One idea is to build a battery charging solar plant in the australian outback and use it to charge lithium ion batteries

Another idea is to build a water desalination plant to desalinate water for either drinking water or for agriculture

Another idea is to use the sodium harvested from the desalinization plant and use it to make sodium solid state batteries in a battery factory

automation of the transport of the batteries and water is also possible

This could allow for a feedback loop where the product of the agricultural stuffs could be used to offset the cost of building more solar panels, desalinisation plants and battery production

The farming could make high value products that require a lot of water production like cotton

The reduction of cost of the farming materials from the exponential increase of this feedback loop could be used to reduce the use of non biodregadable plastics or provide other civic goods to society