Renewable Energy Technologies is a comprehensive guide to the utilization and application of the different sources of renewable energy, highlighting how these technologies can help to tackle environmental challenges and global warming, and to support energy transition with enhanced reliability, security, and resilience. Bioenergy, solar energy, wind energy, hydrogen, hydropower, marine energy, and geothermal energy are covered in various sections organized by energy type. Throughout the book, emerging technologies are discussed, such as energy storage and artificial intelligence, and pathways to the adoption of renewable energy are explored. Supported by clear definitions of key terms and phrases, chapter objectives and summaries, study questions, and case studies, this book supports all those looking to gain a fundamental understanding of renewable energy and related emerging technologies, including students, postgraduate researchers, faculty, engineers, industry professionals, and policy makers.