County annual report · FIPS 45015
2025 Berkeley County, SC Power Outage Report
In 2025, customers in Berkeley County, SC went without power for an average of 2.6 hours, a total of 428K customer-hours (South Carolina average 3.0 hours). That ranks 32nd worst of 46 South Carolina counties and 2186th of 3,000 nationally.
Compared with SC, the US and 2024
Coverage line is EAGLE-I's share of South Carolina customers tracked each year.
Biggest outages in Berkeley County, 2025
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | June 9, 2025 10:00 | June 10, 2025 05:45 | 19h 45m | 20,654 | 36K |
| 2 | March 5, 2025 15:00 | March 6, 2025 01:45 | 10h 45m | 18,917 | 14K |
| 3 | March 20, 2025 23:30 | March 21, 2025 05:30 | 6h | 17,381 | 12K |
| 4 | September 19, 2025 04:45 | September 19, 2025 06:30 | 1h 45m | 13,808 | 22K |
| 5 | October 15, 2025 11:15 | October 15, 2025 22:15 | 11h | 12,514 | 6,362 |
| 6 | June 25, 2025 10:45 | June 26, 2025 17:00 | 1d 6h | 7,457 | 9,879 |
| 7 | April 21, 2025 10:45 | April 24, 2025 22:30 | 3d 11h | 7,081 | 9,469 |
| 8 | January 23, 2025 13:15 | January 23, 2025 22:00 | 8h 45m | 6,743 | 5,275 |
| 9 | April 7, 2025 11:15 | April 7, 2025 20:30 | 9h 15m | 5,937 | 4,466 |
| 10 | August 16, 2025 13:30 | August 16, 2025 21:15 | 7h 45m | 5,569 | 8,679 |
Outage episodes by size in 2025: 307 reached 100+ customers, 96 reached 1,000+ customers, 5 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 2025, 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 | 2024 | 31.8 hrs | 2.52 | 81 min | 1.19 |
| Edisto Electric Coop, Inc | 2024 | 39.2 hrs | - | 4.9 hrs | - |
| Berkeley Electric Coop Inc | 2024 | 4.9 hrs | 1.59 | 89 min | 0.94 |
| South Carolina Public Service Authority | 2024 | 58 min | 0.69 | 55 min | 0.65 |
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 2025; 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, 2025, 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/2025/south-carolina/berkeley-county