County annual report · FIPS 45029
2020 Colleton County, SC Power Outage Report
In 2020, customers in Colleton County, SC went without power for an average of 11.7 hours, a total of 237K customer-hours (South Carolina average 5.7 hours). That ranks 6th worst of 46 South Carolina counties and 681st of 3,019 nationally.
Compared with SC, the US and 2019
Coverage line is EAGLE-I's share of South Carolina customers tracked each year.
Biggest outages in Colleton County, 2020
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | April 6, 2020 17:15 | April 17, 2020 00:45 | 10d 7h | 12,944 | 160K |
| 2 | December 25, 2020 00:15 | December 25, 2020 11:15 | 11h | 4,103 | 13K |
| 3 | May 21, 2020 16:00 | May 21, 2020 19:00 | 3h | 2,849 | 934 |
| 4 | November 13, 2020 00:00 | November 13, 2020 06:00 | 6h | 765 | 3,436 |
| 5 | October 10, 2020 12:45 | October 10, 2020 13:45 | 1h | 746 | 746 |
| 6 | June 24, 2020 15:30 | June 24, 2020 16:30 | 1h | 735 | 303 |
| 7 | July 1, 2020 21:00 | July 2, 2020 02:00 | 5h | 698 | 878 |
| 8 | September 16, 2020 06:15 | September 16, 2020 07:15 | 1h | 677 | 677 |
| 9 | October 13, 2020 13:15 | October 13, 2020 17:45 | 4h 30m | 673 | 725 |
| 10 | April 19, 2020 15:45 | April 19, 2020 20:45 | 5h | 671 | 1,470 |
Outage episodes by size in 2020: 75 reached 100+ customers, 3 reached 1,000+ customers, 1 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 2020, 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 | 2020 | 2.4 hrs | 1.40 | 88 min | 1.17 |
| Edisto Electric Coop, Inc | 2020 | 10.8 hrs | - | 3.7 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 99% of South Carolina's customers in 2020; 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, 2020, 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/2020/south-carolina/colleton-county