Abstract :
This paper presents the need for compatibility between European rail networks. This leads to the adoption of dual 25 kV as the power of choice for operators. Dual 25 kV literally doubles the power available to rail networks, helping rail operators to meet some of the demands they are facing. Not surprisingly, this fact, along with the EU directive on ´interoperability of the trans-European high speed rail system´, which aims to ease the circulation of high-speed trains through the various train networks of the European Union, will lead it to become the future standard across Europe