County annual report · FIPS 45051
2023 Horry County, SC Power Outage Report
In 2023, customers in Horry County, SC went without power for an average of 1.7 hours, a total of 432K customer-hours (South Carolina average 2.7 hours). That ranks 39th worst of 46 South Carolina counties and 2416th 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 Horry 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 | December 17, 2023 15:45 | December 19, 2023 00:00 | 1d 8h | 29,827 | 121K |
| 2 | December 11, 2023 05:30 | December 12, 2023 03:30 | 22h | 22,444 | 78K |
| 3 | January 4, 2023 11:45 | January 5, 2023 02:15 | 14h 30m | 5,091 | 7,250 |
| 4 | August 7, 2023 19:15 | August 8, 2023 00:15 | 5h | 5,088 | 5,595 |
| 5 | August 30, 2023 21:15 | August 31, 2023 21:45 | 1d | 4,647 | 23K |
| 6 | August 8, 2023 01:45 | August 8, 2023 19:15 | 17h 30m | 4,402 | 7,356 |
| 7 | July 14, 2023 18:15 | July 15, 2023 10:30 | 16h 15m | 3,590 | 14K |
| 8 | September 12, 2023 02:15 | September 12, 2023 03:45 | 1h 30m | 3,587 | 5,376 |
| 9 | July 5, 2023 17:45 | July 6, 2023 00:15 | 6h 30m | 3,550 | 7,233 |
| 10 | April 1, 2023 01:15 | April 1, 2023 04:00 | 2h 45m | 3,469 | 8,766 |
Outage episodes by size in 2023: 119 reached 100+ customers, 40 reached 1,000+ customers, 2 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 Horry 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 Progress - (NC) | 2023 | 3.7 hrs | 1.47 | 2.4 hrs | 1.22 |
| South Carolina Public Service Authority | 2023 | 67 min | 0.85 | 47 min | 0.62 |
| Horry Electric Coop Inc | 2023 | 2.6 hrs | 1.54 | 1.7 hrs | 1.23 |
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 ÷ 259,189 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. Horry County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Horry 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/horry-county