County annual report · FIPS 45017
2018 Calhoun County, SC Power Outage Report
In 2018, customers in Calhoun County, SC went without power for an average of 4.0 hours, a total of 37K customer-hours (South Carolina average 5.2 hours). That ranks 28th worst of 46 South Carolina counties and 1259th 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 Calhoun 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 | October 11, 2018 06:15 | October 12, 2018 18:00 | 1d 11h | 2,264 | 15K |
| 2 | August 7, 2018 00:00 | August 8, 2018 18:15 | 1d 18h | 1,958 | 621 |
| 3 | June 25, 2018 00:45 | June 25, 2018 06:15 | 5h 30m | 1,174 | 3,063 |
| 4 | June 25, 2018 18:15 | June 26, 2018 16:00 | 21h 45m | 916 | 2,920 |
| 5 | May 23, 2018 13:30 | May 23, 2018 14:30 | 1h | 783 | 201 |
| 6 | June 2, 2018 00:00 | June 2, 2018 02:00 | 2h | 742 | 761 |
| 7 | April 15, 2018 17:00 | April 16, 2018 03:15 | 10h 15m | 609 | 1,822 |
| 8 | January 13, 2018 04:45 | January 13, 2018 09:15 | 4h 30m | 462 | 2,079 |
| 9 | May 24, 2018 14:15 | May 24, 2018 15:00 | 45m | 356 | 178 |
| 10 | June 14, 2018 18:00 | June 14, 2018 19:45 | 1h 45m | 308 | 246 |
Outage episodes by size in 2018: 30 reached 100+ customers, 3 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 Calhoun 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 |
|---|---|---|---|---|---|
| Dominion Energy South Carolina, Inc | 2018 | 2.8 hrs | 1.80 | 1.6 hrs | 1.37 |
| Aiken Electric Coop Inc | 2018 | 4.0 hrs | - | 90 min | - |
| Tri-County Electric Coop, Inc (SC) | 2018 | 6.4 hrs | 3.24 | 2.9 hrs | 2.31 |
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 ÷ 9,147 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. Calhoun County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Calhoun 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/calhoun-county