; and (II) in the case of the FORGE site selected under subparagraph (B)(ii), is the initial term under subparagraph (C) or an additional term under clause (i)(II). (3) Enhanced geothermal systems demonstrations (A) In general Beginning on the date of enactment of the AGILE Act of 2019 , the Secretary, in collaboration with industry partners and institutions of higher education, shall support an initiative for demonstration of enhanced geothermal systems for power production or direct use. (B) Projects (i) In general Under the initiative described in subparagraph (A), not less than 4 demonstration projects shall be carried out in locations that are commercially viable for enhanced geothermal systems development, as determined by the Secretary. (ii) Requirements Demonstration projects under clause (i) shall— (I) collectively demonstrate— (aa) different geologic settings, such as hot sedimentary aquifers, layered geologic systems, supercritical systems, and basement rock systems; and (bb) a variety of development techniques, including open hole and cased hole completions, differing well orientations, and stimulation mechanisms; (II) to the extent practicable, use existing sites where subsurface characterization or geothermal energy integration analysis has been conducted