County annual report · FIPS 45089
2017 Williamsburg County, SC Power Outage Report
In 2017, customers in Williamsburg County, SC went without power for an average of 3.8 hours, a total of 81K customer-hours (South Carolina average 4.4 hours). That ranks 23rd worst of 46 South Carolina counties and 1158th of 2,786 nationally.
Compared with SC, the US and 2016
Coverage line is EAGLE-I's share of South Carolina customers tracked each year.
Biggest outages in Williamsburg County, 2017
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 24, 2017 00:45 | October 24, 2017 20:15 | 19h 30m | 5,092 | 18K |
| 2 | September 11, 2017 08:45 | September 13, 2017 00:30 | 1d 15h | 2,671 | 32K |
| 3 | June 3, 2017 21:15 | June 4, 2017 06:15 | 9h | 1,246 | 5,479 |
| 4 | June 14, 2017 12:15 | June 15, 2017 03:15 | 15h | 1,172 | 1,959 |
| 5 | February 12, 2017 12:30 | February 12, 2017 14:00 | 1h 30m | 821 | 1,025 |
| 6 | March 22, 2017 00:15 | March 22, 2017 06:45 | 6h 30m | 820 | 3,241 |
| 7 | May 30, 2017 02:15 | May 30, 2017 10:00 | 7h 45m | 746 | 1,940 |
| 8 | April 5, 2017 21:00 | April 6, 2017 02:15 | 5h 15m | 621 | 894 |
| 9 | October 3, 2017 21:15 | October 3, 2017 22:15 | 1h | 579 | 147 |
| 10 | January 9, 2017 12:15 | January 9, 2017 14:30 | 2h 15m | 469 | 813 |
Outage episodes by size in 2017: 43 reached 100+ customers, 4 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 2017, 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) | 2017 | 3.2 hrs | 1.52 | 2.7 hrs | 1.47 |
| Santee Electric Coop, Inc | 2017 | 4.9 hrs | - | 3.5 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 2017; 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, 2017, 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/2017/south-carolina/williamsburg-county