Ashley Langer is an Assistant Professor of Economics at the University of Arizona who conducts research at the intersection of energy economics and industrial organization. In order to better understand how to craft efficient environmental policies, Professor Langer studies how individuals and firms make decisions that affect the environment. She has worked on how drivers choose which vehicles to purchase, how much and how aggressively to drive those vehicles, and where to purchase gasoline. Professor Langer has looked at how manufacturers change vehicle prices in response to gasoline price changes. In research on the effect of government policy on the environment, Professor Langer has studied how congestion tolling would affect urban land use and how highway spending affects congestion. In new research, Professor Langer looks at how the evolution of residential solar subsidies over time can drastically impact their cost-effectiveness. Her research informs policies from taxes on gasoline, vehicle miles traveled, and congestion to subsidies for alternative fueling stations and solar panel installation. Professor Langer has an undergraduate degree from Northwestern University and a PhD from the University of California, Berkeley. She has previously worked at the Brookings Institution and the Ford School of Public Policy at the University of Michigan.