County annual report · FIPS 45051
2025 Horry County, SC Power Outage Report
In 2025, customers in Horry County, SC went without power for an average of 1.6 hours, a total of 407K customer-hours (South Carolina average 3.0 hours). That ranks 42nd worst of 46 South Carolina counties and 2585th 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 Horry 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 | February 20, 2025 12:15 | February 20, 2025 18:45 | 6h 30m | 30,016 | 30K |
| 2 | February 22, 2025 23:00 | February 23, 2025 00:30 | 1h 30m | 27,066 | 13K |
| 3 | August 25, 2025 21:30 | August 26, 2025 04:45 | 7h 15m | 7,639 | 23K |
| 4 | August 20, 2025 02:00 | August 20, 2025 11:45 | 9h 45m | 4,694 | 4,746 |
| 5 | October 4, 2025 15:15 | October 6, 2025 16:45 | 2d 1h | 4,680 | 13K |
| 6 | August 1, 2025 19:00 | August 2, 2025 07:45 | 12h 45m | 4,270 | 12K |
| 7 | July 21, 2025 09:30 | July 22, 2025 21:15 | 1d 11h | 4,056 | 27K |
| 8 | February 1, 2025 05:45 | February 1, 2025 08:45 | 3h | 3,988 | 11K |
| 9 | May 8, 2025 21:45 | May 9, 2025 00:45 | 3h | 3,908 | 7,822 |
| 10 | December 16, 2025 04:00 | December 16, 2025 05:15 | 1h 15m | 3,648 | 3,933 |
Outage episodes by size in 2025: 186 reached 100+ customers, 63 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 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 Progress - (NC) | 2024 | 17.2 hrs | 1.70 | 2.2 hrs | 1.22 |
| South Carolina Public Service Authority | 2024 | 58 min | 0.69 | 55 min | 0.65 |
| Horry Electric Coop Inc | 2024 | 2.2 hrs | 1.85 | 1.8 hrs | 1.56 |
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 ÷ 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, 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/horry-county