Roland Hwang works at the state and national levels to advance energy efficiency, renewable power, and zero-emission vehicles. A noted expert on clean vehicle technologies, he has played an instrumental role in the creation and adoption of California and federal fuel efficiency standards. Prior to joining NRDC, Hwang served as director of the Union of Concerned Scientists' transportation program. He also worked on energy forecasting models at Lawrence Berkeley National Laboratory and as an air pollution engineer at the California Air Resources Board. He holds master's degrees in mechanical engineering from the University of California, Davis and public policy from the University of California, Berkeley. He is based in NRDC's San Francisco office.