County annual report · FIPS 45017
2023 Calhoun County, SC Power Outage Report
In 2023, customers in Calhoun County, SC went without power for an average of 2.9 hours, a total of 27K customer-hours (South Carolina average 2.7 hours). That ranks 26th worst of 46 South Carolina counties and 1975th of 2,977 nationally.
Compared with SC, the US and 2022
Coverage line is EAGLE-I's share of South Carolina customers tracked each year.
Biggest outages in Calhoun County, 2023
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | August 7, 2023 21:15 | August 8, 2023 07:00 | 9h 45m | 1,348 | 3,550 |
| 2 | May 14, 2023 01:15 | May 14, 2023 05:00 | 3h 45m | 1,246 | 1,064 |
| 3 | August 30, 2023 22:45 | August 31, 2023 19:15 | 20h 30m | 1,148 | 3,497 |
| 4 | December 11, 2023 00:00 | December 11, 2023 08:15 | 8h 15m | 836 | 1,917 |
| 5 | July 10, 2023 11:15 | July 10, 2023 15:00 | 3h 45m | 772 | 590 |
| 6 | August 6, 2023 00:30 | August 7, 2023 11:15 | 1d 10h | 512 | 2,018 |
| 7 | March 27, 2023 04:00 | March 27, 2023 11:45 | 7h 45m | 492 | 544 |
| 8 | March 4, 2023 04:00 | March 4, 2023 10:15 | 6h 15m | 486 | 581 |
| 9 | April 12, 2023 03:00 | April 12, 2023 06:00 | 3h | 450 | 588 |
| 10 | November 13, 2023 17:00 | November 13, 2023 17:30 | 30m | 319 | 155 |
Outage episodes by size in 2023: 32 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 2023, 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 | 2023 | 2.0 hrs | 1.48 | 90 min | 1.32 |
| Aiken Electric Coop Inc | 2023 | 2.5 hrs | - | 1.9 hrs | - |
| Tri-County Electric Coop, Inc (SC) | 2023 | 7.1 hrs | 3.75 | 3.3 hrs | 2.43 |
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 2023; 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, 2023, 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/2023/south-carolina/calhoun-county