Nan Ransohoff is Head of Climate at Stripe, where her team is working to kickstart a market for permanent carbon removal. She leads Stripe Climate as well as Frontier, a $925M advance market commitment to accelerate carbon removal. Prior to Stripe, Nan led product and business teams at Opower, Nest, Uber, and most recently at Nuro as Head of Product. She received her BA from Harvard University and her MBA from Stanford Graduate School of Business.

Matt Jamieson serves as a Senior Life Cycle Analyst at the Department of Energy’s National Energy Technology Laboratory (NETL), as part of the life cycle analysis competency within the Strategic Systems Engineering Analysis directorate. Matt has been performing life cycle analyses of complex energy systems at the lab for 10 years and has contributed to a number of publicly available tools, reports, and peer-reviewed articles. Matt holds a B.S. in Mechanical Engineering from the University of Minnesota – Duluth.

Rafael manages Microsoft’s carbon removal program and has worked on that program since 2020. In that role, he reviews projects across technical approaches, from soil carbon up to direct air capture, for their quality, potential, and cost as Microsoft builds its portfolio. He previously developed climate strategies at the Paul G. Allen Family Foundation, including on carbon removal, and started his career working on foreign affairs. He holds a BA (International Relations) from Tufts University and is based in Seattle, USA.

Gregory Hackett is a Research Engineer within the Research and Innovation Center, Strategic Systems Analysis and Engineering directorate at the National Energy Technology Laboratory (NETL), U.S. Department of Energy, located in Morgantown, WV.  Dr. Hackett has been an employee at NETL since 2014, leading system-level analysis of energy technologies, with a focus on techno-economic analysis of carbon conversion, point source carbon capture for power applications, and solid-state electrochemical cell technologies.  He received his B.S., M.S., and Ph.D. in Chemical Engineering from West Virginia University in 2004, 2006, and 2009, respectively.  Thesis topics involved direct carbon fuel cells and solid-state electrochemical cell performance degradation analysis. Dr. Hackett has several published manuscripts in the field of solid-state electrochemistry in peer-reviewed journals such as Solid State Ionics, Electrochemical Society Transactions, Journal of Power Sources, and Metallurgical and Materials Transactions E.