What We Do

Committed to delivering a safe, secure, reliable & economically efficient network.









TransGrid operates the major high voltage electricity transmission network in NSW and the ACT, connecting generators, distributors and major end users. 

Our core role is to connect electricity consumers to a safe, secure and reliable network through efficient maintenance, proficient operation of assets and prudent investment.

Our network comprises 99 bulk supply substations and more than 12,900 kilometres of high voltage transmission lines and cables. Interconnected to QLD and VIC, the network provides a strong electricity system enabling energy trading between Australia’s three largest states along the east coast and supporting a competitive wholesale electricity market.

The network operates primarily at voltage levels of 500 kilovolts (kV), 330 kV,
220 kV and 132 kV. Our substations are normally located on land owned by us with the transmission lines and underground cables generally constructed on easements acquired across private or public land. 

Staff are strategically located throughout NSW in order to meet day-to-day operation and maintenance requirements and to provide emergency response services. We have offices in Sydney, Western Sydney, Newcastle, Orange, Tamworth, Wagga Wagga and Yass.

We have a long history of connecting people to the energy they use. The network has been developed over more than 60 years to meet demand and underpins the State’s economic growth and prosperity. Our capability in planning, building, operating and maintaining the network has matured over this time, creating a sustainable business with a highly skilled workforce.