S.C. Code Ann. § 58-21-20

Any street railway corporation organized under the provisions of Chapter 15 of this Title or the charter of which may be amended hereunder, shall be authorized and empowered, upon proper application therefor, to make, produce, generate and supply light, power and heat by the means of electricity and gas, or either of them, both for its corporate purposes and for sale to the public, subject to the restrictions and limitations that may be imposed by the municipalities in which it may seek to do business.