TransGrid owns, operates, and manages high voltage electricity transmission network that connects generators, distributors, and end users in New South Wales (NSW) and the Australian Capital Territory (ACT). Its network consists of approximately 12,900 kilometers of high voltage overhead transmission line, 78 kilometers of underground cable operating at voltages of up to 330 kV, 100 substations, and 37,241 transmission structures, 6 interconnectors to Victoria and Queensland’s electricity transmission networks, 3 million households and businesses connected to electricity across NSW and the ACT.