Energizing Waste: The Circularity Way explores innovative waste-to-energy (WtE) solutions that transform non-recyclable waste into clean energy while reducing operational costs. Featuring ReGen technology, which delivers 332 kW of net energy per ton of waste at a cost of under $1/kWh with a 6-8-year payback period, the book is grounded in the 10Rs principles of circular economy. It establishes strong linkages among waste-to-energy (WtE), environmental quality (EQ), and sustainable development (SD), offering scalable, evidence-based strategies for stakeholders to advance circular economy practices. Key features include: Examine the paradigm shift from a linear to a circular economy, minimizing environmental impacts and resource waste through increased efficiency across all stages of the value chain Presents a novel plug-and-play, climate-smart, energy-independent modular power generation system called Renewable Energy Recovery Generation (ReGen) Advances circularity through practical applications of waste materials, extension of product lifespans, and smarter product design, use, and manufacturing Explores a multidimensional and transdisciplinary approach linking environmental, economic, and social dimensions of the United Nations Sustainable Development Goals (SDGs) Integrates circular economy technologies, resource and energy assessments, and socio-economic analyses with innovative WtE technology design concepts, alongside evaluated resource and energy use This book is intended for researchers, graduate students, and professionals in environmental engineering, waste management, climate studies, and related fields.