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TransGrid

Transgrid builds and maintains the largest electricity network in Australia, providing the backbone of the National Electricity Market.

Last updated September 10, 2026

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Overview

Transgrid operates and manages the high voltage electricity transmission network in NSW and the ACT, connecting generators, distributors, and major end users. Its history in the energy sector began with the establishment of the Electricity Commission of NSW in the 1950s, leading to the inception of Transgrid in 1995. In 2015, Transgrid became a private company when the NSW Government granted NSW Electricity Networks a 99-year lease over the NSW transmission network. The commercial arm of the business, Transgrid Services Group (TSG), was established in 2018 and rebranded as Lumea in 2021.

History

Transgrid's history in the energy sector began with the establishment of the Electricity Commission of NSW in the 1950s, leading to the inception of Transgrid in 1995. In 2015, Transgrid became a private company when the NSW Government granted NSW Electricity Networks a 99-year lease over the NSW transmission network. The commercial arm of the business, Transgrid Services Group (TSG), was established in 2018 to deliver non-regulated infrastructure and telecommunications services. In 2021, TSG was rebranded as Lumea.

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