S.C. Code Ann. § 12-6-3376
(A) For taxable years beginning in 2012 and before 2017, a taxpayer is allowed a tax credit against the income tax imposed pursuant to this chapter for the in-state purchase or lease of a new plug-in hybrid vehicle.
(5) uses an external source of energy to recharge the battery.
Qualified plug-in hybrid vehicles also must be manufactured primarily for use on public streets, roads, highways, and not be classified as low or medium speed vehicles. Low-speed vehicles are vehicles capable of a speed of at least twenty but not more than twenty-five miles per hour, is used primarily for short trips and recreational purposes, and has safety equipment such as lights, reflectors, mirrors, parking brake, windshield, and safety belts. Medium-speed vehicles are vehicles capable of a speed of at least thirty but not more than forty-six miles per hour and has safety equipment such as lights, reflectors, mirrors, parking brake, windshield, and safety belts.
The credit is equal to six hundred sixty-seven dollars, plus one hundred eleven dollars if the vehicle has at least five kilowatt hours of battery capacity, plus an additional one hundred eleven dollars for each kilowatt hour of battery capacity in excess of five kilowatt hours. The maximum credit allowed by this section is two thousand dollars. The credit allowed by this section is nonrefundable and if the amount of the credit exceeds the taxpayer's liability for the applicable taxable year, any unused credit may be carried forward for five years.
A plug-in hybrid vehicle is a vehicle that:
HISTORY: 2007 Act No. 83, Section 11, eff June 19, 2007; 2012 Act No. 161, Section 1, eff May 14, 2012.
2012 Act No. 161, Section 2, provides as follows:
"This act takes effect upon approval by the Governor and applies to in-state purchases and leases made on or after the first day of the calendar month beginning at least thirty days after the effective date of this act."