County annual report · FIPS 45079
2022 Richland County, SC Power Outage Report
In 2022, customers in Richland County, SC went without power for an average of 2.7 hours, a total of 608K customer-hours (South Carolina average 4.4 hours). That ranks 41st worst of 46 South Carolina counties and 2055th of 2,976 nationally.
Compared with SC, the US and 2021
Coverage line is EAGLE-I's share of South Carolina customers tracked each year.
Biggest outages in Richland County, 2022
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 2, 2022 23:30 | January 5, 2022 05:30 | 2d 6h | 22,896 | 166K |
| 2 | September 28, 2022 22:30 | October 2, 2022 07:45 | 3d 9h | 17,159 | 64K |
| 3 | January 16, 2022 12:00 | January 18, 2022 05:15 | 1d 17h | 16,157 | 84K |
| 4 | December 23, 2022 08:45 | December 24, 2022 08:30 | 23h 45m | 11,558 | 45K |
| 5 | June 16, 2022 12:30 | June 19, 2022 07:15 | 2d 18h | 10,494 | 43K |
| 6 | May 16, 2022 12:30 | May 16, 2022 17:15 | 4h 45m | 8,599 | 2,160 |
| 7 | May 29, 2022 06:00 | May 29, 2022 06:30 | 30m | 6,762 | 3,381 |
| 8 | May 30, 2022 00:45 | May 30, 2022 02:15 | 1h 30m | 6,762 | 1,692 |
| 9 | December 24, 2022 09:30 | December 25, 2022 06:15 | 20h 45m | 4,022 | 3,335 |
| 10 | August 8, 2022 11:30 | August 8, 2022 12:30 | 1h | 3,802 | 960 |
Outage episodes by size in 2022: 163 reached 100+ customers, 42 reached 1,000+ customers, 5 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 Richland County reported on EIA Form 861 for 2022, 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 | 2022 | 3.9 hrs | 1.93 | 78 min | 1.07 |
| Tri-County Electric Coop, Inc (SC) | 2022 | 9.7 hrs | 3.54 | 3.1 hrs | 2.14 |
| Mid-Carolina Electric Coop Inc | 2022 | 3.0 hrs | 2.50 | 2.0 hrs | 2.09 |
| Fairfield Electric Coop, Inc | - | - | - | - | - |
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 2022; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 227,559 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. Richland County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Richland County, SC annual power outage report, 2022, 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/2022/south-carolina/richland-county