Side by side (SC, EIA-861)
| Metric | Dominion Energy South Carolina, Inc | Duke Energy Carolinas, LLC |
|---|---|---|
| 2024 average price, ¢/kWh | 14.59 | 13.99 |
| 2023 average price, ¢/kWh | 14.41 | 12.67 |
| Annual cost at 10,800 kWh, $/yr | $1,576 | $1,511 |
| Residential customers (2024) | 696,385 | 568,586 |
| Ownership | Investor-owned | Investor-owned |
| Counties served in SC | 11 | 19 |
Average price = residential revenue ÷ sales (bundled service): the all-in price customers actually paid, including supply, delivery and riders. Profiles: Dominion Energy South Carolina, Inc · Duke Energy Carolinas, LLC · South Carolina overview.
Where the territories meet
Both utilities file EIA-861 service territory in: Fairfield county (SC, 2024).
Adjoining or overlapping territory in a county does not mean households there can pick between the two — service maps are parcel-level and fixed. The county overlap mainly matters when choosing where to live or comparing town-level costs.
Can you actually choose between them?
No — not for delivery. Distribution territories are exclusive and set by address; Dominion Energy South Carolina, Inc and Duke Energy Carolinas, LLC do not compete for the same meters. South Carolina is a regulated retail market — there is no residential supplier shopping; rates are set in utility-commission proceedings (psc.sc.gov). The price gap above mainly matters when choosing where to live, comparing towns, or benchmarking your bill.
Questions people ask
- Is Dominion Energy South Carolina, Inc cheaper than Duke Energy Carolinas, LLC?
- No — in 2024 Dominion Energy South Carolina, Inc customers averaged 14.59 cents/kWh versus 13.99 for Duke Energy Carolinas, LLC (EIA-861). Duke Energy Carolinas, LLC was cheaper by 0.60 cents, about $65 per year at 10,800 kWh.
- Can I switch from Dominion Energy South Carolina, Inc to Duke Energy Carolinas, LLC?
- No — distribution territories are exclusive and set by address; you cannot pick between the two wires companies. South Carolina has no residential supplier shopping either; rates are set in utility-commission proceedings.
- Why is Dominion Energy South Carolina, Inc more expensive than Duke Energy Carolinas, LLC?
- EIA-861 averages reflect everything customers actually paid — supply costs, delivery rates, riders, and surcharges across each territory. Differences in generation mix, grid investment, storm costs, and customer density between Dominion Energy South Carolina and Duke Energy Carolinas territory all feed the 0.60-cent gap.