County annual report · FIPS 45035
2020 Dorchester County, SC Power Outage Report
In 2020, customers in Dorchester County, SC went without power for an average of 2.7 hours, a total of 197K customer-hours (South Carolina average 5.7 hours). That ranks 32nd worst of 46 South Carolina counties and 1983rd 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 Dorchester 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 13, 2020 12:45 | April 15, 2020 18:15 | 2d 5h | 13,943 | 108K |
| 2 | March 11, 2020 22:30 | March 12, 2020 02:00 | 3h 30m | 3,837 | 4,307 |
| 3 | June 27, 2020 23:45 | June 29, 2020 05:00 | 1d 5h | 2,900 | 9,656 |
| 4 | August 1, 2020 19:00 | August 2, 2020 00:00 | 5h | 2,430 | 1,265 |
| 5 | April 16, 2020 13:15 | April 16, 2020 18:45 | 5h 30m | 2,413 | 3,735 |
| 6 | December 25, 2020 00:45 | December 25, 2020 11:00 | 10h 15m | 2,209 | 4,894 |
| 7 | June 19, 2020 20:45 | June 20, 2020 02:00 | 5h 15m | 2,033 | 2,284 |
| 8 | August 18, 2020 10:00 | August 18, 2020 11:00 | 1h | 1,848 | 1,309 |
| 9 | June 5, 2020 10:45 | June 5, 2020 11:15 | 30m | 1,835 | 470 |
| 10 | February 19, 2020 06:00 | February 19, 2020 18:00 | 12h | 1,547 | 2,697 |
Outage episodes by size in 2020: 98 reached 100+ customers, 13 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 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 | - |
| Berkeley Electric Coop Inc | 2020 | 5.3 hrs | 1.69 | 1.9 hrs | 1.27 |
| 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 ÷ 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, 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/dorchester-county