Alternative energy has emerged as an area of interest worldwide. The vision of producing fresh, sustainable power from renewable energy sources is becoming a significant subject. This is accelerated by current technological advancements that have enhanced the cost-effectiveness of many renewable sources and by the rising concern for the ecological impact and sustainability of conventional fossil and nuclear fuels. This book presents a complete comprehension of the primary renewable energy sources with a broad variety of case studies for each source. It explains the physical and technical facets, and examines the ecological impact of renewable sources and their potential prospects.