Transmission lines are specialized conductors used to transport electrical energy over long distances. They connect power generation sources, such as power plants, to substations and ultimately to consumers. These lines are designed to minimize energy loss and maintain efficient power delivery. Typically made of materials like copper or aluminum, transmission lines can be overhead or underground. Overhead lines are supported by towers and are more common due to their lower installation costs. In contrast, underground lines are used in urban areas to reduce visual impact and protect against weather-related disruptions.