S.C. Code Ann. § 12-65-30
(A) Subject to the terms and conditions of this chapter, a taxpayer who rehabilitates a textile mill site is eligible for either:
(B) If the taxpayer elects to receive the credit pursuant to subsection (A)(1), the following provisions apply:
(3)
(C) If the taxpayer has acquired the textile mill site after December 31, 2007, and elects to receive the credit pursuant to subsection (A)(2), the following provisions apply:
(5) The credit allowed by this subsection is limited in use to fifty percent of either:
(6)