County annual report · FIPS 45041
2021 Florence County, SC Power Outage Report
In 2021, customers in Florence County, SC went without power for an average of 1.9 hours, a total of 104K customer-hours (South Carolina average 2.1 hours). That ranks 31st worst of 46 South Carolina counties and 2262nd 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 Florence 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 18, 2021 20:15 | July 19, 2021 07:45 | 11h 30m | 4,551 | 20K |
| 2 | July 8, 2021 10:30 | July 9, 2021 03:45 | 17h 15m | 3,606 | 3,513 |
| 3 | June 10, 2021 22:30 | June 11, 2021 05:00 | 6h 30m | 2,630 | 2,175 |
| 4 | March 1, 2021 15:30 | March 2, 2021 02:45 | 11h 15m | 2,241 | 2,164 |
| 5 | July 2, 2021 15:00 | July 2, 2021 18:15 | 3h 15m | 1,958 | 1,473 |
| 6 | April 19, 2021 15:00 | April 19, 2021 16:30 | 1h 30m | 1,717 | 434 |
| 7 | January 11, 2021 23:15 | January 12, 2021 03:30 | 4h 15m | 1,634 | 1,592 |
| 8 | December 13, 2021 14:45 | December 13, 2021 17:45 | 3h | 1,449 | 2,180 |
| 9 | April 11, 2021 01:00 | April 11, 2021 03:00 | 2h | 1,326 | 1,637 |
| 10 | June 15, 2021 11:45 | June 15, 2021 22:15 | 10h 30m | 1,170 | 1,622 |
Outage episodes by size in 2021: 95 reached 100+ customers, 12 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 Florence 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 |
| Santee Electric Coop, Inc | 2021 | 2.3 hrs | - | 2.2 hrs | - |
| 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 ÷ 54,564 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. Florence County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Florence 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/florence-county