County annual report · FIPS 45011
2023 Barnwell County, SC Power Outage Report
In 2023, customers in Barnwell County, SC went without power for an average of 3.5 hours, a total of 37K customer-hours (South Carolina average 2.7 hours). That ranks 20th worst of 46 South Carolina counties and 1795th 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 Barnwell 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 | October 14, 2023 01:00 | October 14, 2023 01:45 | 45m | 3,835 | 959 |
| 2 | July 21, 2023 23:15 | July 22, 2023 01:30 | 2h 15m | 1,710 | 3,846 |
| 3 | February 6, 2023 07:00 | February 6, 2023 07:30 | 30m | 1,212 | 519 |
| 4 | August 27, 2023 23:00 | August 28, 2023 08:45 | 9h 45m | 968 | 3,444 |
| 5 | June 7, 2023 20:00 | June 8, 2023 05:00 | 9h | 946 | 6,604 |
| 6 | September 26, 2023 21:15 | September 27, 2023 01:00 | 3h 45m | 710 | 807 |
| 7 | August 6, 2023 22:15 | August 7, 2023 01:45 | 3h 30m | 563 | 848 |
| 8 | June 1, 2023 18:00 | June 1, 2023 19:45 | 1h 45m | 500 | 402 |
| 9 | August 30, 2023 18:45 | August 31, 2023 19:30 | 1d | 488 | 3,879 |
| 10 | August 2, 2023 04:00 | August 2, 2023 11:15 | 7h 15m | 458 | 2,160 |
Outage episodes by size in 2023: 26 reached 100+ customers, 3 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 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 |
| Aiken Electric Coop Inc | 2023 | 2.5 hrs | - | 1.9 hrs | - |
| Edisto Electric Coop, Inc | 2023 | 7.6 hrs | - | 5.6 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 2023; 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, 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/barnwell-county