The most common way energy is transmitted through a city is by overhead energy transmission network lines. A major benefit of overhead power lines is that it has much lower costs than undergroud transmission. Some of the disadvantages is that overhead transmission lines are likely to be affected by adverse weather conditions, which can lead to power outages.
This FACT indicates the total length of energy transmission networks (overhead lines) in kilometres in each state. This number is represented in thousands. The state with the largest amount is New South Wales at 254,601 km of overhead network lines. The state with the fewest thousands of kilometres is the Northern Territory at 5,167 km of network lines. The data is from the years 2014 to 2015.