The book covers in detail a range of future-oriented developements in the field of high and extra-high voltage cables. These include cross-linked polyethylene-insulated cables for up to 525 kV to supersede conventional oil/paper-insulated cables, power cables with high-temperature superconductor for underground transmission of substantial volumes of energy, and gas-insulated tubular conductors as a possible alternative for overhead lines. In addition to these innovative technologies the book also of course describes the designs of all today's customary high and extra-high voltage cables, includes, including oil/paper-insulated and gas-filled types, and the components required to keep the systems working. The book provides information on cable characteristics, cable construction, materials and manufacturing technology, quality assurance, developement and dimensioning of cables, and also on scope and restrictions in the forecasting of service life with solid insulants. It is intended for engineers and technicians from power supply corporations and the cable industry, and, with its wealth of fundamental information, is ideal too for teachers and students of electrical engineering.