What is a primary function of transmission lines?

The primary function of transmission lines is to carry electrical energy from power plants to substations. This infrastructure is essential for transferring high-voltage electricity over long distances to ensure that it reaches substations, where the voltage can then be stepped down for distribution to consumers.

Transmission lines are designed to handle large quantities of electricity generated by power plants, which could be fossil fuel, nuclear, or renewable energy sources. They play a crucial role in the overall electric grid, ensuring that electricity generated in one location is efficiently delivered to areas where it is needed, thereby maintaining the balance of supply and demand across the network.

The other options mention important functions within the electricity ecosystem, such as distributing power and connecting renewable energy sources, but they do not describe the primary role of transmission lines in the larger context of the electrical grid. Additionally, measuring energy consumption is a function of metering equipment, not the transmission lines themselves.