Mich. Comp. Laws § 460.809

Sec. 9. The governing body of a municipal electric utility system may purchase, acquire, construct, improve, enlarge, extend, or repair facilities for the transmission of energy, and may contract for the purchase, sale, exchange, interchange, wheeling, pooling, or transmission of electrical energy with another power utility for a consideration and for a period and upon other terms and conditions as may be determined by the parties to the agreement.