Oregon Revised Statutes Mineral Resources § 523.130

A geothermal heating district shall charge consumers for the geothermal heat furnished and fix and collect the rates therefor. Rates charged may be fixed and classified according to the type of use and according to the amount of geothermal heat used. Any contract entered into by a district with persons other than domestic users shall provide for immediate cancellation whenever no surplus supply of geothermal heat exists over and above any and all demands of domestic users. A district also may contract with any person or may enter into an intergovernmental agreement under ORS chapter 190 to supply, furnish and sell surplus geothermal heat on such terms and conditions and at such rates as the board of commissioners considers advisable.