Mich. Comp. Laws § 123.91

Sec. 1. That it shall be lawful for any city or incorporated village in this state to acquire by purchase or to construct, operate and maintain works for the purpose of supplying such cities or villages and the inhabitants thereof with gas, electric or other lights, or to contract for the furnishing thereof at such times and on such terms and conditions as the common council of any such city or the board of trustees in any such village shall direct.