County annual report · FIPS 45091
2025 York County, SC Power Outage Report
In 2025, customers in York County, SC went without power for an average of 1.7 hours, a total of 296K customer-hours (South Carolina average 3.0 hours). That ranks 41st worst of 46 South Carolina counties and 2536th 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 York 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 | August 5, 2025 04:30 | August 6, 2025 03:00 | 22h 30m | 4,971 | 16K |
| 2 | November 5, 2025 15:15 | November 6, 2025 10:00 | 18h 45m | 4,667 | 2,500 |
| 3 | June 25, 2025 11:30 | June 26, 2025 13:00 | 1d 1h | 4,521 | 36K |
| 4 | August 13, 2025 08:00 | August 14, 2025 07:00 | 23h | 4,191 | 4,786 |
| 5 | November 5, 2025 11:30 | November 5, 2025 13:15 | 1h 45m | 4,075 | 3,790 |
| 6 | April 30, 2025 14:15 | May 6, 2025 03:00 | 5d 12h | 3,442 | 12K |
| 7 | August 1, 2025 19:30 | August 2, 2025 07:45 | 12h 15m | 3,414 | 8,668 |
| 8 | August 11, 2025 03:00 | August 11, 2025 10:30 | 7h 30m | 3,152 | 2,688 |
| 9 | November 12, 2025 12:45 | November 12, 2025 15:15 | 2h 30m | 2,847 | 714 |
| 10 | July 30, 2025 12:00 | July 30, 2025 14:45 | 2h 45m | 2,731 | 699 |
Outage episodes by size in 2025: 135 reached 100+ customers, 38 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 York 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 |
| York Electric Coop Inc | 2024 | 16.3 hrs | 2.20 | 89 min | 1.69 |
| City of Rock Hill - (SC) | 2024 | 10.1 hrs | 2.12 | 90 min | 1.26 |
| Duke Energy | - | - | - | - | - |
| Broad River Electric Coop, Inc | - | - | - | - | - |
| Fairfield Electric Coop, Inc | - | - | - | - | - |
| Lockhart Power Co | - | - | - | - | - |
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 ÷ 173,488 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. York County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), York 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/york-county