S.C. Code § 13-21-50
In furtherance of its purposes, the authority may issue revenue bonds, the interest on which may or may not be excludable from gross income for federal income tax purposes, for the purpose of raising funds needed from time to time for the financing or refinancing, in whole or in part, the acquisition, construction, equipment, maintenance, and operation of any facility, building structure, or any other matter or thing which the authority is authorized to acquire, construct, equip, maintain, or operate.
In connection with the issuance of bonds, the authority may enter into an agreement with a company to consult, operate, maintain, and improve a project, and the authority may enter into a financing agreement with the company prescribing the terms and conditions of the payments to be made by the company to the authority or its assignee, to meet the payments that become due on the bonds.
S.C. Code § 13-21-50