County annual report · FIPS 45019
2016 Charleston County, SC Power Outage Report
In 2016, customers in Charleston County, SC went without power for an average of 15.7 hours, a total of 3.6M customer-hours (South Carolina average 13.0 hours). That ranks 18th worst of 46 South Carolina counties and 198th of 2,391 nationally.
Compared with SC, the US and 2015
Coverage line is EAGLE-I's share of South Carolina customers tracked each year.
Biggest outages in Charleston County, 2016
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | October 4, 2016 11:30 | October 8, 2016 17:45 | 4d 6h | 97,936 | 678K |
| 2 | October 8, 2016 22:30 | November 5, 2016 09:45 | 27d 11h | 79,454 | 2.8M |
| 3 | March 27, 2016 18:30 | March 28, 2016 23:15 | 1d 4h | 3,384 | 2,810 |
| 4 | February 15, 2016 14:15 | March 3, 2016 17:00 | 17d 2h | 3,274 | 20K |
| 5 | January 14, 2016 09:45 | January 15, 2016 07:30 | 21h 45m | 2,891 | 1,206 |
| 6 | May 3, 2016 11:00 | May 5, 2016 02:00 | 1d 15h | 2,772 | 16K |
| 7 | September 10, 2016 14:00 | September 10, 2016 19:15 | 5h 15m | 2,411 | 643 |
| 8 | August 22, 2016 11:30 | August 23, 2016 06:30 | 19h | 1,887 | 4,600 |
| 9 | February 7, 2016 06:00 | February 7, 2016 19:00 | 13h | 1,835 | 5,885 |
| 10 | November 19, 2016 18:45 | November 20, 2016 09:00 | 14h 15m | 1,666 | 1,925 |
Outage episodes by size in 2016: 93 reached 100+ customers, 15 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 Charleston County reported on EIA Form 861 for 2016, 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 | 2016 | 23.2 hrs | 2.80 | 1.5 hrs | 1.30 |
| Berkeley Electric Coop Inc | 2016 | 35.7 hrs | 3.44 | 3.0 hrs | 1.84 |
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 2016; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 231,046 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. Charleston County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Charleston County, SC annual power outage report, 2016, 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/2016/south-carolina/charleston-county