Duke Energy solar South Carolina

South Carolina gives solar owners a strange bargain: some of the strongest sunshine in the eastern United States, some of the cheapest electricity, and a 25% state tax credit that is now the biggest incentive left. A typical system costs $2.85 per watt, or about $24,083 for the 8.45 kW size South Carolinians actually install, and the state credit takes $6,021 of that back over two or more tax years. But cheap power cuts both ways — at roughly 16 cents a kilowatt-hour, every unit your panels make is worth less than it would be up north, and the Solar Choice export rules pay only about 4 cents for power you send to the grid. This guide prices every system size, compares Charleston, Columbia, and Greenville, explains which utility you have before it explains anything else, and works the payback separately for Dominion, both Duke companies, and Santee Cooper — because in South Carolina, the name at the top of your electric bill decides your return more than your roof does.