County annual report · FIPS 45027
2023 Clarendon County, SC Power Outage Report
In 2023, customers in Clarendon County, SC went without power for an average of 4.1 hours, a total of 73K customer-hours (South Carolina average 2.7 hours). That ranks 16th worst of 46 South Carolina counties and 1652nd of 2,977 nationally.
Compared with SC, the US and 2022
Coverage line is EAGLE-I's share of South Carolina customers tracked each year.
Biggest outages in Clarendon County, 2023
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 30, 2023 21:45 | September 1, 2023 02:30 | 1d 4h | 2,121 | 28K |
| 2 | June 21, 2023 19:00 | June 22, 2023 00:45 | 5h 45m | 1,688 | 2,154 |
| 3 | August 16, 2023 19:15 | August 16, 2023 23:45 | 4h 30m | 930 | 1,349 |
| 4 | April 8, 2023 15:30 | April 8, 2023 17:00 | 1h 30m | 891 | 1,114 |
| 5 | March 26, 2023 13:45 | March 26, 2023 21:15 | 7h 30m | 763 | 1,347 |
| 6 | December 11, 2023 04:15 | December 11, 2023 15:00 | 10h 45m | 700 | 1,486 |
| 7 | August 27, 2023 22:15 | August 28, 2023 05:30 | 7h 15m | 655 | 1,480 |
| 8 | October 31, 2023 05:45 | October 31, 2023 07:15 | 1h 30m | 637 | 931 |
| 9 | September 5, 2023 16:45 | September 6, 2023 00:00 | 7h 15m | 633 | 1,195 |
| 10 | February 21, 2023 01:00 | February 21, 2023 09:00 | 8h | 601 | 3,001 |
Outage episodes by size in 2023: 58 reached 100+ customers, 2 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 Clarendon County reported on EIA Form 861 for 2023, 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) | 2023 | 3.7 hrs | 1.47 | 2.4 hrs | 1.22 |
| Black River Electric Coop, Inc - (SC) | 2023 | 2.1 hrs | 1.18 | 1.9 hrs | 1.13 |
| Santee Electric Coop, Inc | 2023 | 3.9 hrs | - | 2.4 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 2023; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 17,809 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. Clarendon County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Clarendon County, SC annual power outage report, 2023, 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/2023/south-carolina/clarendon-county