County annual report · FIPS 45051
2020 Horry County, SC Power Outage Report
In 2020, customers in Horry County, SC went without power for an average of 1.2 hours, a total of 321K customer-hours (South Carolina average 5.7 hours). That ranks 45th worst of 46 South Carolina counties and 2573rd of 3,019 nationally.
Compared with SC, the US and 2019
Coverage line is EAGLE-I's share of South Carolina customers tracked each year.
Biggest outages in Horry County, 2020
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | August 3, 2020 11:00 | August 4, 2020 22:45 | 1d 11h | 14,591 | 42K |
| 2 | July 13, 2020 15:30 | July 14, 2020 04:30 | 13h | 13,276 | 19K |
| 3 | February 7, 2020 05:45 | February 7, 2020 19:45 | 14h | 9,999 | 13K |
| 4 | August 18, 2020 12:15 | August 18, 2020 20:00 | 7h 45m | 5,939 | 3,826 |
| 5 | June 15, 2020 14:45 | June 15, 2020 22:00 | 7h 15m | 4,224 | 6,273 |
| 6 | October 11, 2020 08:45 | October 12, 2020 00:30 | 15h 45m | 4,157 | 8,469 |
| 7 | October 27, 2020 10:45 | October 29, 2020 21:30 | 2d 10h | 4,096 | 2,242 |
| 8 | April 6, 2020 17:15 | April 13, 2020 20:00 | 7d 2h | 3,521 | 7,553 |
| 9 | June 29, 2020 01:15 | June 30, 2020 01:45 | 1d | 3,101 | 7,272 |
| 10 | September 16, 2020 17:45 | September 18, 2020 02:45 | 1d 9h | 3,046 | 4,086 |
Outage episodes by size in 2020: 125 reached 100+ customers, 30 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 2020, 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) | 2020 | 5.2 hrs | 1.81 | 2.3 hrs | 1.37 |
| South Carolina Public Service Authority | 2020 | 49 min | 0.60 | 24 min | 0.39 |
| Horry Electric Coop Inc | 2020 | 1.9 hrs | 1.19 | 1.7 hrs | 1.03 |
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 2020; 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, 2020, 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/2020/south-carolina/horry-county