Sustainable Aviation Fuel Primer

Dr. Dees leads Relae's scientific advisory practice for the transportation fuel and industrial commodity sectors. He brings interdisciplinary expertise to the bioeconomy and bioenergy systems, bridging industrial ecology, economics, and climate policy to drive decarbonization. As a researcher, Dr. Dees explored the role of biomass as both an energy feedstock and a substrate for carbon removal (BiCRS), integrating technoeconomic analysis and life cycle assessment with market-enabling policy. His work has been featured in leading academic journals, including Environmental Science and Technology, Green Chemistry, and ES&T Water. Over a two-year collaboration with the Energy Systems team at Lawrence Livermore National Laboratory, Dr. Dees was a lead contributor to the US DRIVE Net-Zero Carbon Fuels Technical Analysis, evaluating the potential for ethanol decarbonization and the climate impacts of sustainable aviation fuels (SAF). At Relae, he directs an interdisciplinary team to provide strategic guidance at the intersection of transport fuels and heavy industry. He has spearheaded the development of industry-standard resources, including the Sustainable Aviation Fuel Primer and the Criteria for High-Quality Environmental Attribute Certificates for the steel and concrete sectors.

Dr. Friedmann is one of the most widely known and authoritative experts in the US on carbon removal (CO₂ drawdown from the air and oceans), CO₂ conversion and use (carbon-to-value), hydrogen, industrial decarbonization, green manufacturing, and carbon capture and sequestration.He served as Principal Deputy Assistant Secretary for the Office of Fossil Energy at the Department of Energy during the Obama Administration, where he was responsible for DOE's R&D program in advanced fossil energy systems, carbon capture, and storage (CCS), CO₂ utilization, and advanced power generation. More recently, he was a Senior Research Scholar at the Center on Global Energy Policy at Columbia. He has held positions at Lawrence Livermore National Laboratory, including Chief Energy Technologist.

A.J. Simon is a mechanical engineer and energy systems expert, whose passion for efficiency and insatiable curiosity has led to a 25+ year career spanning industry, academia and the US Department of Energy.

Prior to joining Relae, he managed the Energy Group at Lawrence Livermore National Lab where he led assessments of technologies as diverse as nuclear energy, carbon capture and removal, the energy-water nexus, hydrogen fuel, building energy efficiency, and soldier-portable power.

From 2003 to 2008, he helped to manage a large portfolio of university-led clean energy research at Stanford's Global Climate and Energy Project. From 2001 to 2003, he developed combustion and emissions control technologies for General Electric's diesel and gas turbine product lines.