County annual report · FIPS 45035
2023 Dorchester County, SC Power Outage Report
In 2023, customers in Dorchester County, SC went without power for an average of 2.4 hours, a total of 175K customer-hours (South Carolina average 2.7 hours). That ranks 32nd worst of 46 South Carolina counties and 2153rd 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 Dorchester 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 | November 4, 2023 11:45 | November 4, 2023 17:45 | 6h | 24,222 | 15K |
| 2 | February 19, 2023 06:45 | February 19, 2023 20:15 | 13h 30m | 15,750 | 8,012 |
| 3 | August 30, 2023 17:45 | August 31, 2023 23:30 | 1d 5h | 5,749 | 20K |
| 4 | March 21, 2023 13:00 | March 21, 2023 20:30 | 7h 30m | 3,453 | 1,067 |
| 5 | August 22, 2023 13:30 | August 22, 2023 18:30 | 5h | 3,028 | 2,307 |
| 6 | July 19, 2023 19:00 | July 20, 2023 08:00 | 13h | 2,637 | 3,677 |
| 7 | August 8, 2023 00:30 | August 8, 2023 09:30 | 9h | 2,554 | 3,879 |
| 8 | July 20, 2023 09:00 | July 20, 2023 09:30 | 30m | 2,451 | 1,225 |
| 9 | May 9, 2023 13:15 | May 9, 2023 18:30 | 5h 15m | 2,130 | 1,136 |
| 10 | February 26, 2023 03:15 | February 26, 2023 10:45 | 7h 30m | 2,101 | 12K |
Outage episodes by size in 2023: 134 reached 100+ customers, 27 reached 1,000+ customers, 2 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 Dorchester 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 | - |
| Berkeley Electric Coop Inc | 2023 | 1.8 hrs | 1.19 | 1.6 hrs | 1.10 |
| 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 ÷ 73,269 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. Dorchester County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Dorchester 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/dorchester-county