An electrical transmission tower, also known as an electricity pylon or power tower, is a tall structure used to support electrical power lines. These towers are typically made of steel or concrete and are designed to withstand the weight of the power lines and the forces exerted on them by the wind.Electrical transmission towers are used to transmit high-voltage electricity over long distances from power plants to substations or from one substation to another. The power lines are usually made of aluminum or copper and are strung between the towers using insulators to prevent electrical current from flowing through the tower.