County annual report · FIPS 45017
2020 Calhoun County, SC Power Outage Report
In 2020, customers in Calhoun County, SC went without power for an average of 3.3 hours, a total of 30K customer-hours (South Carolina average 5.7 hours). That ranks 27th worst of 46 South Carolina counties and 1779th 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 Calhoun 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 | December 25, 2020 00:30 | December 25, 2020 07:45 | 7h 15m | 2,049 | 7,630 |
| 2 | February 20, 2020 04:30 | February 20, 2020 09:30 | 5h | 1,184 | 1,913 |
| 3 | February 7, 2020 10:00 | February 7, 2020 17:15 | 7h 15m | 913 | 1,159 |
| 4 | February 13, 2020 17:30 | February 13, 2020 19:45 | 2h 15m | 899 | 739 |
| 5 | September 8, 2020 03:30 | September 8, 2020 05:00 | 1h 30m | 655 | 669 |
| 6 | April 23, 2020 18:30 | April 23, 2020 23:45 | 5h 15m | 647 | 806 |
| 7 | February 12, 2020 00:00 | February 12, 2020 02:00 | 2h | 644 | 966 |
| 8 | June 25, 2020 16:30 | June 25, 2020 17:15 | 45m | 626 | 315 |
| 9 | April 13, 2020 12:45 | April 14, 2020 02:15 | 13h 30m | 480 | 2,446 |
| 10 | September 20, 2020 01:00 | September 20, 2020 03:15 | 2h 15m | 473 | 854 |
Outage episodes by size in 2020: 26 reached 100+ customers, 2 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 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 |
|---|---|---|---|---|---|
| Dominion Energy South Carolina, Inc | 2020 | 2.4 hrs | 1.40 | 88 min | 1.17 |
| Aiken Electric Coop Inc | 2020 | 3.4 hrs | - | 1.8 hrs | - |
| Tri-County Electric Coop, Inc (SC) | 2020 | 4.1 hrs | 3.39 | 3.5 hrs | 3.25 |
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 ÷ 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, 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/calhoun-county