Horry CountyPower Outage History
What this grade means
Better than average — fewer or shorter outages than most counties. This county's outage history is better than the national median: recorded outages are less frequent and/or shorter in duration than a typical US county experienced over the same 12-year period. It isn't in the top tier nationally, but its track record points to lower-than-average outage risk.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Oct 8, 2016 | 195 hrs | 183,359 (29%) | Hurricane Matthew |
| Sep 30, 2022 | 20 hrs | 88,018 (14%) | Hurricane Ian |
| Oct 7, 2015 | <1 hr | 49,109 (8%) | Hurricane Joaquin |
| Sep 15, 2018 | 64 hrs | 46,356 (7%) | Hurricane Florence |
| Feb 5, 2016 | 2 hrs | 45,469 (7%) | Unnamed event |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Horry County, South Carolina that day.
Over the 12 years from 2014 to 2025, Horry County recorded 1,296 distinct power outage events, averaging 1.9 hours per event.
The single worst outage on record in Horry County started October 8, 2016 (Hurricane Matthew), lasting 195 hours and leaving up to 183,359 customers without power (29% of the county) at its peak.
August has historically been the worst month for outages in Horry County, with 152 events recorded during that month across the dataset.
Based on this history, Horry County earns a Reliability Grade of B, placing it in the 76th percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in South Carolina
Counties with the closest reliability grade and national percentile to Horry County.
| County | Grade | National percentile |
|---|---|---|
| Richland County | B | 76th |
| Dorchester County | B | 74th |
| Union County | B | 80th |
| Orangeburg County | B | 80th |
| Georgetown County | B | 72nd |
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 Horry County?
Between 2014 and 2025, Horry County recorded 1,296 outage events, averaging 1.9 hours each.
What is Horry County's reliability grade?
Horry County has a Reliability Grade of B, in the 76th national percentile.
What was the worst power outage in Horry County?
The worst outage on record started October 8, 2016 (Hurricane Matthew), lasting 195 hours and affecting up to 183,359 customers.