County annual report · FIPS 45089
2022 Williamsburg County, SC Power Outage Report
In 2022, customers in Williamsburg County, SC went without power for an average of 8.6 hours, a total of 184K customer-hours (South Carolina average 4.4 hours). That ranks 10th worst of 46 South Carolina counties and 845th of 2,976 nationally.
Compared with SC, the US and 2021
Coverage line is EAGLE-I's share of South Carolina customers tracked each year.
Biggest outages in Williamsburg County, 2022
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 30, 2022 08:00 | October 3, 2022 00:45 | 2d 16h | 7,036 | 113K |
| 2 | June 18, 2022 00:30 | June 18, 2022 08:15 | 7h 45m | 4,145 | 4,441 |
| 3 | January 3, 2022 10:00 | January 4, 2022 02:45 | 16h 45m | 2,804 | 12K |
| 4 | July 14, 2022 03:45 | July 14, 2022 04:00 | 15m | 1,538 | 385 |
| 5 | May 4, 2022 00:45 | May 4, 2022 03:15 | 2h 30m | 1,533 | 2,325 |
| 6 | January 22, 2022 02:00 | January 23, 2022 02:15 | 1d | 1,317 | 11K |
| 7 | August 11, 2022 23:30 | August 12, 2022 04:45 | 5h 15m | 1,213 | 1,578 |
| 8 | August 21, 2022 20:15 | August 22, 2022 05:45 | 9h 30m | 1,131 | 4,792 |
| 9 | July 15, 2022 05:15 | July 15, 2022 05:45 | 30m | 802 | 401 |
| 10 | January 23, 2022 06:30 | January 23, 2022 15:30 | 9h | 799 | 2,059 |
Outage episodes by size in 2022: 79 reached 100+ customers, 8 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 2022, 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) | 2022 | 9.8 hrs | 2.35 | 2.2 hrs | 1.26 |
| Santee Electric Coop, Inc | 2022 | 9.1 hrs | - | 2.3 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 99% of South Carolina's customers in 2022; 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, 2022, 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/2022/south-carolina/williamsburg-county