Mark P. Mills is a founding partner in Digital Power Capital, the energy-tech affiliate of Wexford Capital.  He writes the Energy Intelligence column for Forbes and is co-author of the book, "The Bottomless Well: The Twilight of Fuel, the Virtue of Waste, and Why We Will Never Run Out of Energy" (Basic Books 2005, paperback 2006), and has been published in various popular publications, including the Wall Street Journal and the New York Times Magazine, as well as numerous professional publications. He has testified before the U.S. Congress and briefed many state public service commissions and state legislators. He is currently Chairman of the Board of International Battery (a DPC portfolio company), and is a member of the Boards of DPC portfolio companies EDSA Micro and Sago Systems. He previously co-founded and served as Chairman and CTO of ICx Technologies (another DPC portfolio company), and was a Board member of EYP Mission Critical Facilities (now a Hewlett Packard company). Mark is a member of the Advisory Council of the McCormick School of Engineering and Applied Science at Northwestern University.

Before founding Digital Power Capital with his colleagues, Mark was a technology advisor for Banc of America Securities, and a co-author of the successful energy-tech investment newsletter, the Huber-Mills Digital Power Report, published by Forbes and the Gilder Group. Earlier, Mark founded and ran an energy technology consulting business for 17 years. He served as a staff consultant to The White House Science Office (under President Reagan), a number of the Federal Research Laboratories, the (former) Congressional Office of Technology Assessment, and the U.S. Department of Energy. Mark was an experimental physicist and development engineer in the fields of integrated circuits during the early 1970s, the "Jurassic era" of microprocessors. He also worked in fiber optics, defense and solid-state devices, fields in which he holds several patents. Mark holds a degree in physics from Queen's University, Canada, and is a member of numerous professional societies including the American Physical Society and Institute of Electric and Electronic Engineers.