County annual report · FIPS 45005
2025 Allendale County, SC Power Outage Report
In 2025, customers in Allendale County, SC went without power for an average of 5.5 hours, a total of 26K customer-hours (South Carolina average 3.0 hours). That ranks 10th worst of 46 South Carolina counties and 1371st 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 Allendale 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 | May 12, 2025 03:45 | May 12, 2025 23:45 | 20h | 2,006 | 2,831 |
| 2 | June 26, 2025 02:15 | June 26, 2025 15:30 | 13h 15m | 1,101 | 2,166 |
| 3 | September 25, 2025 17:30 | September 25, 2025 19:45 | 2h 15m | 1,029 | 2,103 |
| 4 | October 23, 2025 04:00 | October 23, 2025 07:15 | 3h 15m | 1,024 | 3,328 |
| 5 | March 15, 2025 02:00 | March 15, 2025 03:45 | 1h 45m | 1,010 | 1,252 |
| 6 | October 12, 2025 02:00 | October 12, 2025 05:45 | 3h 45m | 602 | 2,258 |
| 7 | April 23, 2025 19:30 | April 23, 2025 23:30 | 4h | 450 | 635 |
| 8 | July 5, 2025 16:30 | July 5, 2025 18:15 | 1h 45m | 435 | 761 |
| 9 | May 14, 2025 14:45 | May 14, 2025 16:30 | 1h 45m | 350 | 299 |
| 10 | November 9, 2025 05:45 | November 9, 2025 08:15 | 2h 30m | 323 | 727 |
Outage episodes by size in 2025: 24 reached 100+ customers, 5 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 Allendale 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 | - |
| Palmetto Electric Coop Inc | 2024 | 10.5 hrs | 2.44 | 32 min | 0.69 |
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 ÷ 4,639 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. Allendale County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Allendale 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/allendale-county