Dominion Energy South Carolina, Inc
Investor Owned electric utility · South Carolina · #50 of 3,199 U.S. utilities by customers · EIA utility #17539
Dominion Energy South Carolina, Inc is a investor owned electric utility serving 824,270 customers in South Carolina. In 2025 it sold 21,771 gigawatt-hours of electricity for $2.89B in revenue, an average realized rate of 13.27¢ per kWh across all customer classes and 16.41¢ per kWh for residential customers. Its reported service territory covers 23 counties. EIA records its activities as: generation, transmission, buying transmission, distribution, wholesale marketing, bundled.
Customers, sales and rates by customer class (2025)
| Class | Customers | Sales (GWh) | Revenue | Avg realized rate | Share of sales |
|---|---|---|---|---|---|
| Residential | 712,679 | 8,827 | $1.45B | 16.41¢ | |
| Commercial | 110,815 | 7,842 | $1.01B | 12.90¢ | |
| Industrial | 776 | 5,103 | $430.31M | 8.43¢ | |
| Total | 824,270 | 21,771 | $2.89B | 13.27¢ |
Average realized rate = revenue divided by sales as reported on EIA Form 861. It blends fixed charges, demand charges and riders into one per-kWh figure; it is not the utility's tariff rate. Estimated residential bill assumes the average residential customer's actual 2025 usage (1,032 kWh/month).
Five-year trend
| Year | Customers | Sales (GWh) | Revenue | Residential rate |
|---|---|---|---|---|
| 2021 | 771,620 | 21,411 | $2.53B | 14.66¢ |
| 2022 | 781,613 | 21,820 | $2.95B | 16.22¢ |
| 2023 | 788,721 | 21,026 | $2.41B | 14.41¢ |
| 2024 | 806,434 | 21,722 | $2.57B | 14.59¢ |
| 2025 | 824,270 | 21,771 | $2.89B | 16.41¢ |
Reliability (2025)
Average outage time (SAIDI): 131 minutes per customer per year
Average outages (SAIFI): 1.34 per customer
Average restoration time (CAIDI): 98 minutes
As reported for South Carolina under the IEEE standard, with major event days included where the standard reports them. Lower is better; see the reliability rankings.
Energy supply (2025)
Net generation: 18,075 GWh
Wholesale power purchased: 5,260 GWh
Winter peak demand: 4,590 MW
Energy losses: 5.0% of energy handled
Meters & rooftop solar (2025)
Smart (AMI) meters: 99.2% of 824,270 meters
Customer-sited generation (net metering): 16,679 installations, 141.8 MW of capacity
Counties served
Abbeville, SCAiken, SCAllendale, SCBamberg, SCBarnwell, SCBeaufort, SCBerkeley, SCCalhoun, SCCharleston, SCColleton, SCDorchester, SCEdgefield, SCFairfield, SCGreenwood, SCHampton, SCJasper, SCLexington, SCMcCormick, SCNewberry, SCOrangeburg, SCRichland, SCSaluda, SCUnion, SC
Other large utilities in South Carolina
- South Carolina Public Service Authority - 219,897 customers, residential 12.91¢
- Berkeley Electric Coop Inc - 138,073 customers, residential 16.32¢
- Horry Electric Coop Inc - 103,949 customers, residential 13.83¢
- Palmetto Electric Coop Inc - 81,863 customers, residential 14.39¢
- Blue Ridge Electric Coop Inc - (SC) - 74,014 customers, residential 19.82¢
- York Electric Coop Inc - 71,541 customers, residential 13.68¢
- Laurens Electric Coop, Inc - 66,192 customers, residential 15.62¢
- Mid-Carolina Electric Coop Inc - 61,196 customers, residential 16.83¢
All South Carolina utilities and rates
Source: U.S. Energy Information Administration, Form EIA-861 2025 (filed by the utility; figures as published). Utility #17539 in the EIA frame.