This book is a comprehensive guide navigating the complex issues of energy and productive efficiency in polymer processing. From foundational energy concepts in industry to in-depth analyses of consumption patterns, the book introduces Monitoring and Targeting methodologies and innovative approaches like the Energy Gap Method. It explores strategies to bridge identified energy gaps, offering practical insights. Real-world case studies showcase successful applications of these methods. The book culminates in a forward-looking exploration of digitalization and artificial intelligence as tools to revolutionize polymer processing, making it an essential resource for professionals, researchers, and students seeking practical knowledge in energy optimization.