Queensland-NSW Interconnector upgrade completed

Brett Redman and Matt Keane at the Queensland-New South Wales Interconnector ceremony
Brett Redman and Matt Keane

More energy will now be able to flow between Queensland and NSW with the successful completion of Transgrid’s upgrade to the Queensland-NSW Interconnector.

The $236 million Queensland-NSW Interconnector upgrade has increased the flow of electricity between the states and reduced constraints on the NSW transmission network.

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The project is part of the Australian Energy Market Operator’s Integrated Systems Plan (ISP) and allows 460MW more power to be transferred into Queensland and 190MW more into NSW and the ACT when needed.

Transgrid CEO Brett Redman said, “Queensland-NSW Interconnector is the first ISP project we have delivered and it is a critical piece of infrastructure to support Australia’s energy transition. The interconnector upgrade has come in on time and on budget and will now make a significant difference to the National Electricity Market.

“Transgrid is leaning into the acceleration of the energy transition by building the major projects which will enable the integration of renewables, increase competition among generators, drive down electricity prices and support the decarbonisation of Australia’s economy.

“I’d like to thank the NSW and Commonwealth Governments for their support in delivering this crucial project, which will form part of the backbone of the future energy system,” Redman said.

The Commonwealth and NSW Governments supported the early delivery of Queensland-NSW Interconnector through a $102 million joint-underwriting of the project.

Treasurer and Minister for Energy The Hon. Matt Kean MP welcomed the completion of the project.

“We identified the Queensland-NSW Interconnector project as a priority in the NSW Transmission Infrastructure Strategy because it supports our vision to provide affordable and reliable energy for NSW households,” Kean said.

“Queensland-NSW Interconnector will support the development of Renewable Energy Zones which will be vital to ensuring the future of electricity in NSW as coal fired power stations retire.

“NSW is leading Australia’s action on climate change and this project is an important step in shifting to cleaner, greener energy and helping us to secure our economic prosperity for decades to come.”

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The Queensland-NSW Interconnector upgrade involved a range of works including:

  • Upgrading 300km of transmission lines
  • Replacing 58 towers between Tamworth, Muswellbrook and Liddell power station
  • Upgrading substations at Armidale, Dumaresq, Muswellbrook and Tamworth

As part of construction new taller pole structures were put in place to enable the transmission of more energy as new generation comes online.