County annual report · FIPS 45085
2016 Sumter County, SC Power Outage Report
In 2016, customers in Sumter County, SC went without power for an average of 40.5 hours, a total of 1.7M customer-hours (South Carolina average 13.0 hours). That ranks 8th worst of 46 South Carolina counties and 68th of 2,391 nationally.
Compared with SC, the US and 2015
Coverage line is EAGLE-I's share of South Carolina customers tracked each year.
Biggest outages in Sumter County, 2016
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | October 8, 2016 05:00 | October 8, 2016 17:45 | 12h 45m | 27,446 | 107K |
| 2 | October 8, 2016 22:30 | October 15, 2016 01:30 | 6d 3h | 26,512 | 1.4M |
| 3 | September 2, 2016 13:00 | September 4, 2016 22:15 | 2d 9h | 6,506 | 81K |
| 4 | August 13, 2016 03:30 | August 13, 2016 09:15 | 5h 45m | 4,040 | 8,731 |
| 5 | February 24, 2016 17:30 | February 26, 2016 00:00 | 1d 6h | 3,899 | 11K |
| 6 | July 5, 2016 21:30 | July 6, 2016 05:15 | 7h 45m | 3,032 | 6,383 |
| 7 | June 17, 2016 18:15 | June 18, 2016 09:30 | 15h 15m | 2,398 | 14K |
| 8 | June 25, 2016 20:00 | June 26, 2016 09:00 | 13h | 2,141 | 7,800 |
| 9 | February 4, 2016 07:45 | February 4, 2016 21:15 | 13h 30m | 2,094 | 4,238 |
| 10 | August 2, 2016 10:30 | August 2, 2016 12:30 | 2h | 1,996 | 999 |
Outage episodes by size in 2016: 75 reached 100+ customers, 20 reached 1,000+ customers, 2 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 2016, 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) | 2016 | 63.5 hrs | 3.55 | 3.0 hrs | 1.63 |
| Tri-County Electric Coop, Inc (SC) | 2016 | 70.3 hrs | 5.69 | 3.0 hrs | 2.16 |
| 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 2016; 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, 2016, 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/2016/south-carolina/sumter-county