In a growing debate about the smart city, considerations of the ways in which urban infrastructures and their materialities are being reconfigured and contested remain in the shadows of analyses which have been primarily concerned with the management and flow of digitalisation and big data in pursuit of new logics for economic growth. In this paper, we examine the ways in which the 'smart city' is being put to work for different ends and through different means. We argue that the co-constitution of the urban as a site for carbon governance and a place where smart energy systems are developed is leading to novel forms of governmental intervention operating at the conjunction of the grid and the city. We seek to move beyond examining the rati...