Hydropower is the power derived from the energy of falling water or fast-running water (as in rivers). Hydropower has been and continues to be a magnificent source of renewable and clean energy for electrical power generation worldwide. It has a long track of successful and reliable power generation. It is a conventional renewable energy source for generating electricity in small-, medium- and large-scale production. This book, titled Advances in Hydropower Technologies, presents and discusses unique topics in hydropower technologies, such as: the performance and design aspects of hydro-turbines; hydroelectric power plants and their sustainability; design, operation and efficiency of hydropower plants; pumped hydropower storage; emergence analysis of novel hydroelectric energy markets; hydropower plants modelling, simulations and management; current and future trends of hydropower policies; and more. This book will be of great value and a beneficial source of information for advanced research for researchers, academicians, policymakers, designers, engineering practitioners, and technologists in the area of hydropower.