Oregon Revised Statutes Cities § 225.030

Any city owning, controlling or operating a system of waterworks or electric light and power system for supplying water or electricity for its inhabitants and for general municipal purposes, and any person controlling or operating any water system or electric light and power system under contract, lease or private ownership, may sell, supply and dispose of water or electricity from such system to any person within or without the limits of the city in which the water or electric light and power system is operated, and may make contracts in reference to the sale and disposal of water or electricity from such system, for use within or without the corporate limits.