County annual report · FIPS 45039
2021 Fairfield County, SC Power Outage Report
In 2021, customers in Fairfield County, SC went without power for an average of 2.9 hours, a total of 41K customer-hours (South Carolina average 2.1 hours). That ranks 15th worst of 46 South Carolina counties and 1866th 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 Fairfield 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 25, 2021 20:00 | July 26, 2021 01:30 | 5h 30m | 2,563 | 9,200 |
| 2 | July 26, 2021 04:00 | July 26, 2021 08:15 | 4h 15m | 2,013 | 7,046 |
| 3 | June 15, 2021 00:00 | June 15, 2021 05:15 | 5h 15m | 1,646 | 1,962 |
| 4 | April 21, 2021 15:00 | April 21, 2021 19:00 | 4h | 1,504 | 1,552 |
| 5 | May 4, 2021 20:45 | May 5, 2021 07:15 | 10h 30m | 1,367 | 3,766 |
| 6 | August 11, 2021 20:00 | August 11, 2021 21:30 | 1h 30m | 1,335 | 1,021 |
| 7 | July 27, 2021 21:45 | July 28, 2021 13:45 | 16h | 747 | 2,456 |
| 8 | August 14, 2021 20:45 | August 15, 2021 03:30 | 6h 45m | 602 | 778 |
| 9 | July 1, 2021 02:30 | July 1, 2021 06:15 | 3h 45m | 587 | 1,776 |
| 10 | May 30, 2021 02:30 | May 30, 2021 06:30 | 4h | 575 | 730 |
Outage episodes by size in 2021: 28 reached 100+ customers, 6 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 Fairfield 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 Carolinas, LLC | 2021 | 3.5 hrs | 1.20 | 2.5 hrs | 1.10 |
| Dominion Energy South Carolina, Inc | 2021 | 1.5 hrs | 1.10 | 79 min | 1.02 |
| Newberry Electric Coop, Inc | 2021 | 2.6 hrs | - | 2.6 hrs | - |
| Fairfield Electric Coop, Inc | - | - | - | - | - |
| Town of Winnsboro - (SC) | - | - | - | - | - |
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 ÷ 13,983 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. Fairfield County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Fairfield 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/fairfield-county