Technology Type

Power lines are conductors used to transmit and distribute electrical energy. They are typically made of aluminum or sometimes copper and can be either overhead or underground. Overhead power lines are supported by towers or poles and are designed to carry large quantities of power over long distances at relatively high voltages. These lines can be classified into different categories based on the voltage they carry:

• Low Voltage (LV): Less than 1000 Volts, used for connections between residential or small commercial customers and the utility.
• Medium Voltage (MV; Distribution): Between 1000 Volts (1 kV) and 69 kV, used for distribution in urban and rural areas.
• High Voltage (HV; Subtransmission): Between 115 kV and 138 kV, used for sub-transmission and transmission of bulk quantities of electric power and connection to very large consumers.
• Extra High Voltage (EHV; Transmission): From 345 kV up to about 800 kV, used for long-distance, very high power transmission.
• Ultra High Voltage (UHV): Higher than 800 kV, which enables the transmission of five times more power over six times the distance compared to conventional lines.