Free home energy assessment available in-home and virtually. Seal and insulate your home and save through rebate program. B-roll available: Virtual home energy assessment, energy efficiency tips GREENVILLE, S.C., Dec. 18, 2024 /PRNewswire/ -- This weekend's winter solstice signals the official start of winter. Duke Energy is here to help our customers in South Carolina prepare as we head into winter, so they know the tools available and ways to manage energy use. There is not a one-size-fits-all solution. ...