County annual report · FIPS 45015
2018 Berkeley County, SC Power Outage Report
In 2018, customers in Berkeley County, SC went without power for an average of 1.6 hours, a total of 263K customer-hours (South Carolina average 5.2 hours). That ranks 43rd worst of 46 South Carolina counties and 2034th of 2,798 nationally.
Compared with SC, the US and 2017
Coverage line is EAGLE-I's share of South Carolina customers tracked each year.
Biggest outages in Berkeley County, 2018
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | May 7, 2018 12:15 | May 7, 2018 17:00 | 4h 45m | 13,739 | 9,409 |
| 2 | May 12, 2018 00:00 | May 12, 2018 02:00 | 2h | 10,034 | 11K |
| 3 | July 24, 2018 03:15 | July 24, 2018 17:15 | 14h | 8,306 | 34K |
| 4 | October 11, 2018 05:15 | October 11, 2018 23:15 | 18h | 4,041 | 19K |
| 5 | August 9, 2018 18:45 | August 10, 2018 06:00 | 11h 15m | 3,860 | 9,231 |
| 6 | December 14, 2018 13:30 | December 14, 2018 23:30 | 10h | 2,667 | 2,031 |
| 7 | February 7, 2018 13:45 | February 8, 2018 00:00 | 10h 15m | 2,599 | 1,552 |
| 8 | January 18, 2018 12:15 | January 18, 2018 19:15 | 7h | 2,531 | 835 |
| 9 | July 26, 2018 10:45 | July 27, 2018 05:15 | 18h 30m | 2,379 | 4,213 |
| 10 | November 28, 2018 02:45 | November 28, 2018 05:30 | 2h 45m | 2,338 | 742 |
Outage episodes by size in 2018: 207 reached 100+ customers, 37 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 Berkeley County reported on EIA Form 861 for 2018, 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 |
| South Carolina Public Service Authority | 2018 | 8.6 hrs | 1.10 | 21 min | 0.31 |
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 2018; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 162,211 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. Berkeley County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Berkeley County, SC annual power outage report, 2018, 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/2018/south-carolina/berkeley-county