County annual report · FIPS 45023
2017 Chester County, SC Power Outage Report
In 2017, customers in Chester County, SC went without power for an average of 4.5 hours, a total of 92K customer-hours (South Carolina average 4.4 hours). That ranks 21st worst of 46 South Carolina counties and 1034th of 2,786 nationally.
Compared with SC, the US and 2016
Coverage line is EAGLE-I's share of South Carolina customers tracked each year.
Biggest outages in Chester County, 2017
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | September 11, 2017 14:15 | September 14, 2017 20:15 | 3d 6h | 2,178 | 53K |
| 2 | April 6, 2017 13:30 | April 7, 2017 09:15 | 19h 45m | 1,638 | 2,878 |
| 3 | September 30, 2017 11:45 | September 30, 2017 17:45 | 6h | 1,472 | 1,980 |
| 4 | January 7, 2017 10:15 | January 8, 2017 00:30 | 14h 15m | 1,220 | 2,262 |
| 5 | July 26, 2017 20:15 | July 26, 2017 21:30 | 1h 15m | 1,167 | 876 |
| 6 | March 2, 2017 01:30 | March 2, 2017 20:15 | 18h 45m | 891 | 534 |
| 7 | March 30, 2017 22:15 | March 31, 2017 21:45 | 23h 30m | 831 | 1,818 |
| 8 | June 2, 2017 13:30 | June 2, 2017 15:45 | 2h 15m | 824 | 626 |
| 9 | February 16, 2017 01:15 | February 16, 2017 14:45 | 13h 30m | 590 | 1,525 |
| 10 | January 12, 2017 12:30 | January 13, 2017 00:30 | 12h | 499 | 1,387 |
Outage episodes by size in 2017: 34 reached 100+ customers, 5 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 2017, 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 | 2017 | 8.8 hrs | 1.52 | 3.1 hrs | 1.11 |
| York Electric Coop Inc | 2017 | 2.1 hrs | 0.77 | 1.6 hrs | - |
| 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 n/a of South Carolina's customers in 2017; 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, 2017, 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/2017/south-carolina/chester-county