The purpose of this legislation is to update the Geothermal Steam Act of 1970 to change how royalties are calculated for geothermal energy production. The main objective is to ensure that royalties are based on the output of each individual geothermal electric generating facility, rather than on a broader basis. Key provisions of the legislation include new definitions for what constitutes a geothermal electric generating facility and the introduction of specific rules for calculating royalties.