Why does pylons carry huge voltage but low current?

Pylons carry high voltage and low current to efficiently transmit electrical power over long distances. High voltage reduces the energy lost as heat due to resistance in the transmission lines, allowing more power to be delivered with less energy loss. By using low current, the infrastructure can be made lighter and less expensive, as lower current levels require smaller conductors and reduce the risk of overheating and line sagging. This combination enhances the overall efficiency and safety of the power transmission system.