Book excerpt: Through Waste-to-Energy (WtE) technology, plants use waste as a renewable fuel to co-produce electricity, heating, and cooling for urban utilization. This professional book presents the latest developments in WtE technologies and their global applications. The first part of the book covers thermal treatment technologies, including combustion, novel gasification, plasma gasification, and pyrolysis. It then examines 35 real-world WtE case studies from around the world, analyzing technical information behind planning, execution, goals, and national strategies. Results through the years show the benefits of the technology through the life cycle of the products. The book also examines financial and environmental aspects.