Electricity is moving energy that travels from place to place. For example, it can take energy of the burning coal as electricity in your home. Electricity is so extensively required by us in our daily lives that ways had to be found to let this energy travel.
Giant masts called pylons have been erected all over the country, which are connected by powerful electrical cables. Energy travels down these cables at about 250,000 kilometers in a second, almost at the speed of light.
Below Pylons info from Wikipedia (Read More):-
An electricity pylon or transmission tower (also known as Ironmen in Australia and hydro tower in Canada) is a tall, usually steel lattice structure used to support overhead electricity conductors for electric power transmission.
Three-phase electric power systems are used for high and extra-high voltage AC transmission lines (50 kV and above). The towers must be designed to carry three (or multiples of three) conductors. The towers are usually steel lattices or trusses (wooden structures are used in Germany and Scandinavia in some cases) and the insulators are either glass or porcelain discs or composite Insulators using Silicone Rubber or EPDM rubber material assembled in strings or long rod whose length is dependent on the line voltage and environmental conditions. One or two earth conductors (or "ground conductors") for lightning protection are often mounted at the top of each tower.
http://en.wikipedia.org/wiki/Electricity_pylon
