Against the background that traditional business models of the energy industry are becoming obsolete in the face of digitization and decentralization, Oliver D. Doleski describes the epoch-making process of change from a monopoly supply company to a digital energy service company. The compact book not limited to the pure description of the transformation process. Rather, it also offers the reader a concise overview of profitable fields of activity of digital energy service companies (Utility 4.0) as well as an application-oriented method for realizing new business ideas in the digital energy world of tomorrow. The book closes with an intuitively understandable guide to the practical implementation of digital transformation in the energy industry.