Electric companies in South Carolina
| Company | Homes served | Avg. bill / month | Avg. rate | Bill covers |
|---|---|---|---|---|
| Dominion Energy South Carolina | 696,385 | $151 | 14.6¢ | Full bill |
| Duke Energy Carolinas | 568,586 | $144 | 14.0¢ | Full bill |
| Santee Cooper | 185,529 | $108 | 11.4¢ | Full bill |
| Duke Energy Progress | 143,713 | $171 | 14.9¢ | Full bill |
| Berkeley Electric Cooperative | 115,117 | $170 | 14.9¢ | Full bill |
| Horry Electric Cooperative | 86,726 | $140 | 13.2¢ | Full bill |
| Palmetto Electric Cooperative | 68,338 | $154 | 12.8¢ | Full bill |
| Blue Ridge Electric Cooperative | 67,553 | $189 | 18.9¢ | Full bill |
| York Electric Cooperative | 65,244 | $137 | 12.7¢ | Full bill |
| Laurens Electric Cooperative | 58,438 | $156 | 14.7¢ | Full bill |
| Mid-Carolina Electric Cooperative | 56,463 | $171 | 14.9¢ | Full bill |
One regulated utility serves each area
In South Carolina, your electric company is set by where you live. The state regulator approves its rates, so comparing companies here mostly matters when you move.
How we calculated this
Figures come from the U.S. Energy Information Administration, Form EIA-861 (2024 data), for companies with 50,000 or more residential customers. The average bill is residential revenue divided by customers and 12 months; the rate is revenue divided by kilowatt-hours sold. Your own bill depends on your usage, plan and season. More sections for South Carolina (rent, gas and more) are added as each data set goes live.
Source: U.S. EIA, Form EIA-861. Last verified November 2026.