ACCIONA, in a joint venture with Genus, is delivering the design and construction of 225km of dual circuit 500kV overhead transmission lines and upgrade the Bannaby 500kV substation.
With a total investment of AU$1.4 billion (€850 millions), the project is one of the largest energy infrastructure initiatives in Australia and will involve the design and construction of 225 kilometers of 500 kV overhead transmission lines from Bannaby to Wondalga, and the upgrading of the 500 kV Bannaby substation.
It is a project of national significance and will contribute to Australia meeting its future energy demands through a greater mix of low emission renewable energy sources as we transition to a low carbon future.
HumeLink will deliver a cheaper, more reliable, and more sustainable grid by increasing the capacity for renewable energy to be delivered across the national electricity market, unlocking the full capacity of the Snowy 2.0 hydroelectricity scheme and other new renewable energy generators.
Once completed, the full HumeLink project will provide an additional 2,200 megawatts of on-demand energy into the grid – enough to power up to three million homes for a week.
HIGHLIGHTS
- 225km transmission line route
- 459 transmission towers
- 6,000km of conductor cable
- 33,185 tonnes of steel
- 1,836 piles
Main construction began in September 2025 with the first transmission towers erected in January 2026. Work will continue throughout 2026 on completing access tracks and tower pads as well as erecting towers and stringing new conductor cables between completed towers.
GENERAL INFORMATION
- Location: from Bannaby to Wondalga.
- Contract type: Design and construction.
- Infrastructure: Dual Circuit 500kV Overhead Transmission Lines and the upgrade of the Bannaby 500kV substation.
- Construction completion year: Q4 2027