Prior to joining the faculty at Maryland in 2017, she was an assistant professor in energy economics at Arizona State University. She was a visiting scholar at Resources for the Future in the summer of 2014. Lucy received her Bachelor's degree from Tsinghua University and Ph.D. from Stanford University. Her research interest is on energy economics and policy, with a focus on the economics of energy efficiency and renewable energy, including the analysis of the international diffusion of clean energy technologies, analysis of consumer and corporate behaviors and the adoption of clean energy technologies, evaluation of the technological and economic performance of energy efficiency and renewable energy, and energy policy evaluation. She conducts research in both United States and East Asia including China and Japan.