S.C. Code Ann. § 12-6-3340 — Investment tax credit for purchase and installation of certain energy conservation and renewable energy production measures

(A) A taxpayer may claim as a credit twenty-five percent of all expenditures paid or incurred during the taxable year for the purchase and installation of the following energy conservation and renewable energy production measures:
(1) conservation tillage equipment;
(2) drip/trickle irrigation systems to include all necessary measures and equipment including, but not limited to, dams, pipes, pumps, wells, installation charges and other related expenses; and
(3) dual purpose combination truck and crane equipment.
(B) In the case of pass-through entities, the credit is determined at the entity level and is limited to two thousand five hundred dollars. The maximum amount of credit for all taxpayers, including any credit passed through to the taxpayer from a partnership, "S" Corporation, estate, or trust, is also limited to two thousand five hundred dollars.
(C) The credit may be claimed only one time for each of the three measures.
(D) If the credit exceeds the taxpayer's tax liability for the taxable year, the excess amount may be carried forward for credit against income taxes in the next five succeeding taxable years.