Macmillan is a Precourt Energy Scholar and Adjunct Professor at Stanford University. Prior to his current role, he was a Chief Scientist at the National Renewable Energy Laboratory, Consulting Professor at Stanford University, an advisor to founders of energy-related startups and on the founding teams of numerous technology ventures. He has been co-teaching the Energy Transformation Collaborative classes for the past several years. Currently Stuart is focused on new technologies, business models and innovation models that can accelerate the transformation of global energy systems and the services they enable. He holds an M.S. and Ph.D. from Stanford University.