Australia is HUGE and mostly empty. You need some mechanism for getting that energy from source to sink. Transmission lines are relatively few and far between.

Australia is HUGE and mostly empty. You need some mechanism for getting that energy from source to sink. Transmission lines are relatively few and far between. The eastern states have an interconnected grid. Western Australia is not only isolated, but its internal grid doesn't even reach the northern part of the state. There was a ~GW scale geothermal development in the Cooper Basin in the late '10s. The (pilot) plant was in and operating demonstrating the feasibility of (so-called) Engineered Geothermal Systems. The entire operation died on the vine because the geothermal site was 600 line-km from the nearest transmission line, and the company that developed the geothermal field was counting on the government to fund that connection. It didn't.