Side by side (SC, EIA-861)
| Metric | Dominion Energy South Carolina, Inc | Mid-Carolina Electric Coop Inc |
|---|---|---|
| 2024 average price, ¢/kWh | 14.59 | 14.88 |
| 2023 average price, ¢/kWh | 14.41 | 14.48 |
| Annual cost at 10,800 kWh, $/yr | $1,576 | $1,607 |
| Residential customers (2024) | 696,385 | 56,463 |
| Ownership | Investor-owned | Co-op |
| Counties served in SC | 11 | 5 |
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 · Mid-Carolina Electric Coop Inc · South Carolina overview.
Where the territories meet
Both utilities file EIA-861 service territory in: Aiken · Lexington · Richland counties (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 Mid-Carolina Electric Coop Inc 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 Mid-Carolina Electric Coop Inc?
- Yes — in 2024 Dominion Energy South Carolina, Inc customers averaged 14.59 cents/kWh versus 14.88 for Mid-Carolina Electric Coop Inc (EIA-861). Dominion Energy South Carolina, Inc was cheaper by 0.29 cents, about $31 per year at 10,800 kWh.
- Can I switch from Mid-Carolina Electric Coop Inc to Dominion Energy South Carolina, Inc?
- 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 Mid-Carolina Electric Coop Inc more expensive than Dominion Energy South Carolina, Inc?
- 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 Mid-Carolina Electric Coop and Dominion Energy South Carolina territory all feed the 0.29-cent gap.