What are Overhead Power Transmission Lines (OHTL) and what is their primary purpose?

Overhead Power Transmission Lines (OHTL) are systems of electrical conductors supported by towers or poles that transmit electrical energy over long distances. Their primary purpose is to efficiently deliver bulk electricity generated at power plants to substations, where it is then distributed to consumers. OHTLs are a critical backbone of modern electrical grids, ensuring reliable power supply across vast geographical areas.