Due to the large amount of power involved, and the properties of Electricity, transmission normally takes place at high voltage (132-kilovolt or above) to reduce losses that occur over long distances.Įlectricity is usually transmitted to a substation near a populated area. Electricity transmission is the process by which large amounts of Electricity produced at power plants (such as hydro, geothermal, thermal and wind), is transported over long distances for eventual use by consumers.