County annual report · FIPS 45091
2023 York County, SC Power Outage Report
In 2023, customers in York County, SC went without power for an average of 1.5 hours, a total of 255K customer-hours (South Carolina average 2.7 hours). That ranks 41st worst of 46 South Carolina counties and 2505th of 2,977 nationally.
Compared with SC, the US and 2022
Coverage line is EAGLE-I's share of South Carolina customers tracked each year.
Biggest outages in York County, 2023
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | February 23, 2023 13:45 | February 23, 2023 15:45 | 2h | 12,378 | 11K |
| 2 | June 26, 2023 02:30 | June 26, 2023 07:15 | 4h 45m | 10,967 | 10K |
| 3 | April 7, 2023 11:15 | April 8, 2023 08:00 | 20h 45m | 9,946 | 17K |
| 4 | April 18, 2023 11:00 | April 18, 2023 13:45 | 2h 45m | 8,041 | 9,227 |
| 5 | November 29, 2023 13:00 | November 29, 2023 21:30 | 8h 30m | 3,242 | 9,528 |
| 6 | November 16, 2023 12:30 | November 16, 2023 12:45 | 15m | 2,847 | 712 |
| 7 | November 28, 2023 14:15 | November 28, 2023 21:15 | 7h | 2,714 | 1,817 |
| 8 | August 27, 2023 15:15 | August 28, 2023 07:30 | 16h 15m | 2,338 | 3,421 |
| 9 | January 12, 2023 23:30 | January 13, 2023 10:30 | 11h | 2,034 | 9,849 |
| 10 | February 13, 2023 19:30 | February 14, 2023 07:30 | 12h | 1,960 | 7,052 |
Outage episodes by size in 2023: 117 reached 100+ customers, 38 reached 1,000+ customers, 2 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 2023, 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 | 2023 | 5.0 hrs | 1.68 | 3.3 hrs | 1.52 |
| York Electric Coop Inc | 2023 | 1.6 hrs | 0.82 | 89 min | 0.81 |
| City of Rock Hill - (SC) | 2023 | 53 min | 0.78 | 52 min | 0.74 |
| 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 2023; 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, 2023, 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/2023/south-carolina/york-county