Louis Preonas is an associate professor in the Department of Agricultural and Resource Economics at the University of Maryland, College Park. He is an energy and environmental economist. Much of his research focuses on interacting market distortions in U.S. energy markets, including market power in U.S. coal transportation. He also works at the intersection of environmental and development economics, focusing on the economics of rural electrification and wholesale electricity supply in India. He also studies the intersection of energy, water, and agriculture in California, estimating how farmers respond to increased groundwater pumping costs and extreme heat. Preonas holds a Ph.D. from the University of California, Berkeley and a B.A. from the University of Michigan.