The University of Queensland and Curtin University have completed an independent analysis of the benefits and trade-offs between overhead and underground transmission line infrastructure. The review, called ‘Comparing High Voltage Overhead and Underground Transmission Infrastructure’, seeks to establish a clear and consistent approach to evaluate overhead transmission lines and underground transmission cables. Powerlink commissioned the research.
The purpose of the report was not to identify a preferred technology, but rather outline the considerations and trade-offs associated with both overhead transmission lines and underground transmission cables. The research explored a broad range of technical, economic, environmental, social and cultural factors linked to expanding Australia’s electricity grid to support the energy transformation currently underway.
The review’s Summary Report and associated Comparison Table are available online on the University of Queensland and Curtin University websites. The below brochure provides an overview of key research findings, examining the different perspectives between overhead transmission lines and underground transmission cables.