Overhead power lines and underground cables are the two primary methods for transmitting and distributing electricity. The choice between them depends on a variety of factors, including cost, reliability, environmental impact, and geographical location.

• overhead lines: These are conductors supported by poles or towers, running above ground. They are generally much more cost-effective to install and easier to inspect and repair. However, they are vulnerable to weather events (e.g., wind, lightning, ice storms), wildlife, and visual pollution.

• underground Cables: These are insulated conductors buried in trenches. They are visually unobtrusive and less susceptible to weather damage, making them a more reliable option in certain conditions. However, they have a significantly higher initial installation cost, are more difficult and expensive to locate and repair when faults occur, and can be affected by ground movement or digging.