County annual report · FIPS 45029
2023 Colleton County, SC Power Outage Report
In 2023, customers in Colleton County, SC went without power for an average of 6.0 hours, a total of 122K customer-hours (South Carolina average 2.7 hours). That ranks 5th worst of 46 South Carolina counties and 1294th 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 Colleton 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 15:30 | September 1, 2023 02:00 | 1d 10h | 5,454 | 30K |
| 2 | July 5, 2023 18:30 | July 6, 2023 04:30 | 10h | 2,711 | 8,609 |
| 3 | June 1, 2023 18:00 | June 1, 2023 19:00 | 1h | 2,490 | 2,490 |
| 4 | December 11, 2023 03:30 | December 11, 2023 17:30 | 14h | 2,306 | 5,601 |
| 5 | August 7, 2023 12:00 | August 8, 2023 22:00 | 1d 10h | 1,558 | 4,633 |
| 6 | March 2, 2023 18:00 | March 2, 2023 18:45 | 45m | 1,154 | 293 |
| 7 | January 29, 2023 19:15 | January 29, 2023 22:00 | 2h 45m | 1,096 | 1,914 |
| 8 | July 30, 2023 12:30 | July 31, 2023 19:45 | 1d 7h | 1,094 | 4,544 |
| 9 | December 17, 2023 14:15 | December 18, 2023 10:30 | 20h 15m | 1,029 | 6,932 |
| 10 | April 17, 2023 18:45 | April 17, 2023 19:00 | 15m | 927 | 232 |
Outage episodes by size in 2023: 85 reached 100+ customers, 9 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 Colleton 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 |
|---|---|---|---|---|---|
| Dominion Energy South Carolina, Inc | 2023 | 2.0 hrs | 1.48 | 90 min | 1.32 |
| Edisto Electric Coop, Inc | 2023 | 7.6 hrs | - | 5.6 hrs | - |
| Coastal Electric Coop, Inc | 2018 | 5.2 hrs | 2.73 | 3.2 hrs | 2.21 |
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 ÷ 20,355 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. Colleton County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Colleton 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/colleton-county