Transmission and distribution lines are the two primary components of the electrical grid responsible for delivering electricity from power plants to end-users. While they both carry electricity, their functions, voltage levels, and the types of equipment used are distinctly different.

• transmission lines: These are the "interstate highways" of the electrical grid. They transport high-voltage electricity over long distances from generating stations to substations. You typically see them on large, tall steel towers.

• Distribution Lines: These are the "local roads" of the electrical grid. They carry lower-voltage electricity from substations to homes and businesses. These are the lines you most commonly see on utility poles in residential areas.