; and (II) to the extent practicable, use existing sites where subsurface characterization or geothermal energy integration analysis has been conducted. (iii) Eastern demonstration Not less than 1 demonstration project carried out under clause (i) shall be located in an area east of the Mississippi River that is suitable for enhanced geothermal demonstration for power, heat, or a combination of power and heat. . 6. Cost sharing and proposal evaluation Section 617(b) of the Energy Independence and Security Act of 2007 ( 42 U.S.C. 17196 ) is amended by striking paragraph (2) and redesignating paragraphs (3) and (4) as paragraphs (2) and (3), respectively. 7. Advanced geothermal computing and data science research and development (a) In general Section 618 of the Energy Independence and Security Act of 2007 ( 42 U.S.C. 17197 ) is amended to read as follows: 618. Advanced geothermal computing and data science research and development (a) In general The Secretary shall carry out a program of research and development of advanced computing and data science tools for geothermal energy. (b) Programs The program authorized in subsection (a) shall include the following: (1) Advanced computing for geothermal systems technologies Research, development, and demonstration of technologies to develop advanced data, machine learning, artificial intelligence, and related computing tools to assist in locating geothermal resources, to increase the reliability of site characterization, to increase the rate and efficiency of drilling, to improve induced seismicity mitigation, and to support enhanced geothermal systems technologies. (2) Geothermal systems reservoir modeling Research, development, and demonstration of models of geothermal reservoir performance and enhanced geothermal systems reservoir stimulation technologies and techniques, with an emphasis on accurately modeling heat flow, permeability evolution, seismicity, and operational performance over time, including collaboration with industry and field validation. (c)