Contribution of renewable energy to human life is essential for sustainable life on Earth. The renewable energy industry is growing rapidly to fulfill the energy demand of the continuously developing world and has become the focal centre of many researchers across the globe. This development should meet the needs of the present without compromising the ability of future generations to meet their own needs. Sustainable development ties together concerns for the carrying capacity of natural systems with the social challenges faced by humanity. This book is intended to highlight various aspects for applications of renewable energy and sustainability. This work is a collaborative attempt to elaborate useful technical information from many countries across the globe about the competent and effective use of renewable energy systems. This book presents theoretical and experimental analysis, case studies and models in renewable energy systems issues related to Solar Energy, Wind Energy, Bio Energy, Tidal Energy, Geothermal Energy, Fuel Cells, and Energy Storage Systems. This book also contains different considerations in order to develop products contributing to the sustainability of life.