County annual report · FIPS 45015
2023 Berkeley County, SC Power Outage Report
In 2023, customers in Berkeley County, SC went without power for an average of 1.2 hours, a total of 195K customer-hours (South Carolina average 2.7 hours). That ranks 44th worst of 46 South Carolina counties and 2594th of 2,977 nationally.
Compared with SC, the US and 2022
Coverage line is EAGLE-I's share of South Carolina customers tracked each year.
Biggest outages in Berkeley County, 2023
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | August 17, 2023 10:45 | August 18, 2023 04:30 | 17h 45m | 6,808 | 9,772 |
| 2 | January 11, 2023 13:00 | January 11, 2023 22:45 | 9h 45m | 5,419 | 3,687 |
| 3 | February 22, 2023 13:00 | February 23, 2023 01:00 | 12h | 4,120 | 1,907 |
| 4 | June 8, 2023 12:15 | June 8, 2023 20:15 | 8h | 4,111 | 1,317 |
| 5 | March 15, 2023 12:30 | March 15, 2023 23:30 | 11h | 3,949 | 3,428 |
| 6 | April 25, 2023 08:45 | April 25, 2023 17:00 | 8h 15m | 3,602 | 2,611 |
| 7 | August 18, 2023 14:15 | August 18, 2023 21:45 | 7h 30m | 3,596 | 984 |
| 8 | April 13, 2023 17:00 | April 14, 2023 02:45 | 9h 45m | 3,210 | 3,536 |
| 9 | July 11, 2023 04:45 | July 11, 2023 21:45 | 17h | 3,066 | 3,378 |
| 10 | March 1, 2023 22:00 | March 1, 2023 22:30 | 30m | 3,007 | 1,504 |
Outage episodes by size in 2023: 179 reached 100+ customers, 43 reached 1,000+ customers, 0 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 2023, 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 | 2023 | 2.0 hrs | 1.48 | 90 min | 1.32 |
| Edisto Electric Coop, Inc | 2023 | 7.6 hrs | - | 5.6 hrs | - |
| Berkeley Electric Coop Inc | 2023 | 1.8 hrs | 1.19 | 1.6 hrs | 1.10 |
| South Carolina Public Service Authority | 2023 | 67 min | 0.85 | 47 min | 0.62 |
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 2023; 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, 2023, 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/2023/south-carolina/berkeley-county