County annual report · FIPS 45003
2025 Aiken County, SC Power Outage Report
In 2025, customers in Aiken County, SC went without power for an average of 3.7 hours, a total of 293K customer-hours (South Carolina average 3.0 hours). That ranks 18th worst of 46 South Carolina counties and 1850th 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 Aiken 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 | June 7, 2025 21:15 | June 8, 2025 23:30 | 1d 2h | 16,695 | 80K |
| 2 | May 27, 2025 23:15 | May 28, 2025 06:45 | 7h 30m | 7,154 | 2,625 |
| 3 | June 25, 2025 18:45 | June 26, 2025 16:00 | 21h 15m | 4,596 | 15K |
| 4 | May 11, 2025 05:30 | May 13, 2025 23:15 | 2d 17h | 3,908 | 14K |
| 5 | August 14, 2025 03:00 | August 14, 2025 09:30 | 6h 30m | 3,588 | 5,418 |
| 6 | November 10, 2025 21:15 | November 11, 2025 06:15 | 9h | 2,996 | 6,011 |
| 7 | February 21, 2025 13:45 | February 21, 2025 23:45 | 10h | 2,962 | 1,564 |
| 8 | May 15, 2025 04:45 | May 15, 2025 07:30 | 2h 45m | 2,622 | 2,754 |
| 9 | July 29, 2025 20:45 | July 30, 2025 07:45 | 11h | 2,602 | 5,011 |
| 10 | October 28, 2025 20:45 | October 29, 2025 03:45 | 7h | 2,350 | 621 |
Outage episodes by size in 2025: 148 reached 100+ customers, 40 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 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 |
|---|---|---|---|---|---|
| Dominion Energy South Carolina, Inc | 2024 | 31.8 hrs | 2.52 | 81 min | 1.19 |
| Aiken Electric Coop Inc | 2024 | 132.4 hrs | - | 1.6 hrs | - |
| Mid-Carolina Electric Coop Inc | 2024 | 65.3 hrs | 3.22 | 2.0 hrs | 1.62 |
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 ÷ 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, 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/aiken-county