Spartanburg CountyPower Outage History
What this grade means
Bottom 20% least reliable nationally — frequent and/or long outages. This county ranks in the least reliable fifth of all US counties in our dataset: some combination of frequent outages, long restoration times, or customers affected puts it near the bottom nationally. Backup power is worth prioritizing here rather than treating it as optional.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Sep 27, 2024 | 336 hrs | 183,816 (72%) | Tropical Storm |
| Oct 29, 2020 | 80 hrs | 31,486 (12%) | Unnamed event |
| Dec 9, 2018 | 87 hrs | 30,253 (12%) | Unnamed event |
| Oct 23, 2017 | 55 hrs | 20,577 (8%) | Tornado |
| Dec 29, 2024 | 6 hrs | 20,420 (8%) | Tornado |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Spartanburg County, South Carolina that day.
Over the 12 years from 2014 to 2025, Spartanburg County recorded 1,883 distinct power outage events, averaging 2.8 hours per event.
The single worst outage on record in Spartanburg County started September 27, 2024 (Tropical Storm), lasting 336 hours and leaving up to 183,816 customers without power (72% of the county) at its peak.
June has historically been the worst month for outages in Spartanburg County, with 227 events recorded during that month across the dataset.
Based on this history, Spartanburg County earns a Reliability Grade of F, placing it in the 12th percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in South Carolina
Counties with the closest reliability grade and national percentile to Spartanburg County.
| County | Grade | National percentile |
|---|---|---|
| Dillon County | F | 12th |
| Anderson County | F | 14th |
| Marion County | F | 14th |
| Abbeville County | F | 15th |
| Greenville County | F | 8th |
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 Spartanburg County?
Between 2014 and 2025, Spartanburg County recorded 1,883 outage events, averaging 2.8 hours each.
What is Spartanburg County's reliability grade?
Spartanburg County has a Reliability Grade of F, in the 12th national percentile.
What was the worst power outage in Spartanburg County?
The worst outage on record started September 27, 2024 (Tropical Storm), lasting 336 hours and affecting up to 183,816 customers.