This book discusses the main features, fundamental principles, and application areas of blockchain technology. It explains how this technology can contribute to the electricity market by enabling the implementation of new business models and new energy scenarios. The first chapter is an introductory section which covers the basic elements for framing the blockchain in the different application fields. The following chapters describe the various phases of the Italian electricity market and the players involved in each phase, the new business models and the main regulations; the features of blockchain that are useful for the energy system; and the integration of a blockchain platform for the execution of Demand Response events in an existing power grid. In the fifth chapter the results of the experimental implementation of the architecture described previously are presented, and in the final chapter the BloRin project is presented, which aims to create a blockchain-based platform for renewable energy deployment and energy exchange management. The volume targets graduate students, researchers and practitioners, and addresses the development of a new methodology for the implementation of energy services using blockchain technology, providing a guide in the blockchain area for the energy sector.