County annual report · FIPS 45087
2020 Union County, SC Power Outage Report
In 2020, customers in Union County, SC went without power for an average of 0.6 hours, a total of 14K customer-hours (South Carolina average 5.7 hours). That ranks 46th worst of 46 South Carolina counties and 2790th of 3,019 nationally.
Compared with SC, the US and 2019
Coverage line is EAGLE-I's share of South Carolina customers tracked each year.
Biggest outages in Union County, 2020
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 12, 2020 02:45 | January 12, 2020 14:30 | 11h 45m | 784 | 2,119 |
| 2 | February 8, 2020 00:15 | February 8, 2020 01:45 | 1h 30m | 555 | 800 |
| 3 | February 11, 2020 13:45 | February 11, 2020 16:15 | 2h 30m | 555 | 1,248 |
| 4 | April 13, 2020 12:45 | April 14, 2020 03:15 | 14h 30m | 486 | 2,502 |
| 5 | February 6, 2020 22:45 | February 7, 2020 22:45 | 1d | 474 | 1,600 |
| 6 | August 26, 2020 12:15 | August 26, 2020 13:15 | 1h | 313 | 236 |
| 7 | October 29, 2020 13:00 | October 29, 2020 22:45 | 9h 45m | 245 | 929 |
| 8 | September 7, 2020 17:45 | September 7, 2020 20:45 | 3h | 164 | 492 |
| 9 | March 6, 2020 19:15 | March 6, 2020 22:45 | 3h 30m | 142 | 455 |
| 10 | February 6, 2020 16:30 | February 6, 2020 21:30 | 5h | 100 | 247 |
Outage episodes by size in 2020: 10 reached 100+ customers, 0 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 2020, 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 | 2020 | 11.2 hrs | 1.71 | 3.1 hrs | 1.18 |
| Dominion Energy South Carolina, Inc | 2020 | 2.4 hrs | 1.40 | 88 min | 1.17 |
| Laurens Electric Coop, Inc | 2020 | 2.9 hrs | 1.44 | 1.9 hrs | 1.19 |
| 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 2020; 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, 2020, 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/2020/south-carolina/union-county