Even outside of western China there are India, myanmar, vietnam, cambodia, nepal and mongolia which all have substantial renewable resources. It's not clear that the cost of export is lower than the cost of local production and overland transmission.

Indonesia and PNG are good candidates though.

I think one thing about this, if Australia decides to invest heavily into making itself a power superpower.

We'll most likely to see a huge revolution when it comes to infrastructure and habitability of the continent overall. Possibly more than likely to push the country into a actual superpower status.

Considering the fact that the whole country is just mostly wilderness, with fair amount of country-sized farms across the land. But since everything is so far apart, we'll likely to see some new development of existing settlements situated in hot arid outback, turning into bigger towns or cities to supply the demand that the solar farms require for their maintenance. And we could easily grow things in the outback with enclosed farming, allowing for plants to be grown in climate controlled rooms in often considered impossible, outback with the advent of limitless clean energy.

It'd probably make sense too considering the fact that Middle East is already crumbling, due to the dominant alt-right movements destroying the countries inside out despite the facade that they put up.