See that red triangle shaped bar??
It carries 25 Kilovolts!!
The high speed line was constructed at standard gauge, in contrast with the rest of the Spanish railway network. Voltage is 25 kV AC instead of 3000 V DC. Twelve transformers feed the overhead wires. Some 8 kilometers (5.0 mi) before the start and end points of the line, the line merges with local DC tracks.