What is a typical voltage for the largest transmission lines used by North American utilities?

The largest transmission lines used by North American utilities typically operate at 765 kV. This high voltage level is designed to efficiently transport large amounts of electrical power over long distances with minimal losses due to resistance. The choice of using 765 kV allows utilities to deliver electricity from generation sources, often located far from populated areas, to urban centers where demand is high.

While 345 kV and 500 kV lines are indeed utilized in transmission systems, they do not represent the highest standard in North America for large-scale transmission. The 1,000 kV option, although it exists in some other parts of the world, is not common in North America. Therefore, 765 kV is recognized as the industry standard for the largest transmission lines within the region.