How to deal with increasing demands, network ageing, network extensions and decentralized (renewable) power generation? How to avoid huge capital expenditures and cut operational expenditures and still keep the lights on in today's competitive environment?

Power cables come in a variety of sizes, materials, and types, each particularly adapted to its uses. Moreover, apart from the cables itself, in a cable network one will find different types of joints and terminations (sealing ends) and especially these accessories have a large impact on the network reliability.

Underground power cables are divided into two categories:
- high-voltage power-transmission cables (69-500 kV)
- distribution cables (less than 69 kV), of which extruded solid dielectric cables dominate the 15-33 kV urban distribution system.