County annual report · FIPS 45031
2021 Darlington County, SC Power Outage Report
In 2021, customers in Darlington County, SC went without power for an average of 3.9 hours, a total of 75K customer-hours (South Carolina average 2.1 hours). That ranks 8th worst of 46 South Carolina counties and 1557th 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 Darlington 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 | January 21, 2021 18:30 | January 22, 2021 00:15 | 5h 45m | 5,717 | 8,774 |
| 2 | May 20, 2021 03:00 | May 20, 2021 04:30 | 1h 30m | 4,145 | 5,721 |
| 3 | May 4, 2021 21:45 | May 5, 2021 06:15 | 8h 30m | 2,054 | 4,183 |
| 4 | July 27, 2021 21:30 | July 28, 2021 13:15 | 15h 45m | 1,856 | 8,927 |
| 5 | March 15, 2021 02:15 | March 15, 2021 04:45 | 2h 30m | 1,630 | 1,362 |
| 6 | June 8, 2021 18:15 | June 8, 2021 22:30 | 4h 15m | 1,521 | 1,533 |
| 7 | February 16, 2021 14:00 | February 17, 2021 01:30 | 11h 30m | 1,128 | 2,269 |
| 8 | June 9, 2021 12:15 | June 9, 2021 23:45 | 11h 30m | 958 | 744 |
| 9 | June 17, 2021 10:15 | June 17, 2021 11:15 | 1h | 953 | 953 |
| 10 | July 1, 2021 23:45 | July 2, 2021 04:00 | 4h 15m | 895 | 800 |
Outage episodes by size in 2021: 46 reached 100+ customers, 7 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 Darlington 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 |
|---|---|---|---|---|---|
| Duke Energy Progress - (NC) | 2021 | 3.1 hrs | 1.39 | 2.4 hrs | 1.34 |
| Duke Energy | - | - | - | - | - |
| MPD Electric Cooperative | - | - | - | - | - |
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 ÷ 19,211 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. Darlington County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Darlington 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/darlington-county