County annual report · FIPS 45053
2021 Jasper County, SC Power Outage Report
In 2021, customers in Jasper County, SC went without power for an average of 3.6 hours, a total of 65K customer-hours (South Carolina average 2.1 hours). That ranks 11th worst of 46 South Carolina counties and 1635th of 2,974 nationally.
Compared with SC, the US and 2020
Coverage line is EAGLE-I's share of South Carolina customers tracked each year.
Biggest outages in Jasper County, 2021
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | July 28, 2021 12:15 | July 28, 2021 18:30 | 6h 15m | 9,865 | 13K |
| 2 | July 27, 2021 03:45 | July 27, 2021 13:00 | 9h 15m | 7,370 | 9,983 |
| 3 | August 1, 2021 11:00 | August 1, 2021 14:00 | 3h | 3,665 | 3,271 |
| 4 | July 8, 2021 05:45 | July 9, 2021 02:30 | 20h 45m | 2,298 | 16K |
| 5 | August 19, 2021 00:00 | August 19, 2021 03:30 | 3h 30m | 1,268 | 1,109 |
| 6 | May 8, 2021 04:00 | May 8, 2021 04:45 | 45m | 814 | 611 |
| 7 | December 29, 2021 15:30 | December 29, 2021 19:30 | 4h | 803 | 451 |
| 8 | August 25, 2021 19:15 | August 25, 2021 21:15 | 2h | 715 | 359 |
| 9 | January 4, 2021 13:15 | January 4, 2021 15:15 | 2h | 712 | 831 |
| 10 | July 4, 2021 15:00 | July 4, 2021 19:15 | 4h 15m | 669 | 1,000 |
Outage episodes by size in 2021: 46 reached 100+ customers, 5 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 Jasper County reported on EIA Form 861 for 2021, 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 | 2021 | 1.5 hrs | 1.10 | 79 min | 1.02 |
| Palmetto Electric Coop Inc | 2021 | 1.5 hrs | 1.04 | 33 min | 0.70 |
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 2021; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 17,702 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. Jasper County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Jasper County, SC annual power outage report, 2021, 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/2021/south-carolina/jasper-county