Abstract: This article compares the different trajectories of nuclear power policy in Japan, Taiwan and Korea in the post-Fukushima era. The Fukushima nuclear accident ratcheted up the level of contention between civil activism and supporters of nuclear power in all three states. The result of this contention has been decided by the combined effects of two factors – interest structure (complexity vs simplicity) and politicisation (national level vs local level). In terms of scope, policy change has taken place in Taiwan, Japan and Korea in that order. This analysis contributes to a balanced understanding of both structural constraints and the political process in which each actor, and in particular civil activism, is able to manoeuvre.