County annual report · FIPS 45083
2025 Spartanburg County, SC Power Outage Report
In 2025, customers in Spartanburg County, SC went without power for an average of 3.2 hours, a total of 473K customer-hours (South Carolina average 3.0 hours). That ranks 23rd worst of 46 South Carolina counties and 1995th of 3,000 nationally.
Compared with SC, the US and 2024
Coverage line is EAGLE-I's share of South Carolina customers tracked each year.
Biggest outages in Spartanburg County, 2025
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | July 30, 2025 18:15 | August 2, 2025 04:00 | 2d 9h | 7,579 | 20K |
| 2 | June 8, 2025 00:15 | June 9, 2025 07:00 | 1d 6h | 7,517 | 37K |
| 3 | June 25, 2025 11:30 | June 26, 2025 13:00 | 1d 1h | 6,772 | 38K |
| 4 | June 16, 2025 11:15 | June 19, 2025 05:15 | 2d 18h | 6,024 | 31K |
| 5 | January 21, 2025 05:45 | January 23, 2025 00:45 | 1d 19h | 5,576 | 9,225 |
| 6 | July 21, 2025 12:15 | July 22, 2025 06:15 | 18h | 4,630 | 6,605 |
| 7 | June 20, 2025 12:00 | June 21, 2025 00:15 | 12h 15m | 3,997 | 4,120 |
| 8 | July 29, 2025 01:15 | July 30, 2025 14:45 | 1d 13h | 3,840 | 16K |
| 9 | August 4, 2025 11:30 | August 6, 2025 23:00 | 2d 11h | 3,398 | 15K |
| 10 | December 18, 2025 13:00 | December 18, 2025 21:15 | 8h 15m | 3,349 | 7,009 |
Outage episodes by size in 2025: 158 reached 100+ customers, 44 reached 1,000+ customers, 0 reached 10,000+ customers.
Utility reliability filed with the EIA
SAIDI (average outage time per customer) and SAIFI (average interruptions per customer) that utilities serving Spartanburg County reported on EIA Form 861 for 2025, or their most recent earlier filing. Utility-wide figures, not county-specific.
| Utility | EIA year | SAIDI | SAIFI | SAIDI excl. major events | SAIFI excl. major events |
|---|---|---|---|---|---|
| Duke Energy Carolinas, LLC | 2024 | 78.6 hrs | 2.50 | 2.9 hrs | 1.26 |
| Laurens Electric Coop, Inc | 2024 | 138.5 hrs | 2.84 | 1.6 hrs | 1.14 |
| Blue Ridge Electric Coop Inc - (SC) | 2024 | 88.2 hrs | - | 3.2 hrs | - |
| Duke Energy | - | - | - | - | - |
| Broad River Electric Coop, Inc | - | - | - | - | - |
| Lockhart Power Co | - | - | - | - | - |
| Greer Commission of Public Wks | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about n/a of South Carolina's customers in 2025; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 147,558 customers (ORNL modeled county customer count), including major storm days. It is comparable across counties but is not the SAIDI a utility files.
- An outage event is a continuous stretch with customers out; counts at 100, 1,000 and 10,000+ use its peak.
- Years loaded: 2015–2025. Spartanburg County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Spartanburg County, SC annual power outage report, 2025, data as of Oct 3, 2026 02:41 UTC, sources: DOE EAGLE-I (https://eagle-i.doe.gov/); EAGLE-I modeled customer counts (MCC) (https://figshare.com/); EIA Form 861 (utility reliability) (https://www.eia.gov/electricity/data/eia861/). https://massoutage.com/reports/2025/south-carolina/spartanburg-county