County annual report · FIPS 45091
2018 York County, SC Power Outage Report
In 2018, customers in York County, SC went without power for an average of 1.6 hours, a total of 283K customer-hours (South Carolina average 5.2 hours). That ranks 42nd worst of 46 South Carolina counties and 2030th of 2,798 nationally.
Compared with SC, the US and 2017
Coverage line is EAGLE-I's share of South Carolina customers tracked each year.
Biggest outages in York County, 2018
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | October 11, 2018 12:30 | October 13, 2018 00:30 | 1d 12h | 6,587 | 36K |
| 2 | December 18, 2018 13:30 | December 18, 2018 16:45 | 3h 15m | 5,810 | 7,775 |
| 3 | November 14, 2018 04:00 | November 14, 2018 06:15 | 2h 15m | 3,798 | 6,029 |
| 4 | September 15, 2018 04:00 | September 18, 2018 18:45 | 3d 14h | 3,448 | 56K |
| 5 | March 2, 2018 17:15 | March 3, 2018 03:45 | 10h 30m | 3,114 | 5,742 |
| 6 | April 9, 2018 02:15 | April 9, 2018 03:15 | 1h | 3,105 | 3,105 |
| 7 | February 11, 2018 13:15 | February 11, 2018 15:15 | 2h | 3,097 | 3,233 |
| 8 | October 29, 2018 14:45 | October 30, 2018 00:45 | 10h | 2,621 | 3,543 |
| 9 | May 15, 2018 16:30 | May 18, 2018 04:30 | 2d 12h | 2,355 | 3,350 |
| 10 | October 22, 2018 07:15 | October 22, 2018 10:30 | 3h 15m | 1,861 | 3,266 |
Outage episodes by size in 2018: 74 reached 100+ customers, 29 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 2018, 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 | 2018 | 13.1 hrs | 1.81 | 3.7 hrs | 1.19 |
| York Electric Coop Inc | 2018 | 2.1 hrs | 1.22 | 83 min | 0.91 |
| City of Rock Hill - (SC) | 2018 | 2.1 hrs | 1.64 | 1.8 hrs | 1.56 |
| 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 99% of South Carolina's customers in 2018; 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, 2018, 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/2018/south-carolina/york-county