County annual report · FIPS 45023
2015 Chester County, SC Power Outage Report
In 2015, customers in Chester County, SC went without power for an average of 2.4 hours, a total of 49K customer-hours (South Carolina average 2.5 hours). That ranks 20th worst of 46 South Carolina counties and 1105th of 2,484 nationally.
Compared with SC, the US
Coverage line is EAGLE-I's share of South Carolina customers tracked each year.
Biggest outages in Chester County, 2015
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 5, 2015 18:15 | August 6, 2015 01:00 | 6h 45m | 1,163 | 3,000 |
| 2 | February 17, 2015 04:00 | February 18, 2015 00:30 | 20h 30m | 1,029 | 6,647 |
| 3 | April 18, 2015 11:30 | April 18, 2015 13:30 | 2h | 887 | 1,552 |
| 4 | October 3, 2015 07:30 | October 5, 2015 11:00 | 2d 3h | 828 | 12K |
| 5 | September 8, 2015 20:15 | September 9, 2015 00:15 | 4h | 823 | 2,468 |
| 6 | March 24, 2015 13:30 | March 24, 2015 16:45 | 3h 15m | 819 | 666 |
| 7 | June 18, 2015 23:30 | June 19, 2015 16:00 | 16h 30m | 817 | 2,412 |
| 8 | January 24, 2015 13:30 | January 24, 2015 16:45 | 3h 15m | 767 | 1,845 |
| 9 | May 14, 2015 22:00 | May 15, 2015 00:00 | 2h | 695 | 1,108 |
| 10 | May 14, 2015 15:15 | May 14, 2015 19:15 | 4h | 677 | 1,456 |
Outage episodes by size in 2015: 26 reached 100+ customers, 2 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 2015, 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 | 2015 | 5.3 hrs | 1.29 | 2.6 hrs | 1.02 |
| Duke Energy | - | - | - | - | - |
| Fairfield Electric Coop, Inc | - | - | - | - | - |
| York 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 2015; 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, 2015, 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/2015/south-carolina/chester-county