Could you imagine a more suitable place than WA for solar thermal, with mega molten salt heat storage batteries?
Solar PV with battery storage. Wind turbines each with their own batteries to smooth and extend supply. Those batteries could also absorb surplus energy from the grid in times of plenty as a virtual power station.
Wave energy pumping generators on land.
Home storage batteries being charged by PV panels and also storing excess power grid power to be drawn down as another virtual power station to the benefit of the households.
