S.C. Code Ann. § 48-52-630

An agency's budget must not be reduced by the full amount of money saved through energy conservation measures. Appropriate financial incentives to encourage the reinvestment of energy costs savings into additional energy conservation areas must be provided. Energy savings must be divided among the agency, the general fund, and debt retirement of capital expenditures on energy efficiency. Agencies must be encouraged to reinvest their savings into energy conservation areas, where practical.