As used in this chapter:
(1) "County of origin" means any county in which the United States bureau of land management has leased lands for geothermal development.
(2) "Geothermal energy" means the natural heat of the earth and the medium by which this heat is extracted from the earth, including liquids or gases, as well as any minerals contained in any natural or injected fluids, brines, and associated gas but excluding oil, hydrocarbon gas, and other hydrocarbon substances.
[1981 c 158 § 2.]