The book "On Privacy-Preserving Protocols for Smart Metering Systems" offers a comprehensive analysis of current research findings on privacy-friendly protocols for smart grids. It discusses various approaches to privacy preservation and compares them both analytically and through simulations. A central theme of the book is asymmetric DC networks, which provide an optimal combination of performance and functionality compared to homomorphic encryption. Additionally, methods for data anonymization through cryptographic protocols and data obfuscation through noise injection or the installation of storage units are presented. The author explains how these theoretical concepts can be implemented in various application scenarios and highlights the connections between asymmetric DC networks and homomorphic encryption schemes. The book provides a solid understanding of the challenges in data protection within smart grid scenarios, as well as the mathematical and algorithmic approaches to address them.