County annual report · FIPS 45007
2021 Anderson County, SC Power Outage Report
In 2021, customers in Anderson County, SC went without power for an average of 3.3 hours, a total of 337K customer-hours (South Carolina average 2.1 hours). That ranks 13th worst of 46 South Carolina counties and 1741st 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 Anderson 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 | July 26, 2021 14:15 | July 28, 2021 13:45 | 1d 23h | 14,053 | 111K |
| 2 | July 13, 2021 02:00 | July 14, 2021 01:00 | 23h | 4,162 | 23K |
| 3 | April 24, 2021 12:45 | April 26, 2021 10:15 | 1d 21h | 2,316 | 13K |
| 4 | February 7, 2021 21:30 | February 8, 2021 06:00 | 8h 30m | 2,155 | 2,928 |
| 5 | October 1, 2021 15:15 | October 8, 2021 08:15 | 6d 17h | 2,109 | 8,179 |
| 6 | August 17, 2021 06:45 | August 18, 2021 05:30 | 22h 45m | 1,986 | 3,750 |
| 7 | August 10, 2021 12:15 | August 11, 2021 08:00 | 19h 45m | 1,920 | 4,068 |
| 8 | March 23, 2021 12:45 | March 23, 2021 20:30 | 7h 45m | 1,646 | 848 |
| 9 | January 11, 2021 08:45 | January 11, 2021 11:30 | 2h 45m | 1,634 | 2,066 |
| 10 | April 2, 2021 10:00 | April 2, 2021 19:30 | 9h 30m | 1,560 | 3,672 |
Outage episodes by size in 2021: 93 reached 100+ customers, 20 reached 1,000+ customers, 1 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 Anderson 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 | - | - | - | - | - |
| Little River Electric Coop Inc | - | - | - | - | - |
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 ÷ 101,520 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. Anderson County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Anderson 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/anderson-county