Principles of Sustainable Energy Systems

Charles F. Kutscher is a fellow of the Renewable and Sustainable Energy Institute (RASEI), a joint institute between the University of Colorado Boulder (CU-Boulder) and the National Renewable Energy Laboratory (NREL). He served as the Director of the Buildings and Thermal Sciences Center at NREL from 2013 until his retirement in 2018. He has worked in the field of renewable energy for over four decades, during which time he has led research investigations on solar heating and cooling, building energy efficiency, solar industrial process heat, geothermal power, and concentrating solar power. He is a fellow of the American Solar Energy Society (ASES) and served as the Society's chair in 2000 and 2001. He was the chair of two major conferences: the SOLAR 2006 National Solar Energy Conference and the 2012 World Renewable Energy Forum. He led the ASES study, Tackling Climate Change in the U.S., which detailed how energy efficiency and six renewable energy technologies could greatly reduce U.S. carbon emissions by 2030. He also served as the lead author of the RASEI study, Accelerating the US Clean Energy Transformation: Challenges and Solutions by Sector. He has served as an Adjunct Professor at the University of Colorado Boulder and the Colorado School of Mines. He earned a BS in Physics from the State University of New York at Albany, an MS in Nuclear Engineering from the University of Illinois at Urbana-Champaign, and a PhD in Mechanical Engineering from the University of Colorado Boulder. He is a registered professional engineer in California and Colorado.

Jana B. Milford is an Emeritus Professor in the Department of Mechanical Engineering and the Environmental Engineering Program at the University of Colorado at Boulder, where she worked from 1994 to 2022. Her research and teaching interests have focused on air quality modeling and data analysis, environmental impacts of energy systems, and environmental law and policy. She has also worked as a congressional fellow and analyst at the Congressional Office of Technology Assessment, Assistant Professor in the Department of Civil Engineering at the University of Connecticut, and a senior scientist and staff attorney at the Environmental Defense Fund. She has served as a member of the Colorado Air Quality Control Commission, the Board of Environmental Studies and Toxicology of the National Academy of Sciences, the Science Advisory Board of the U.S. Environmental Protection Agency, and the Review Committee of the Health Effects Institute. She holds a BS in Engineering Science from Iowa State University, a MS in Civil Engineering from Carnegie Mellon University, a PhD in Engineering and Public Policy from Carnegie Mellon University, and a JD from the University of Colorado School of Law.

Frank Kreith taught at the University of California, Lehigh University, and the University of Colorado, as a Professor Emeritus of Engineering. From 1988 to 2001, he was the American Society of Mechanical Engineers International (ASME) legislative fellow for Energy and Environment at the National Conference of State Legislatures (NCSL) where he provided assistance on energy, transportation, and environmental protection to legislators in all 50 state governments. Prior to joining NCSL in 1988, Kreith was the chief of thermal research at the Solar Energy Research Institute (SERI), currently the National Renewable Energy Laboratory. During his tenure at SERI, he participated in the Presidential Domestic Energy Review, served as an energy advisor to the Governor of Colorado, and was the editor of the ASME Journal of Solar Energy Engineering. He was the author of over a hundred peer-reviewed articles and textbooks on heat transfer, solar energy, and transportation. He was the recipient of the Charles Greeley Abbot Award from the American Solar Energy Society and the Max Jakob Award from ASME-AIChE, and in 1997, he received the Washington Award for "unselfish and preeminent service in advancing human progress." In 1998, Kreith was awarded the ASME Medal for research, publications, and public service, and in 2004, he was named ASME Honorary Member. In 2005, the ASME established the Frank Kreith Energy Award in recognition of Kreith's contribution to heat transfer and renewable energy.