County annual report · FIPS 45087
2018 Union County, SC Power Outage Report
In 2018, customers in Union County, SC went without power for an average of 0.7 hours, a total of 16K customer-hours (South Carolina average 5.2 hours). That ranks 46th worst of 46 South Carolina counties and 2421st of 2,798 nationally.
Compared with SC, the US and 2017
Coverage line is EAGLE-I's share of South Carolina customers tracked each year.
Biggest outages in Union County, 2018
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | January 7, 2018 11:30 | January 7, 2018 15:15 | 3h 45m | 1,421 | 1,131 |
| 2 | July 23, 2018 20:00 | July 23, 2018 21:15 | 1h 15m | 847 | 1,059 |
| 3 | June 25, 2018 23:00 | June 26, 2018 10:30 | 11h 30m | 681 | 2,997 |
| 4 | June 23, 2018 19:30 | June 23, 2018 21:00 | 1h 30m | 680 | 354 |
| 5 | October 11, 2018 11:00 | October 12, 2018 02:30 | 15h 30m | 667 | 2,230 |
| 6 | June 1, 2018 23:15 | June 2, 2018 09:00 | 9h 45m | 509 | 1,488 |
| 7 | October 17, 2018 15:30 | October 17, 2018 17:00 | 1h 30m | 499 | 749 |
| 8 | February 11, 2018 19:00 | February 11, 2018 20:45 | 1h 45m | 249 | 433 |
| 9 | September 12, 2018 09:15 | September 12, 2018 14:30 | 5h 15m | 246 | 328 |
| 10 | June 24, 2018 22:30 | June 25, 2018 04:45 | 6h 15m | 221 | 419 |
Outage episodes by size in 2018: 19 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 Union County reported on EIA Form 861 for 2018, 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 |
| Dominion Energy South Carolina, Inc | 2018 | 2.8 hrs | 1.80 | 1.6 hrs | 1.37 |
| Laurens Electric Coop, Inc | 2018 | 1.7 hrs | 1.74 | 87 min | 1.31 |
| Broad River Electric Coop, Inc | - | - | - | - | - |
| Lockhart Power Co | - | - | - | - | - |
| City of Union - (SC) | - | - | - | - | - |
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 2018; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 21,940 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. Union County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Union County, SC annual power outage report, 2018, 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/2018/south-carolina/union-county