Mo. Rev. Stat. § 91.040
Any city, town or village, which any city of this state, having an electric light or power plant, may agree to supply with electric current under the provisions of sections 91.020 and 91.030, is hereby authorized and empowered to conduct said current from the city, agreeing to supply the same, and for that purpose to erect poles, piers, abutments, wires and other fixtures along, across or under any of the public roads, streets and water in such a manner as not to incommode or endanger the public in the use of said public roads, streets and waters, and to put in and maintain and operate all apparatus and devices necessary for and in conducting said current from the city agreeing to supply the same into its own limits in, upon, over and through any territory of this state outside, as well as within, the limits of said city, town or village.
§ 91.040, RSMo