Abstract
The purpose of this study is to examine the effect of constitutional power concentration on adaptation to climate change in 113 countries observed between 1995 and 2023 using the quantile regression method. The results reveal that the concentration of constitutional power hinders countries' adaptation to climate change through inequalities, government integrity, and voice and accountability. The link established withstands various robustness tests. These results invite action by policymakers to accelerate the establishment of a more decentralized system of political authority to integrate individuals who are directly affected by climate change into decision-making. This will facilitate the implementation of measures adapted to local realities and supported by all.