TransGrid’s network is made up of:
- Around 12,500 kilometres of high voltage overhead transmission line and underground cable operating at voltages of up to 500kV;
- 85 substations and switching stations;
- 65 connection points to generators;
- 354 distributor and direct customer connection points; and
- 6 interconnectors to Victoria and Queensland’s transmission network.
While 60 percent of NSW energy is generated west of the Great Dividing Range it must be delivered to the east coast, where most of the state's load is located. The Sydney, Wollongong and Newcastle areas consume 75 percent of the energy.