County annual report · FIPS 45035
2017 Dorchester County, SC Power Outage Report
In 2017, customers in Dorchester County, SC went without power for an average of 2.9 hours, a total of 213K customer-hours (South Carolina average 4.4 hours). That ranks 30th worst of 46 South Carolina counties and 1358th of 2,786 nationally.
Compared with SC, the US and 2016
Coverage line is EAGLE-I's share of South Carolina customers tracked each year.
Biggest outages in Dorchester County, 2017
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 11, 2017 12:15 | September 14, 2017 03:15 | 2d 15h | 16,079 | 114K |
| 2 | October 31, 2017 03:45 | October 31, 2017 08:30 | 4h 45m | 5,071 | 1,858 |
| 3 | April 27, 2017 13:30 | April 27, 2017 13:45 | 15m | 3,503 | 876 |
| 4 | June 27, 2017 04:15 | June 27, 2017 04:30 | 15m | 3,376 | 844 |
| 5 | April 3, 2017 22:15 | April 4, 2017 07:45 | 9h 30m | 3,357 | 8,527 |
| 6 | October 24, 2017 00:15 | October 24, 2017 08:15 | 8h | 3,328 | 5,050 |
| 7 | November 14, 2017 12:15 | November 14, 2017 12:30 | 15m | 3,317 | 829 |
| 8 | May 24, 2017 18:30 | May 24, 2017 23:30 | 5h | 1,995 | 3,878 |
| 9 | December 20, 2017 20:15 | December 21, 2017 03:15 | 7h | 1,577 | 1,253 |
| 10 | July 15, 2017 18:45 | July 16, 2017 09:15 | 14h 30m | 1,325 | 2,778 |
Outage episodes by size in 2017: 105 reached 100+ customers, 12 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 2017, 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 | 2017 | 5.5 hrs | 1.85 | 82 min | 1.14 |
| Edisto Electric Coop, Inc | 2017 | 3.4 hrs | - | 50 min | - |
| Berkeley Electric Coop Inc | 2017 | 9.0 hrs | 2.38 | 2.3 hrs | 1.79 |
| Coastal Electric Coop, Inc | 2017 | 7.1 hrs | 2.78 | 3.5 hrs | 2.01 |
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 2017; 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, 2017, 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/2017/south-carolina/dorchester-county