Spartanburg County Power Outage History
2014–2025 · South Carolina
Bottom 20% least reliable nationally — frequent and/or long outages. How grades are calculated
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 |
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).
Sized for Spartanburg County's outage profile
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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 |
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.