County annual report · FIPS 45083
2021 Spartanburg County, SC Power Outage Report
In 2021, customers in Spartanburg County, SC went without power for an average of 2.6 hours, a total of 383K customer-hours (South Carolina average 2.1 hours). That ranks 18th worst of 46 South Carolina counties and 2000th of 2,974 nationally.
Compared with SC, the US and 2020
Coverage line is EAGLE-I's share of South Carolina customers tracked each year.
Biggest outages in Spartanburg County, 2021
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | January 13, 2021 12:15 | January 14, 2021 01:15 | 13h | 5,792 | 5,175 |
| 2 | July 27, 2021 15:30 | July 29, 2021 05:15 | 1d 13h | 5,478 | 9,732 |
| 3 | June 20, 2021 06:45 | June 20, 2021 23:15 | 16h 30m | 5,211 | 14K |
| 4 | August 31, 2021 12:15 | September 8, 2021 13:15 | 8d 1h | 4,483 | 26K |
| 5 | April 9, 2021 11:00 | April 10, 2021 01:15 | 14h 15m | 3,738 | 966 |
| 6 | April 20, 2021 12:45 | April 21, 2021 02:30 | 13h 45m | 3,719 | 4,367 |
| 7 | August 16, 2021 10:15 | August 18, 2021 10:00 | 1d 23h | 3,576 | 20K |
| 8 | October 19, 2021 12:30 | October 20, 2021 03:45 | 15h 15m | 3,308 | 2,299 |
| 9 | August 10, 2021 10:15 | August 12, 2021 06:15 | 1d 20h | 3,104 | 6,742 |
| 10 | January 9, 2021 00:15 | January 10, 2021 09:45 | 1d 9h | 3,066 | 4,016 |
Outage episodes by size in 2021: 167 reached 100+ customers, 52 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 2021, 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 | 2021 | 3.5 hrs | 1.20 | 2.5 hrs | 1.10 |
| Laurens Electric Coop, Inc | 2021 | 84 min | 0.92 | 84 min | 0.92 |
| Blue Ridge Electric Coop Inc - (SC) | 2021 | 2.3 hrs | - | 2.0 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 99% of South Carolina's customers in 2021; 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, 2021, 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/2021/south-carolina/spartanburg-county