The main purpose of this legislation is to update the Geothermal Steam Act of 1970 by allowing the Department of the Interior to recover costs related to geothermal leasing, permitting, and inspections. This aims to streamline the process for managing geothermal resources while ensuring that the government can cover its expenses. Key provisions of the legislation include the authority for the Secretary of the Interior to require applicants for geothermal leases to reimburse the government for reasonable administrative costs.