County annual report · FIPS 45029
2018 Colleton County, SC Power Outage Report
In 2018, customers in Colleton County, SC went without power for an average of 7.7 hours, a total of 157K customer-hours (South Carolina average 5.2 hours). That ranks 12th worst of 46 South Carolina counties and 714th of 2,798 nationally.
Compared with SC, the US and 2017
Coverage line is EAGLE-I's share of South Carolina customers tracked each year.
Biggest outages in Colleton County, 2018
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 11, 2018 02:45 | October 12, 2018 03:15 | 1d | 7,991 | 48K |
| 2 | January 3, 2018 18:45 | January 4, 2018 10:15 | 15h 30m | 2,577 | 2,985 |
| 3 | June 28, 2018 02:30 | June 28, 2018 21:45 | 19h 15m | 2,497 | 3,901 |
| 4 | August 9, 2018 23:15 | August 10, 2018 13:45 | 14h 30m | 2,200 | 14K |
| 5 | April 15, 2018 14:00 | April 16, 2018 04:45 | 14h 45m | 1,829 | 4,057 |
| 6 | August 1, 2018 11:45 | August 1, 2018 13:30 | 1h 45m | 1,758 | 3,076 |
| 7 | December 18, 2018 18:00 | December 19, 2018 01:15 | 7h 15m | 1,286 | 3,174 |
| 8 | December 28, 2018 11:00 | December 28, 2018 12:30 | 1h 30m | 1,228 | 1,535 |
| 9 | June 2, 2018 22:15 | June 3, 2018 05:00 | 6h 45m | 1,113 | 5,279 |
| 10 | December 16, 2018 12:15 | December 16, 2018 17:30 | 5h 15m | 960 | 4,920 |
Outage episodes by size in 2018: 97 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 2018, 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 | 2018 | 2.8 hrs | 1.80 | 1.6 hrs | 1.37 |
| Edisto Electric Coop, Inc | 2018 | 3.3 hrs | - | 74 min | - |
| 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 99% of South Carolina's customers in 2018; 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, 2018, 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/2018/south-carolina/colleton-county