Arnold Leitner

Arnold is a solar and clean-tech pioneer who designed and built one of Germany’s first super-efficient passive houses. Arnold later moved to the United States to get his doctorate in physics at the University of Colorado at Boulder and work in solar. As a consultant for S&P Global, he authored the seminal and influential study Fuel from the Sky for the U.S. Department of Energy (DOE). As a result of his work, Arnold received an “extraordinary ability” green card and later became a U.S. citizen. While at Columbia Business School, Arnold founded SkyFuel and re-invented concentrating solar power technology. SkyFuel’s high-precision parabolic trough won an R&D 100 Award and was featured by NREL as one of the major clean-tech accomplishments.