County annual report · FIPS 45057
2021 Lancaster County, SC Power Outage Report
In 2021, customers in Lancaster County, SC went without power for an average of 2.1 hours, a total of 109K customer-hours (South Carolina average 2.1 hours). That ranks 26th worst of 46 South Carolina counties and 2187th of 2,974 nationally.
Compared with SC, the US and 2020
Coverage line is EAGLE-I's share of South Carolina customers tracked each year.
Biggest outages in Lancaster County, 2021
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | July 14, 2021 20:45 | July 15, 2021 04:45 | 8h | 12,378 | 11K |
| 2 | July 11, 2021 04:45 | July 11, 2021 08:15 | 3h 30m | 3,887 | 14K |
| 3 | August 20, 2021 05:30 | August 20, 2021 12:45 | 7h 15m | 2,892 | 1,584 |
| 4 | July 19, 2021 04:45 | July 19, 2021 05:45 | 1h | 2,580 | 1,719 |
| 5 | June 4, 2021 23:45 | June 5, 2021 04:30 | 4h 45m | 2,507 | 3,219 |
| 6 | July 19, 2021 00:30 | July 19, 2021 03:00 | 2h 30m | 1,974 | 4,366 |
| 7 | November 12, 2021 00:00 | November 12, 2021 02:30 | 2h 30m | 1,934 | 4,350 |
| 8 | March 9, 2021 21:15 | March 10, 2021 19:45 | 22h 30m | 1,889 | 2,968 |
| 9 | March 28, 2021 16:45 | March 28, 2021 21:45 | 5h | 1,692 | 3,405 |
| 10 | November 8, 2021 19:30 | November 9, 2021 05:45 | 10h 15m | 1,617 | 1,275 |
Outage episodes by size in 2021: 64 reached 100+ customers, 16 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 Lancaster County reported on EIA Form 861 for 2021, 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 | 2021 | 3.5 hrs | 1.20 | 2.5 hrs | 1.10 |
| York Electric Coop Inc | 2021 | 76 min | 0.75 | 67 min | 0.66 |
| Lynches River Elec Coop, Inc | 2021 | 3.5 hrs | 2.50 | 3.2 hrs | 2.30 |
| Duke Energy | - | - | - | - | - |
| Fairfield Electric Coop, Inc | - | - | - | - | - |
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 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 52,274 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. Lancaster County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Lancaster County, SC annual power outage report, 2021, 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/2021/south-carolina/lancaster-county