County annual report · FIPS 45065
2025 McCormick County, SC Power Outage Report
In 2025, customers in McCormick County, SC went without power for an average of 25.3 hours, a total of 104K customer-hours (South Carolina average 3.0 hours). That ranks 1st worst of 46 South Carolina counties and 238th 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 McCormick 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 8, 2025 00:00 | June 9, 2025 01:30 | 1d 1h | 3,697 | 29K |
| 2 | January 15, 2025 14:15 | January 17, 2025 11:00 | 1d 20h | 2,597 | 18K |
| 3 | June 14, 2025 03:15 | June 14, 2025 16:45 | 13h 30m | 1,887 | 6,454 |
| 4 | June 10, 2025 14:45 | June 10, 2025 15:15 | 30m | 1,813 | 584 |
| 5 | February 16, 2025 12:00 | February 16, 2025 23:45 | 11h 45m | 1,653 | 6,556 |
| 6 | April 8, 2025 14:15 | April 8, 2025 20:00 | 5h 45m | 1,585 | 9,107 |
| 7 | September 26, 2025 23:45 | September 27, 2025 00:30 | 45m | 1,289 | 584 |
| 8 | January 6, 2025 15:45 | January 6, 2025 23:00 | 7h 15m | 958 | 2,084 |
| 9 | March 16, 2025 10:15 | March 16, 2025 16:00 | 5h 45m | 674 | 1,575 |
| 10 | January 11, 2025 14:30 | January 12, 2025 13:00 | 22h 30m | 526 | 10K |
Outage episodes by size in 2025: 32 reached 100+ customers, 7 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 McCormick 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 |
| 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 | - |
| Little River Electric Coop Inc | - | - | - | - | - |
| Town of McCormick - (SC) | - | - | - | - | - |
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 ÷ 4,091 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. McCormick County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), McCormick 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/mccormick-county