Our Team

The driving force behind Geothermal Technologies

About Us

Geothermal Technologies has been working tirelessly to develop innovative and sustainable solutions to fix the global energy crisis. Until now, attempts at widespread thermal harvesting using manufactured synthetic or Enhanced Geothermal Systems (EGS) have been decidedly unsuccessful as measured by forty years of effort and over one billion dollars of investment. Our mission is to furnish a means of providing access to a virtually limitless supply of clean, economically competitive geothermal energy.

J. Gary McDaniel

Chief Executive Officer

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Jim Hollis

Chief Operating Officer

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Dr. Bruce Marsh

Chief Science Officer

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Dr. Stephen Browne

Board of Directors

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Dr. Roy Kligfield

Business Advisor

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John C. Cook

Director, Capital Acquisition

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Dr. Saman Karimi

Scientific Advisor

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Robert Duncan

Regulatory Advisor

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J. Gary McDaniel

J. Gary McDaniel, a chemical engineer with an MBA, has 30+ years of P&L experience and proven success in planning and executing investment funding, rapid growth, global expansion, product/market diversification, and financial turnarounds.

McDaniel’s career has spanned the specialty chemical, petroleum refining, and solar photovoltaic industries with companies such as W.R. Grace, Akzo Nobel, and Honeywell UOP. A “serial CEO”, he has now led 6 start-up/early-stage companies, several to successful exit, that aggressively pursued emerging trends and opportunities in advanced materials, nanotechnology, environmental catalysis, power electronics, fuel cells, renewable energy, water treatment/purification, and other high-tech fields.

Jim Hollis

Jim’s career has focused on introducing and commercializing game-changing exploration technology advancements within the Oil and Gas and Mining industries including innovations in seismic imaging, wireless nodal seismic acquisition, software development and visualization, and machine learning enhanced resource exploration. Before joining the GTI team Jim was the Founder, President and Chief Executive Officer of NEOS GeoSolutions, a Silicon Valley based technology company focused on applying ML and AI to facilitate the exploration workflow and reduce uncertainties. Prior to NEOS, Jim was President and Chief Operating Officer of ION Geophysical Corporation where he was responsible for the growth and financial execution of all ION business units, including multi-client data acquisition, data processing (GX Technologies), seabed and cable-less seismic imaging, and integrated seismic solutions. Prior to joining ION, Jim was General Manager of Exploration and Development Solutions for Landmark Graphics, a software solution subsidiary of Halliburton. Jim began his career exploring for oil and gas with Mobil Exploration and holds a BS in Geophysics from the University of California, Santa Barbara and an MS in Geophysics from the University of Utah.

Dr. Bruce Marsh

Dr. Bruce Marsh, a Professor Emeritus and Academy Professor at Johns Hopkins University (45 yrs.), is a world-renowned expert in the physics and chemistry of planetary magmatic processes including geothermal energy and planetary volcanism. He is the lead and co-author of over 250 peer-reviewed papers and abstracts illuminating the fundamentals of Earth processes and a past/present member of 6 editorial boards, including the “Journal of Volcanology and Geothermal Research” and “Physics of the Earth and Planetary Interiors”.

Dr. Marsh is an elected Fellow of the American Geophysical Union, Geological Society of America, Mineralogical Society of America, and the Royal Astronomical Society. He has served as an advisor to leading universities and institutions including Stanford, Rice, Princeton, Columbia, Smithsonian, Nuclear Regulatory Commission, NASA, AGU, and NSF. And, he has led expeditions to Antarctica (9), Aleutian Islands (10), and many other areas across the globe.

Dr. Stephen J. Browne

Dr. Stephen J. Browne is an experienced CEO, business executive, entrepreneur, and economist, with a long career building successful businesses in innovative, high technology disciplines. Dr. Browne has a Ph.D. in Economics from MIT and an AB in Economics from The Johns Hopkins University.

Dr. Browne is Chairman, CEO, and President of The Stanton Group, which he founded in 1986 to develop independent (privately owned) power plants and to promote new energy technologies. After developing renewable, waste to energy, and conventional facilities in the USA, culminating in a $250 million combined cycle gas power plant that subsequently was purchased by a major electric utility, in the early 1990’s Stanton moved its focus to developing energy projects in the Former Soviet Union and Eastern Europe, and then in the 21st Century began working intensively in China and with bringing advanced Chinese technologies to global markets.

Dr. Roy Kligfield

Roy Kligfield has a background as both an academic research scientist and a successful serial entrepreneur. He was a Research Professor in Geophysics & Geology at the ETH Zurich (1978-1981), a Professor of Geology at the University of Colorado (1981-1992) where he led research, teaching and industrial consortium efforts in petroleum and structural geology and has authored numerous peer-reviewed professional papers and talks on these subjects. He subsequently led business start-ups: Geo-Logic Systems (earth model software sold to oil and gas companies for use in seismic interpretation), SignalSoft (mobile location services for the international wireless telecommunications industry), OpenLogic (management software to facilitate the use of open source software within enterprises), and Wireless Seismic, a company making a wireless network seismograph for use in seismic exploration worldwide and for hydraulic fracture monitoring. Recently, he led a group using non-seismic geophysical methods to help identify locations, and to drill for oil in the Smackover play of southwest Alabama. Roy led or helped lead the successful funding efforts which have collectively brought in approximately $200 million into these companies through a combination of private equity investment, venture capital and IPOs. In his executive management positions, Roy has supervised organizations from start-up through 150 persons and provided strategic direction and tactical leadership in these endeavors.

John Cook

John Cook joined GTI following his 34 year career as Director of the Principal and Major Gift program for the Johns Hopkins University. Earlier in his career he Directed the University and Hospital Annual Giving program. Working with alumni, friends, and Family Offices, John raised over $150,000,000 while building leadership volunteer programs for alumni and the Baltimore community.

Dr. Saman Karimi

Saman Karimi is a geophysicist at Johns Hopkins University with broad interests in Earth and Planetary Sciences. Part of his research is geared toward enhancing the efficiency of geothermal systems in producing clean renewable energy, while other part is focused on better understanding the thermal/structural evolution of planetary bodies. Currently, he is an Assistant Research Scientist at Johns Hopkins University, after having graduated from the University of Illinois at Chicago with a doctoral degree in Geophysics/Planetary Sciences..

Robert Duncan

Robert Duncan has lived and practiced law in Colorado for many decades, after emigrating from New York. He was an Assistant Attorney General in the early part of his career and represented a variety of executive departments. Since then, he had a law firm in the private sector, where he represented and successfully worked with a wide variety of private and public entities. He was an integral part of a ‘start-up’ public highway authority, which built a beltway around Denver without using any federal funds, unprecedented at the time. His work involves counseling and guiding his clients through a myriad of local, state and federal laws and regulations.