County annual report · FIPS 45089
2015 Williamsburg County, SC Power Outage Report
In 2015, customers in Williamsburg County, SC went without power for an average of 2.0 hours, a total of 43K customer-hours (South Carolina average 2.5 hours). That ranks 24th worst of 46 South Carolina counties and 1239th of 2,484 nationally.
Compared with SC, the US
Coverage line is EAGLE-I's share of South Carolina customers tracked each year.
Biggest outages in Williamsburg County, 2015
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | October 5, 2015 04:30 | October 6, 2015 00:00 | 19h 30m | 4,203 | 7,367 |
| 2 | February 8, 2015 16:30 | February 8, 2015 17:30 | 1h | 1,163 | 1,163 |
| 3 | June 20, 2015 02:45 | June 20, 2015 19:15 | 16h 30m | 1,091 | 3,403 |
| 4 | May 26, 2015 21:15 | May 26, 2015 21:30 | 15m | 834 | 209 |
| 5 | May 20, 2015 17:30 | May 20, 2015 18:00 | 30m | 793 | 199 |
| 6 | August 12, 2015 02:00 | August 12, 2015 12:30 | 10h 30m | 670 | 2,090 |
| 7 | October 16, 2015 12:30 | October 16, 2015 23:15 | 10h 45m | 634 | 225 |
| 8 | December 25, 2015 16:45 | December 25, 2015 18:45 | 2h | 632 | 1,264 |
| 9 | June 8, 2015 20:30 | June 8, 2015 22:15 | 1h 45m | 607 | 458 |
| 10 | May 10, 2015 15:15 | May 10, 2015 20:15 | 5h | 596 | 1,048 |
Outage episodes by size in 2015: 41 reached 100+ customers, 3 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 Williamsburg County reported on EIA Form 861 for 2015, 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) | 2015 | 4.8 hrs | 1.90 | 3.0 hrs | 1.65 |
| Santee Electric Coop, Inc | 2015 | 3.9 hrs | - | 2.7 hrs | - |
| Duke Energy | - | - | - | - | - |
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 2015; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 21,455 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. Williamsburg County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Williamsburg County, SC annual power outage report, 2015, 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/2015/south-carolina/williamsburg-county