Australia is one of the top adopters of PV solar in the world. Granted, we are not yet at the level of Germany (500MW per million head), but we're doing ok at 250 MW per million head of population. Half the number of Germany might sound pretty poor, but it is twice that of the USA (125), Spain (118) and a a lot more than the UK (178).
Last year saw overall production increase by 13% and there are a lot of big projects in the pipeline.
Funny you call it "the outback". Their final proposed site was 20km from my then family home :)
I was disappointed it never went anywhere, and yes, Australians should be adopting solar much, much faster than they are.