When planning an industrial power supply system, the specific requirements of the manufacturing process determine the design and operation of the network, as well as the selection and sizing of the operating resources. Since the real technical risks are often hidden in the complexities of the planning task, planning decisions must be made with particular responsibility and caution due to their complex impacts on supply quality and energy efficiency. This book is aimed at engineers and technicians in the industrial energy sector, in industrial companies, and in planning offices. It provides foundational knowledge in network and plant engineering for the planning, construction, and operation of safe and economical industrial networks. It also allows students and recent graduates to familiarize themselves with the field. Simple and understandable.