Colorado Revised Statutes Title 31. Government Municipal § 31-32-101. Franchise granted by ordinance

No franchise or license giving or granting to any person the right or privilege to erect, construct, operate, or maintain a street railway, electric light plant or system, gasworks, gas plant or system, geothermal system, solar system, or telegraph or telephone system within any city or town or to use the streets or alleys of a city or town for such purposes shall be granted or given by any city or town in this state in any other manner or form than by an ordinance passed and published in the manner set forth in this part 1.