The Mekong Basin is home to some 70 million people, for whom this great river is a source of livelihoods, the basis for their ecosystems and a foundation of their economies. But the Mekong is also currently undergoing enormous social, economic, and ecological change of which hydropower development is a significant driver. This book provides a basin-wide analysis of political, socio-economic and environmental perspectives of hydropower development in the Mekong Basin. It includes chapters from China, Thailand, Laos, Cambodia and Vietnam. Written by regional experts from some of the region's leading research institutions, the book provides an holistic analysis of the shifting socio-political contexts within which hydropower is framed, legitimised and executed. Drawing heavily on political ecologies and political economics to examine the economic, social, political and ecological drivers of hydropower, the book's basin wide approach illuminates how hydropower development, and its benefits and impacts, are linked multilaterally across the basin. The research in the book is derived from empirical research conducted from 2012-2013 as part of the CGIAR Challenge Program on Water and Food's Mekong programme.