To offer a fresh angle on the state capacity to advance decarbonization, this article brings into dialog political economies of scale and the Mannian notion of state infrastructural power, animating this conceptual cross-fertilization with an analysis of China's evolving policy framework for decarbonization. This article begins with building the conceptual construct of scalar practice as a source of state infrastructural power and categorizing three key scalar practices, namely, interscalar rearranging, interregional reshuffling, and urban-rural scalar mixing. Building upon this, the article critically evaluates China's policy framework and state actions against the notion of infrastructural power: the Chinese state applies noncoercive means to elicit support, extract resources, and coordinate actions while transitioning to decarbonization-driven accumulation regimes, and these noncoercive means are mobilized together with coercive means through the art of scalar structuration that (re)defines central-local, urban-rural, and interregional relations. Overall, this study elucidates how state-orchestrated processes of (re)territorialization for the decarbonization agenda give rise to the expansion of the state's autonomous power in relation to civil society, albeit in a manner that manifests contested power struggle and conflicting internal logics.