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PredecessorElectricity Commission of New South Wales
Founded1 February 1995 (1995-02-01)
Area served
New South Wales
ServicesElectric power transmission
OwnerNSW Electricity Networks

TransGrid is the manager and operator of the high voltage electricity transmission network in New South Wales and the Australian Capital Territory, Australia, and is part of the National Electricity Market (NEM). TransGrid began as the trading name of the Electricity Transmission Authority which was established on 1 February 1995 as a statutory authority under the Electricity Transmission Authority Act 1994, as part of the break-up of the Electricity Commission of New South Wales.[1] The Authority was corporatised in December 1998, by the Energy Services Corporations Amendment (TransGrid Corporatisation) Act 1998, and TransGrid became the actual name of the corporation.[2]

In December 2015, a consortium called NSW Electricity Networks was the successful bidder for a 99-year lease of TransGrid's transmission network[3] for $10.3 billion.[4] The consortium consists of: two Australian entities Spark Infrastructure (15%), the Hastings-managed Utilities Trust of Australia (20%), the Canadian pension fund Caisse de depot et placement du Quebec (25%), and two Middle Eastern sovereign wealth funds, the Abu Dhabi Investment Authority (20%) and the Kuwait Investment Authority (20%).[4] State Grid Corporation of China was one of the other bidders, in a consortium with Macquarie Infrastructure Real Assets. The company's bid was cleared by the Foreign Investment Review Board but was eventually unsuccessful,[5] possibly because of its government and military connections.[4]


TransGrid operates the major high voltage electricity transmission network in NSW and the ACT, and is part of the National Electricity Market (NEM). The network connects generators, distributors and major end users. TransGrid's network comprises 104 bulk supply substations and more than 13,133 kilometres of high voltage transmission lines and cables. The network operates primarily at voltage levels of 500 kV, 330 kV, 220 kV and 132 kV.

TransGrid's network also connects to 20 direct connect customers, including the four distribution businesses: Endeavour Energy, Ausgrid, ActewAGL, and Essential Energy.

TransGrid participates in the Australian Energy Regulator's (AER) revenue proposal process, where submissions of the transmission network service providers (TNSP), the AER and other interested parties are used to set the maximum allowable revenue (MAR) for the TNSPs for a five-year period.

TransGrid Telecommunications[edit]

With more than 15 years’ experience TransGrid Telecommunications manages an extensive fibre optic network covering in excess of 4000 km across NSW, the ACT and Victoria.

TransGrid's Telecommunications network is one of the largest optical fibre network in Australia, with the majority of the network's Optical Ground Wire (OPGW) strung above the electricity transmission network.[6]


  1. ^ "TransGrid". NSW Treasury. Archived from the original on 5 September 2007. Retrieved 23 September 2007.
  2. ^ "Publication Guide Dec 20, 2010" (PDF). TransGrid. Retrieved 12 March 2012.
  3. ^ "Welcoming our new owners". Retrieved 2016-01-12.
  4. ^ a b c $10.3 billion NSW power sale a good deal for the Baird government
  5. ^ The State Grid Corporation of China: Its Australian engagement and military links
  6. ^ "TransGrid Telecommunications". Retrieved 2016-01-12.

External links[edit]