County annual report · FIPS 45039
2025 Fairfield County, SC Power Outage Report
In 2025, customers in Fairfield County, SC went without power for an average of 4.8 hours, a total of 67K customer-hours (South Carolina average 3.0 hours). That ranks 13th worst of 46 South Carolina counties and 1565th 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 Fairfield 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 25, 2025 23:30 | June 26, 2025 17:00 | 17h 30m | 2,423 | 16K |
| 2 | June 8, 2025 01:15 | June 9, 2025 16:15 | 1d 15h | 2,077 | 18K |
| 3 | July 6, 2025 03:45 | July 6, 2025 09:15 | 5h 30m | 942 | 4,002 |
| 4 | August 1, 2025 21:30 | August 2, 2025 04:45 | 7h 15m | 921 | 442 |
| 5 | February 16, 2025 12:15 | February 17, 2025 10:00 | 21h 45m | 914 | 3,064 |
| 6 | January 11, 2025 00:30 | January 11, 2025 17:00 | 16h 30m | 837 | 2,420 |
| 7 | July 9, 2025 20:00 | July 10, 2025 04:30 | 8h 30m | 656 | 1,353 |
| 8 | December 15, 2025 10:45 | December 15, 2025 17:45 | 7h | 585 | 1,304 |
| 9 | November 8, 2025 23:45 | November 9, 2025 06:45 | 7h | 575 | 1,015 |
| 10 | June 18, 2025 02:00 | June 18, 2025 16:30 | 14h 30m | 510 | 957 |
Outage episodes by size in 2025: 40 reached 100+ customers, 2 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 Fairfield 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 Carolinas, LLC | 2024 | 78.6 hrs | 2.50 | 2.9 hrs | 1.26 |
| Dominion Energy South Carolina, Inc | 2024 | 31.8 hrs | 2.52 | 81 min | 1.19 |
| Newberry Electric Coop, Inc | 2021 | 2.6 hrs | - | 2.6 hrs | - |
| Fairfield Electric Coop, Inc | - | - | - | - | - |
| Town of Winnsboro - (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 ÷ 13,983 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. Fairfield County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Fairfield 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/fairfield-county