Professor Konishi specializes in empirical microeconomics and environmental economics. His research combines economic theory, causal inference, structural estimation, and data science to produce empirical evidence that can inform the design of environmental policy in Japan and beyond.

A defining feature of his work is its integration of three elements: theory-based modeling of how firms and consumers respond to economic incentives; causal inference to identify what policies actually change; and structural estimation to evaluate what would happen under alternative policy designs. His research spans a wide range of topics, including carbon pricing, emissions trading, electricity markets and battery storage, ride-sharing and the environment, economic geography and the environment, and innovation and environmental policy.

By carefully examining institutional details and using large-scale data at the city, firm, product, and market levels, his work sheds light not only on the effects of environmental policies, but also on the mechanisms behind them—such as firms’ technology choices, consumer behavior, urban travel behavior, and changes in industrial structure across cities. His research has been published in top field journals in environmental economics, applied microeconomics, urban economics, and health economics, including Journal of Environmental Economics and Management, Journal of the Association of Environmental and Resource Economists, Journal of Urban Economics, and Journal of Health Economics. Through this work, he provides evidence that helps design environmental policy based on economic mechanisms and rigorous empirical analysis.