County annual report · FIPS 45003
2021 Aiken County, SC Power Outage Report
In 2021, customers in Aiken County, SC went without power for an average of 2.4 hours, a total of 192K customer-hours (South Carolina average 2.1 hours). That ranks 19th worst of 46 South Carolina counties and 2065th 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 Aiken 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 28, 2021 03:15 | January 28, 2021 06:15 | 3h | 13,689 | 17K |
| 2 | March 9, 2021 13:15 | March 9, 2021 16:15 | 3h | 6,604 | 7,650 |
| 3 | March 1, 2021 09:30 | March 1, 2021 10:30 | 1h | 3,561 | 2,107 |
| 4 | December 23, 2021 22:00 | December 24, 2021 03:00 | 5h | 3,397 | 1,703 |
| 5 | May 4, 2021 12:45 | May 5, 2021 17:00 | 1d 4h | 2,218 | 2,449 |
| 6 | September 12, 2021 12:45 | September 12, 2021 20:30 | 7h 45m | 2,176 | 4,470 |
| 7 | June 6, 2021 08:45 | June 6, 2021 12:45 | 4h | 2,121 | 1,776 |
| 8 | May 30, 2021 06:45 | May 30, 2021 18:15 | 11h 30m | 2,017 | 14K |
| 9 | May 11, 2021 10:15 | May 11, 2021 21:45 | 11h 30m | 1,962 | 1,739 |
| 10 | September 11, 2021 11:15 | September 11, 2021 23:00 | 11h 45m | 1,897 | 5,943 |
Outage episodes by size in 2021: 112 reached 100+ customers, 23 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 Aiken 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 |
|---|---|---|---|---|---|
| Dominion Energy South Carolina, Inc | 2021 | 1.5 hrs | 1.10 | 79 min | 1.02 |
| Aiken Electric Coop Inc | 2021 | 1.9 hrs | - | 1.6 hrs | - |
| Mid-Carolina Electric Coop Inc | 2021 | 2.3 hrs | 2.13 | 1.6 hrs | 1.84 |
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 ÷ 79,309 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. Aiken County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Aiken 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/aiken-county