentile to Williamsburg County.
| County | Grade | National percentile |
|---|---|---|
| Jasper County | C | 54th |
| Marlboro County | C | 55th |
| Laurens County | C | 48th |
| Sumter County | C | 56th |
| Fairfield County | C | 47th |
FAQ
How often does power go out in Williamsburg County?
Between 2014 and 2025, Williamsburg County recorded 636 outage events, averaging 2.3 hours each.
What is Williamsburg County's reliability grade?
Williamsburg County has a Reliability Grade of C, in the 52nd national percentile.
What was the worst power outage in Williamsburg County?
The worst outage on record started September 30, 2022 (Hurricane Ian), lasting 15 hours and affecting up to 7,036 customers.