County annual report · FIPS 45091
2024 York County, SC Power Outage Report
In 2024, customers in York County, SC went without power for an average of 14.4 hours, a total of 2.5M customer-hours (South Carolina average 50.1 hours). That ranks 26th worst of 46 South Carolina counties and 680th of 2,990 nationally.
Compared with SC, the US and 2023
Coverage line is EAGLE-I's share of South Carolina customers tracked each year.
Biggest outages in York County, 2024
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | September 26, 2024 18:30 | October 3, 2024 07:30 | 6d 13h | 59,979 | 2.1M |
| 2 | April 20, 2024 20:15 | April 22, 2024 09:00 | 1d 12h | 9,377 | 84K |
| 3 | October 29, 2024 10:30 | October 29, 2024 19:45 | 9h 15m | 8,219 | 9,436 |
| 4 | January 9, 2024 14:00 | January 11, 2024 00:45 | 1d 10h | 5,128 | 17K |
| 5 | May 8, 2024 12:45 | May 9, 2024 05:30 | 16h 45m | 5,062 | 19K |
| 6 | August 8, 2024 08:15 | August 12, 2024 12:30 | 4d 4h | 5,011 | 33K |
| 7 | July 16, 2024 00:00 | July 17, 2024 00:00 | 1d | 4,717 | 23K |
| 8 | December 29, 2024 14:15 | December 30, 2024 17:15 | 1d 3h | 4,051 | 18K |
| 9 | August 31, 2024 01:00 | September 1, 2024 08:30 | 1d 7h | 3,573 | 27K |
| 10 | July 1, 2024 10:00 | July 2, 2024 00:15 | 14h 15m | 3,142 | 2,064 |
Outage episodes by size in 2024: 122 reached 100+ customers, 45 reached 1,000+ customers, 1 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 2024, 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 2024; 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, 2024, 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/2024/south-carolina/york-county