About XGS
XGS Energy is on a mission to provide Clean, Round-the-Clock Energy Everywhere, Forever. Our team of scientists, engineers and change-markers are some of the best and brightest with decades of experience in geoscience, resource evaluation, technology development, field operations, and project development and financing.
Leadership team
JOsh Prueher
Chief Executive Officer
Josh has founded and sold multiple energy technology and infrastructure companies over 15 years. Following the sale of Earl Energy, which designed and built mission-critical microgrids for the U.S. military, Josh founded and served as CEO of FlexGen, a leading utility-scale energy storage system integrator. While at FlexGen, Josh co-founded and served as CFO at Broad Reach Power, which became the largest energy storage Independent Power Producer in the U.S., deploying over $900 million in infrastructure capital in two years. Broad Reach Power was acquired by ENGIE in late 2023. Early in his career, Josh was an investment banker at Goldman, Sachs & Co. in New York where he completed over $15 billion in equity and debt transactions. He is a U.S. Navy veteran with a B.S. in History with Honors from the U.S. Naval Academy, where he was the Brigade Commander, and an M.B.A. from the University of Oxford, where he was the Fitzgerald Scholar.
GHAZAL IZADI, Ph.D.
Chief Operating Officer
Ghazal has led technological advancement and operations in unconventional oil & gas and geothermal for over a decade. Prior to XGS, Ghazal held a series of technical leadership positions at Baker Hughes, most recently Global Lead of Reservoir Technical Services, covering North and Latin America, Middle East, and APAC regions, and including emerging geothermal technology evaluation and implementation. This rich background reflects her commitment to a holistic approach, spanning from subsurface insights to well construction and tailored surface geothermal facility design. Ghazal earned her Ph.D. from Penn State University, specializing in a range of topics including computational geomechanics, fluid transport in fractured and porous media, applied rock mechanics, and Advanced/Enhanced Geothermal Systems. Her profound expertise extends to authoring more than 40 technical papers. Ghazal’s industry leadership was recognized with the preeminent geothermal trade group, Geothermal Rising’s, “Henry J. Ramey, Jr. Geothermal Reservoir Engineering Award” in 2022.
AXEL-PIERRE BOIS, Ph.D.
Chief Technology Officer
Axel leverages more than 30 years of experience in geomechanics, wellbore integrity, completions design, and cement and rock testing in his leadership of XGS’ advanced geothermal technology development. Prior to XGS, Axel founded and served as CEO of CURISTEC, a technical advisory firm providing services in oil & gas, geothermal, and geologic storage industries. Axel is a leading expert in technology development and testing for extreme subsurface environments, including the superhot and supercritical conditions crucial for high-performance geothermal energy production. He holds a Ph.D. in Geomechanics from the Université de Sherbrooke, in Quebec, Canada.
LUCY DARAGO, Ph.D.
Chief Commercial Officer
Lucy is an accomplished leader with a robust background in energy and sustainability. Prior to XGS, Lucy served as a Principal at Boston Consulting Group (BCG), where she specialized in the Energy, Climate & Sustainability, and Public Sector practices. At BCG, Lucy led clean energy studies and investment strategies for renewable energy developers, utilities, integrated energy companies, and large-scale energy consumers globally. Lucy holds a Ph.D. in Chemistry from the University of California, Berkeley, where she authored over 25 technical papers in materials science for energy and computing applications. Her unique blend of technical expertise and strategic vision positions her as a driving force in advancing XGS’s commercial initiatives and expanding its impact in the renewable energy sector.
Lou Capuano Jr.
VICE PRESIDENT, DRILLING
Lou is one of the most experienced and respected drilling and well completion experts in the world. With over 350 geothermal wells drilled globally, Lou has profound experience in geothermal development including founding and building his own company, Capuano Engineering, into a multi-level service provider covering drilling rigs, geothermal well cementing, mud logging, a drilling mud company, and an exploration geologic and geophysical consultant company. Capuano Engineering was acquired by XGS Energy in 2024 and is continuing to provide world-class conventional and next-generation geothermal services under the brand “Capuano Engineering, an XGS Energy Company.” Lou has twice served as the President of the Geothermal Resources Council, known today as Geothermal Rising, the premier global trade group for geothermal.
Board Of Directors
Piotr D. Moncarz Ph.D., P.E., NAE
XGS Board Vice Chairman, Adjunct Professor, Stanford University, Former Senior Fellow and Principal Engineer, Exponent
Khalid Alsweilem, Ph.D.
Former Chief Counsellor and Head of Investment at SAMA, Visiting Scholar at Harvard, Stanford, and MIT
Martin S. Craighead
Former Chairman and CEO, Baker Hughes, Board Director at Emerson Electric and Texas Instruments
Ray Mabus
Former US Secretary of the Navy, Former US Ambassador to Saudi Arabia, Former US state governor
David Seldin
Co-founder and Managing Partner, Anzu Partners. Former NFL football team president with 35+ years of equity experience.
Glen Robinson
Vice President, Constellation, 30+ years in power industry finance, strategy, and operations
Joe Goodman, Ph.D.
Co-founder and Managing Partner, VoLo Earth Ventures, 20+ years experience in clean tech as three-time company founder, and at Rocky Mountain Institute, GE Energy
our investors and partners
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