County annual report · FIPS 45051
2018 Horry County, SC Power Outage Report
In 2018, customers in Horry County, SC went without power for an average of 4.9 hours, a total of 1.3M customer-hours (South Carolina average 5.2 hours). That ranks 21st worst of 46 South Carolina counties and 1060th of 2,798 nationally.
Compared with SC, the US and 2017
Coverage line is EAGLE-I's share of South Carolina customers tracked each year.
Biggest outages in Horry County, 2018
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | September 15, 2018 04:00 | September 25, 2018 16:15 | 10d 12h | 46,356 | 815K |
| 2 | September 13, 2018 19:45 | September 14, 2018 21:45 | 1d 2h | 40,722 | 339K |
| 3 | December 4, 2018 20:30 | December 5, 2018 05:15 | 8h 45m | 11,398 | 13K |
| 4 | June 14, 2018 19:15 | June 15, 2018 06:30 | 11h 15m | 8,823 | 16K |
| 5 | October 11, 2018 11:00 | October 12, 2018 01:45 | 14h 45m | 6,363 | 17K |
| 6 | September 4, 2018 20:30 | September 5, 2018 00:00 | 3h 30m | 3,706 | 2,842 |
| 7 | August 3, 2018 02:00 | August 3, 2018 03:45 | 1h 45m | 2,717 | 4,076 |
| 8 | January 8, 2018 19:45 | January 8, 2018 22:15 | 2h 30m | 2,618 | 4,430 |
| 9 | December 6, 2018 12:45 | December 6, 2018 22:30 | 9h 45m | 2,582 | 843 |
| 10 | July 27, 2018 12:30 | July 27, 2018 21:00 | 8h 30m | 1,963 | 3,251 |
Outage episodes by size in 2018: 76 reached 100+ customers, 23 reached 1,000+ customers, 3 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 2018, 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) | 2018 | 43.0 hrs | 2.71 | 2.6 hrs | 1.33 |
| South Carolina Public Service Authority | 2018 | 8.6 hrs | 1.10 | 21 min | 0.31 |
| Horry Electric Coop Inc | 2018 | 17.7 hrs | 1.49 | 2.8 hrs | 1.02 |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 99% of South Carolina's customers in 2018; 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, 2018, 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/2018/south-carolina/horry-county