County annual report · FIPS 45069
2025 Marlboro County, SC Power Outage Report
In 2025, customers in Marlboro County, SC went without power for an average of 1.1 hours, a total of 16K customer-hours (South Carolina average 3.0 hours). That ranks 46th worst of 46 South Carolina counties and 2731st 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 Marlboro 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 | December 29, 2025 13:30 | December 29, 2025 14:15 | 45m | 1,121 | 841 |
| 2 | February 20, 2025 02:45 | February 20, 2025 09:00 | 6h 15m | 747 | 1,944 |
| 3 | August 15, 2025 17:30 | August 15, 2025 19:45 | 2h 15m | 734 | 1,203 |
| 4 | July 28, 2025 07:15 | July 28, 2025 09:15 | 2h | 729 | 725 |
| 5 | July 29, 2025 19:45 | July 30, 2025 12:00 | 16h 15m | 504 | 457 |
| 6 | November 26, 2025 14:00 | November 26, 2025 17:15 | 3h 15m | 461 | 578 |
| 7 | September 29, 2025 12:45 | September 29, 2025 15:00 | 2h 15m | 460 | 234 |
| 8 | April 7, 2025 18:15 | April 8, 2025 02:15 | 8h | 408 | 244 |
| 9 | November 14, 2025 12:15 | November 14, 2025 17:15 | 5h | 401 | 956 |
| 10 | September 28, 2025 15:45 | September 28, 2025 20:45 | 5h | 343 | 104 |
Outage episodes by size in 2025: 19 reached 100+ customers, 1 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 Marlboro 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 |
|---|---|---|---|---|---|
| Duke Energy Progress - (NC) | 2024 | 17.2 hrs | 1.70 | 2.2 hrs | 1.22 |
| MPD Electric Cooperative | 2024 | 3.5 hrs | 1.63 | 1.5 hrs | 1.00 |
| Duke Energy | - | - | - | - | - |
| City of Bennettsville - (SC) | - | - | - | - | - |
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 ÷ 14,959 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. Marlboro County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Marlboro 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/marlboro-county