October 22, 2025
Journal Article
To achieve deep cuts in U.S. emissions, state-driven policy is only slightly more expensive than nationally-uniform policy
Abstract
This is a policy brief article (brief summary) of a study that was recently published in Nature Climate Change. Using a multi-sector model of human and natural systems, we find that the nationwide cost from state-varying climate policy in the United States is only one-tenth higher than that of nationally uniform policy. The benefits of state-led action — leadership, experimentation and the practical reality that states implement policy more reliably than the federal government — do not necessarily come with a high economic cost.Published: October 22, 2025