County annual report · FIPS 45035
2019 Dorchester County, SC Power Outage Report
In 2019, customers in Dorchester County, SC went without power for an average of 11.2 hours, a total of 819K customer-hours (South Carolina average 4.8 hours). That ranks 5th worst of 46 South Carolina counties and 481st of 2,945 nationally.
Compared with SC, the US and 2018
Coverage line is EAGLE-I's share of South Carolina customers tracked each year.
Biggest outages in Dorchester County, 2019
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | September 5, 2019 01:30 | September 9, 2019 11:45 | 4d 10h | 41,166 | 697K |
| 2 | April 19, 2019 11:15 | April 21, 2019 01:15 | 1d 14h | 6,813 | 26K |
| 3 | November 12, 2019 12:00 | November 12, 2019 12:45 | 45m | 3,814 | 1,910 |
| 4 | July 3, 2019 23:15 | July 5, 2019 00:30 | 1d 1h | 3,675 | 12K |
| 5 | June 29, 2019 22:00 | June 30, 2019 02:45 | 4h 45m | 2,585 | 3,222 |
| 6 | August 5, 2019 23:45 | August 6, 2019 23:00 | 23h 15m | 1,845 | 3,048 |
| 7 | August 14, 2019 19:00 | August 15, 2019 02:45 | 7h 45m | 1,755 | 4,393 |
| 8 | December 18, 2019 15:30 | December 18, 2019 17:00 | 1h 30m | 1,742 | 886 |
| 9 | April 14, 2019 20:30 | April 14, 2019 23:00 | 2h 30m | 1,307 | 881 |
| 10 | December 23, 2019 12:00 | December 23, 2019 12:30 | 30m | 1,174 | 587 |
Outage episodes by size in 2019: 79 reached 100+ customers, 11 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 Dorchester County reported on EIA Form 861 for 2019, 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 | - |
| Berkeley Electric Coop Inc | 2018 | 2.9 hrs | 1.76 | 2.2 hrs | 1.55 |
| 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 2019; 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, 2019, 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/2019/south-carolina/dorchester-county