The rise in pollution is posing a threat to our environment. Technologies are being developed across the globe which are environment-friendly. Renewable resources are resources that can be renewed and have low carbon imprint. Some of the natural resources used for renewable energy include sunlight, tides, wind and rain. The aim of this book is to present topics that have transformed this discipline and aided its advancement. From theories to research to practical applications, case studies related to all contemporary topics of relevance to this field have been included herein. It will serve as a reference to a broad spectrum of readers including environmentalists, engineers, researchers, professionals and students associated with this area of study.