County annual report · FIPS 45065
2023 McCormick County, SC Power Outage Report
In 2023, customers in McCormick County, SC went without power for an average of 19.1 hours, a total of 78K customer-hours (South Carolina average 2.7 hours). That ranks 1st worst of 46 South Carolina counties and 435th of 2,977 nationally.
Compared with SC, the US and 2022
Coverage line is EAGLE-I's share of South Carolina customers tracked each year.
Biggest outages in McCormick County, 2023
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 21, 2023 00:00 | July 23, 2023 20:30 | 2d 20h | 4,602 | 40K |
| 2 | December 30, 2023 09:45 | December 30, 2023 11:15 | 1h 30m | 1,489 | 1,971 |
| 3 | October 9, 2023 14:00 | October 9, 2023 17:30 | 3h 30m | 1,479 | 5,145 |
| 4 | May 21, 2023 19:45 | May 21, 2023 21:00 | 1h 15m | 1,355 | 1,006 |
| 5 | June 8, 2023 06:15 | June 8, 2023 08:45 | 2h 30m | 1,114 | 1,947 |
| 6 | January 25, 2023 19:15 | January 25, 2023 19:45 | 30m | 969 | 243 |
| 7 | July 15, 2023 23:30 | July 16, 2023 12:30 | 13h | 692 | 8,640 |
| 8 | January 4, 2023 08:15 | January 4, 2023 14:30 | 6h 15m | 664 | 1,073 |
| 9 | December 11, 2023 19:30 | December 11, 2023 22:45 | 3h 15m | 557 | 976 |
| 10 | August 27, 2023 19:45 | August 28, 2023 01:15 | 5h 30m | 549 | 2,050 |
Outage episodes by size in 2023: 36 reached 100+ customers, 5 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 2023, 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 | 2023 | 5.0 hrs | 1.68 | 3.3 hrs | 1.52 |
| Dominion Energy South Carolina, Inc | 2023 | 2.0 hrs | 1.48 | 90 min | 1.32 |
| Aiken Electric Coop Inc | 2023 | 2.5 hrs | - | 1.9 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 2023; 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, 2023, 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/2023/south-carolina/mccormick-county