County annual report · FIPS 45079
2023 Richland County, SC Power Outage Report
In 2023, customers in Richland County, SC went without power for an average of 2.0 hours, a total of 465K customer-hours (South Carolina average 2.7 hours). That ranks 35th worst of 46 South Carolina counties and 2270th of 2,977 nationally.
Compared with SC, the US and 2022
Coverage line is EAGLE-I's share of South Carolina customers tracked each year.
Biggest outages in Richland County, 2023
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | February 6, 2023 14:15 | February 7, 2023 01:15 | 11h | 23,883 | 9,273 |
| 2 | August 7, 2023 11:30 | August 9, 2023 02:45 | 1d 15h | 11,115 | 23K |
| 3 | June 19, 2023 04:30 | June 19, 2023 05:00 | 30m | 10,841 | 2,711 |
| 4 | August 3, 2023 11:30 | August 3, 2023 17:45 | 6h 15m | 10,786 | 6,376 |
| 5 | April 30, 2023 11:45 | May 6, 2023 14:30 | 6d 2h | 9,815 | 8,363 |
| 6 | July 25, 2023 12:00 | July 26, 2023 07:00 | 19h | 7,163 | 3,167 |
| 7 | August 19, 2023 03:30 | August 19, 2023 10:15 | 6h 45m | 6,629 | 4,628 |
| 8 | July 21, 2023 08:30 | July 23, 2023 07:45 | 1d 23h | 6,149 | 29K |
| 9 | December 11, 2023 01:15 | December 11, 2023 22:15 | 21h | 5,369 | 22K |
| 10 | September 7, 2023 12:15 | September 9, 2023 00:00 | 1d 11h | 4,563 | 18K |
Outage episodes by size in 2023: 201 reached 100+ customers, 57 reached 1,000+ customers, 4 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 2023, 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 | 2023 | 2.0 hrs | 1.48 | 90 min | 1.32 |
| Tri-County Electric Coop, Inc (SC) | 2023 | 7.1 hrs | 3.75 | 3.3 hrs | 2.43 |
| Mid-Carolina Electric Coop Inc | 2023 | 2.3 hrs | 1.63 | 2.0 hrs | 1.45 |
| 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 n/a of South Carolina's customers in 2023; 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, 2023, 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/2023/south-carolina/richland-county