County annual report · FIPS 45023
2019 Chester County, SC Power Outage Report
In 2019, customers in Chester County, SC went without power for an average of 2.5 hours, a total of 51K customer-hours (South Carolina average 4.8 hours). That ranks 32nd worst of 46 South Carolina counties and 1844th of 2,945 nationally.
Compared with SC, the US and 2018
Coverage line is EAGLE-I's share of South Carolina customers tracked each year.
Biggest outages in Chester County, 2019
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | August 18, 2019 04:30 | August 18, 2019 05:15 | 45m | 2,129 | 1,596 |
| 2 | October 9, 2019 21:15 | October 10, 2019 03:45 | 6h 30m | 876 | 1,106 |
| 3 | May 24, 2019 17:45 | May 25, 2019 02:30 | 8h 45m | 848 | 1,735 |
| 4 | August 19, 2019 19:15 | August 20, 2019 02:45 | 7h 30m | 847 | 877 |
| 5 | June 13, 2019 00:30 | June 13, 2019 00:45 | 15m | 837 | 209 |
| 6 | July 17, 2019 22:30 | July 18, 2019 00:00 | 1h 30m | 682 | 513 |
| 7 | September 9, 2019 13:30 | September 10, 2019 10:15 | 20h 45m | 682 | 2,067 |
| 8 | April 9, 2019 18:15 | April 9, 2019 21:15 | 3h | 603 | 945 |
| 9 | January 20, 2019 18:00 | January 20, 2019 19:15 | 1h 15m | 578 | 522 |
| 10 | January 28, 2019 05:00 | January 28, 2019 23:15 | 18h 15m | 491 | 3,854 |
Outage episodes by size in 2019: 45 reached 100+ customers, 1 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 Chester County reported on EIA Form 861 for 2019, 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 |
| Duke Energy | - | - | - | - | - |
| 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 2019; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 20,548 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. Chester County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Chester County, SC annual power outage report, 2019, 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/2019/south-carolina/chester-county