County annual report · FIPS 45011
2025 Barnwell County, SC Power Outage Report
In 2025, customers in Barnwell County, SC went without power for an average of 3.5 hours, a total of 37K customer-hours (South Carolina average 3.0 hours). That ranks 21st worst of 46 South Carolina counties and 1907th 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 Barnwell 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 | October 28, 2025 20:30 | October 28, 2025 21:45 | 1h 15m | 3,838 | 961 |
| 2 | May 12, 2025 18:30 | May 13, 2025 01:15 | 6h 45m | 2,222 | 6,557 |
| 3 | June 8, 2025 01:30 | June 8, 2025 09:15 | 7h 45m | 1,782 | 3,390 |
| 4 | June 14, 2025 18:15 | June 14, 2025 20:00 | 1h 45m | 1,518 | 2,279 |
| 5 | May 14, 2025 10:30 | May 14, 2025 12:30 | 2h | 1,240 | 2,325 |
| 6 | June 18, 2025 12:15 | June 18, 2025 15:15 | 3h | 1,160 | 347 |
| 7 | April 14, 2025 11:15 | April 14, 2025 12:30 | 1h 15m | 1,148 | 1,435 |
| 8 | July 1, 2025 19:45 | July 1, 2025 21:00 | 1h 15m | 889 | 1,111 |
| 9 | June 26, 2025 02:00 | June 26, 2025 16:00 | 14h | 655 | 1,884 |
| 10 | January 10, 2025 17:15 | January 11, 2025 08:45 | 15h 30m | 591 | 1,438 |
Outage episodes by size in 2025: 38 reached 100+ customers, 7 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 Barnwell 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 |
| Aiken Electric Coop Inc | 2024 | 132.4 hrs | - | 1.6 hrs | - |
| Edisto Electric Coop, Inc | 2024 | 39.2 hrs | - | 4.9 hrs | - |
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 ÷ 10,628 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. Barnwell County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Barnwell 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/barnwell-county