A transmission line conductor is the essential component used for the bulk transfer of electrical energy from a power plant to a substation. These conductors operate at high to extra-high voltages (e.g., 110 kV, 220 kV, 400 kV) and are designed to carry large amounts of power over long distances with minimal loss. Unlike distribution conductors, which prioritize safety and cost for local delivery, transmission conductors must excel in three key areas:

1. High Tensile Strength: To withstand the conductor's own weight, wind, and ice loads over very long spans.

2. High Electrical Conductivity: To minimize energy loss (I²R losses) and maximize power transfer.

3. Low Weight: To reduce the structural load on the expensive and large transmission towers.