Traditional analysis of China's policy experimentation has focused on the role of central–local relations and rotating leaders in shaping the local agenda-setting process. Less is known about the role of less mobile mid-level local bureaucrats who serve as bridges in the implementation process. This paper examines why some cities have performed better than others at implementing and maintaining low-carbon policy experiments. Drawing on a comparison of four case cities and over 100 expert interviews, I argue that the availability of bureaucratic entrepreneurs and their resource mobilization capacity determine the level of local engagement in climate policy experimentation. This study shows that the institutionalization of local policy experiments is not only driven by the central government or rotating top local leaders but also by bureaucratic entrepreneurs who help policy experiments survive periodic changes in the bureaucracy. The findings have important implications for the fulfilment of China's 2060 carbon neutrality pledge.
