This book provides a comprehensive analysis of Africa&s evolving role in sustainable energy, focusing on waste management, renewable energy, and green hydrogen production. Featuring predominantly African-led research, it highlights cutting-edge innovations driving the continent&s green transition. Drawing from research presented at the Second International Conference on Circular Economy, Renewable Energy, and Green Hydrogen in Lomé, Togo, in October 2024, the book explores key areas shaping Africa&s energy landscape. It examines waste-to-energy technologies that transform waste into valuable resources, supporting both environmental sustainability and the circular economy. It also addresses the development of decentralized and hybrid renewable energy solutions designed to meet the growing demands of expanding urban populations. Additionally, it discusses the latest technological advancements, including predictive analytics and off-grid performance optimization, enhancing energy efficiency and system flexibility across the continent. Beyond technical advancements, the book explores the social and economic dimensions of sustainability, analyzing how green innovations drive economic growth, create jobs, and promote social equity. It serves as an essential resource for researchers, policymakers, and practitioners seeking insights into Africa&s green transition and its increasing influence in the global shift toward sustainable energy solutions.