County annual report · FIPS 45079
2018 Richland County, SC Power Outage Report
In 2018, customers in Richland County, SC went without power for an average of 2.4 hours, a total of 557K customer-hours (South Carolina average 5.2 hours). That ranks 34th worst of 46 South Carolina counties and 1675th of 2,798 nationally.
Compared with SC, the US and 2017
Coverage line is EAGLE-I's share of South Carolina customers tracked each year.
Biggest outages in Richland County, 2018
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | October 11, 2018 06:15 | October 13, 2018 02:00 | 1d 19h | 21,358 | 120K |
| 2 | April 15, 2018 14:15 | April 20, 2018 13:15 | 4d 23h | 20,399 | 128K |
| 3 | January 13, 2018 06:15 | January 13, 2018 20:30 | 14h 15m | 13,903 | 3,764 |
| 4 | July 12, 2018 19:00 | July 13, 2018 03:30 | 8h 30m | 13,738 | 4,650 |
| 5 | May 1, 2018 18:45 | May 2, 2018 03:45 | 9h | 9,621 | 14K |
| 6 | January 12, 2018 11:45 | January 13, 2018 01:00 | 13h 15m | 9,185 | 2,863 |
| 7 | June 24, 2018 20:45 | June 26, 2018 10:45 | 1d 14h | 7,136 | 47K |
| 8 | August 15, 2018 08:30 | August 15, 2018 12:15 | 3h 45m | 6,401 | 1,827 |
| 9 | September 15, 2018 04:00 | September 17, 2018 00:15 | 1d 20h | 5,709 | 22K |
| 10 | January 23, 2018 07:45 | January 24, 2018 08:45 | 1d 1h | 3,880 | 3,130 |
Outage episodes by size in 2018: 190 reached 100+ customers, 47 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 2018, 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 | 2018 | 2.8 hrs | 1.80 | 1.6 hrs | 1.37 |
| Tri-County Electric Coop, Inc (SC) | 2018 | 6.4 hrs | 3.24 | 2.9 hrs | 2.31 |
| Mid-Carolina Electric Coop Inc | 2018 | 4.1 hrs | 2.56 | 2.2 hrs | 2.03 |
| 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 2018; 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, 2018, 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/2018/south-carolina/richland-county