Boom Logistics helps propel major NSW transmission project

Boom Logistics has supported construction of Transgrid's HumeLink West transmission project in New South Wales, with work progressing on tower installation near Adjungbilly.

Where this fits

HumeLink is a case study in the hidden cost of a renewables-heavy grid. The 220 kilometre transmission line exists because wind and solar output is geographically dispersed and weather-dependent. It connects renewable generation in the Snowy Mountains region to load centres in Sydney and Canberra. This is not a one-off: Australia's transition pathway requires massive overbuild of transmission infrastructure to route variable output from where the wind blows and sun shines to where people live and work. That infrastructure is capital-intensive, land-hungry, and slow to permit and build. It is also a cost that is rarely bundled into the headline price of renewable energy.

What it means

The project illustrates why whole-system costs for a renewables-dominant grid are substantially higher than kilowatt-hour comparisons suggest. Transmission, storage, firming capacity and system balancing are not optional extras. They are compulsory additions to any grid built on weather-dependent supply. By contrast, firm dispatchable generation, whether gas, coal or nuclear, requires far less transmission overbuild because output is available when needed. Australia is choosing to pay for both the renewables and the transmission backbone to make them work. A firm energy source would obviate much of that spending. This is the cost structure that energy policy debates routinely omit.