Germany has more than 3 times the population of Australia, and the article linked needed to be able to generate 30GW peak so likely required more installed capacity, and solar is only 1 element out of 5 required in that scenario.
Again it does seem to be feasible to get renewable only in Australia (or close to) but I dont think that tells you much about elsewhere
30GW of solar is not much. Germany built 13GW this year.
Germany has more than 3 times the population of Australia, and the article linked needed to be able to generate 30GW peak so likely required more installed capacity, and solar is only 1 element out of 5 required in that scenario.
Again it does seem to be feasible to get renewable only in Australia (or close to) but I dont think that tells you much about elsewhere