This book explores how digital innovation is transforming buildings into intelligent, flexible, and energy-responsive systems capable of supporting the clean energy transition. Through advanced applications of artificial intelligence, digital twins, optimization techniques, interoperability frameworks, and demand response strategies, this book presents practical and research-driven solutions for enhancing energy efficiency, occupant comfort, and grid flexibility.

This book combines theoretical insights with real-world case studies covering smart homes, district heating networks, HVAC coordination, renewable integration, policy frameworks, and AI-enabled energy services. Special attention is given to data quality, forecasting, user engagement, and scalable digital infrastructures for future energy ecosystems.

This book is intended for researchers, engineers, policymakers, energy professionals, and graduate students working in smart energy systems, sustainable buildings, and digital energy transformation.