Timothy Kneafsey P.E., Ph.D. is a Staff Scientist at Lawrence Berkeley National Laboratory and serves as the Hydrocarbon Resources Program Lead. He has bachelor’s degrees in mechanical and civil engineering from the University of New Mexico, a master’s degree in civil engineering from the University of California at Berkeley, and a Ph.D. in civil and environmental engineering from the University of California at Berkeley. He has led, performed, and collaborated on numerous laboratory and field studies related to heat and mass transfer and phase change in fractured and porous rock. He is currently the principal investigator of the EGS Collab project; a multi-investigator project composed of researchers from national laboratories, universities, and industry focused on better understanding stimulation of crystalline rock to facilitate enhanced geothermal systems.