S.D. Codified Laws § 49-33-28

Any corporation organized under this chapter may purchase, take, and hold all or any part of the property, rights, privileges, and franchises of any other corporation, foreign or domestic, organized for the purpose of operating any street railway by electric power or for the purpose of manufacturing, creating, or generating electricity for power, light, heat, or any other purpose, and may take and hold stock and in its corporate capacity become a subscriber to the capital stock of any other corporation or corporations.