County annual report · FIPS 45091
2020 York County, SC Power Outage Report
In 2020, customers in York County, SC went without power for an average of 2.1 hours, a total of 373K customer-hours (South Carolina average 5.7 hours). That ranks 38th worst of 46 South Carolina counties and 2189th of 3,019 nationally.
Compared with SC, the US and 2019
Coverage line is EAGLE-I's share of South Carolina customers tracked each year.
Biggest outages in York County, 2020
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | April 6, 2020 14:15 | April 15, 2020 21:45 | 9d 7h | 13,769 | 118K |
| 2 | October 29, 2020 12:45 | October 31, 2020 01:00 | 1d 12h | 7,992 | 66K |
| 3 | May 22, 2020 13:00 | May 25, 2020 04:45 | 2d 15h | 6,296 | 82K |
| 4 | November 27, 2020 13:00 | November 27, 2020 16:15 | 3h 15m | 3,039 | 3,041 |
| 5 | September 3, 2020 16:30 | September 4, 2020 02:15 | 9h 45m | 2,188 | 10K |
| 6 | February 6, 2020 05:15 | February 8, 2020 18:45 | 2d 13h | 1,950 | 17K |
| 7 | September 1, 2020 20:30 | September 2, 2020 00:15 | 3h 45m | 1,612 | 3,416 |
| 8 | August 1, 2020 03:00 | August 1, 2020 12:00 | 9h | 1,364 | 10K |
| 9 | December 1, 2020 15:45 | December 2, 2020 01:45 | 10h | 1,192 | 2,122 |
| 10 | December 16, 2020 08:45 | December 16, 2020 23:45 | 15h | 1,074 | 716 |
Outage episodes by size in 2020: 61 reached 100+ customers, 10 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 2020, 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 | 2020 | 11.2 hrs | 1.71 | 3.1 hrs | 1.18 |
| York Electric Coop Inc | 2020 | 3.4 hrs | 0.99 | 72 min | 0.69 |
| City of Rock Hill - (SC) | 2020 | 2.3 hrs | 1.22 | 70 min | 0.90 |
| 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 2020; 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, 2020, 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/2020/south-carolina/york-county