County annual report · FIPS 45085
2015 Sumter County, SC Power Outage Report
In 2015, customers in Sumter County, SC went without power for an average of 2.5 hours, a total of 106K customer-hours (South Carolina average 2.5 hours). That ranks 18th worst of 46 South Carolina counties and 1058th 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 Sumter 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 | February 20, 2015 00:30 | February 20, 2015 05:00 | 4h 30m | 7,167 | 14K |
| 2 | June 24, 2015 23:45 | June 25, 2015 22:15 | 22h 30m | 2,006 | 4,075 |
| 3 | May 14, 2015 16:30 | May 15, 2015 02:45 | 10h 15m | 1,922 | 4,806 |
| 4 | April 19, 2015 22:15 | April 20, 2015 02:30 | 4h 15m | 1,328 | 2,320 |
| 5 | June 30, 2015 20:45 | July 1, 2015 05:15 | 8h 30m | 1,319 | 2,050 |
| 6 | August 17, 2015 18:00 | August 17, 2015 19:30 | 1h 30m | 1,306 | 365 |
| 7 | January 3, 2015 04:30 | January 3, 2015 16:00 | 11h 30m | 1,304 | 4,412 |
| 8 | August 7, 2015 09:00 | August 7, 2015 17:30 | 8h 30m | 1,189 | 1,278 |
| 9 | December 3, 2015 18:30 | December 3, 2015 20:30 | 2h | 1,153 | 2,302 |
| 10 | January 14, 2015 08:30 | January 14, 2015 17:00 | 8h 30m | 1,121 | 3,930 |
Outage episodes by size in 2015: 61 reached 100+ customers, 12 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 Sumter 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 Progress - (NC) | 2015 | 4.8 hrs | 1.90 | 3.0 hrs | 1.65 |
| Tri-County Electric Coop, Inc (SC) | 2015 | 20 min | 1.78 | 9 min | 0.39 |
| Duke Energy | - | - | - | - | - |
| Black River Electric Coop, Inc - (SC) | - | - | - | - | - |
| City of Camden | - | - | - | - | - |
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 ÷ 42,515 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. Sumter County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Sumter 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/sumter-county