Smart home technologies promise to transform domestic comfort, convenience, security, and leisure while also reducing energy use. However, delivering on these potentially conflicting promises depends on how they are adopted and used in homes. This book starts by developing a new analytical framework for understanding smart homes and their users. Drawing on a range of new empirical research combining both qualitative and quantitative data, the book explores how smart home technologies are perceived by potential users, how they can be used to link domestic energy use to common daily activities, how they may (or may not) be integrated into everyday life by actual users, and how they change the nature of control within households and the home. The book concludes by synthesizing a range of evidence-based insights and posing a series of challenges for industry, policy, and research.