This book explores how anti-nuclear social movements impact the state’s civil nuclear policy and its implementation by presenting a historical-comparative case study of anti-nuclear movements in India. Drawing on social movement theory and empirical methods, the book demonstrates that the ability for anti-nuclear movements to impede the inception of nuclear plants – a key element of India’s civil nuclear policy – is determined by the movement’s collective action repertoires, the politicisation of nuclear power and the state’s larger developmental paradigm, and the openness of state input structures. The case studies of anti-nuclear movements in Haripur, Kudankulam and Kovvada demonstrate how the implementation of civil nuclear policy is also determined by the state’s technical and financial capacity and effective international collaboration. With a focus on theorisation of social movements and their impact, combined with empirical studies of anti-nuclear movements, as well as the historical trajectory of civil nuclear development, the book adds a new prism to the study of India’s civil nuclear policy and anti-nuclear opposition. It will be of interest to researchers working on social movements, state-society relations, energy studies and civil nuclear energy in the context of South Asia and the Global South.