Arun Majumdar, faculty co-director of Bits & Watts, is a professor of mechanical engineering and co-director of Stanford’s Precourt Institute for Energy. Arun was the founding director of the U.S. Department of Energy’s Advanced Research Projects Agency-Energy (ARPA-E) and acting undersecretary of energy. His research focuses on the science and engineering of energy conversion, transport and storage, and re-engineering the electric grid. Before joining Stanford, Arun was the vice president for energy at Google. Previously, he was a professor at UC-Berkeley and the associate laboratory director for energy and environment at Lawrence Berkeley National Laboratory.