What is the main objective of transmission lines?

The main objective of transmission lines is to deliver power with a minimum of loss. Transmission lines are designed to transport electricity over long distances from generation sources to distribution points where it can be utilized by consumers. Minimizing energy loss during this process is crucial since electricity can dissipate as heat due to resistance in the conductors, especially over long distances. By using high voltage levels, transmission lines can reduce the current for the same power transfer, which significantly minimizes losses according to Joule's law.

This approach allows for efficient energy transport, ensuring that a greater amount of the produced energy reaches its destination. Other options like generating power locally, converting high voltage to low voltage, or storing energy, do not primarily relate to the fundamental purpose of transmission lines, which is focused on effective energy delivery.