As reported at Renew economy world-first-south-australia-achieves-100pct-solar-and-lowest-prices-in-australia.
Alas the headline is somewhat misleading. The 100% reliance on renewables was only an hour but the lowest wholesale prices were for the quarter.
So let us dig a little deeper into SA's future.
South Australia has the lowest prices and the most secure electricity grid in Australia. It is a net energy exporter to the other states and it appears will always be so.
This is why so many batteries are being built there. A battery is useless unless the renewables in question produce more electricity than they allowed to market.
South Australia can only ne a net energy exporter if they produce most of the energy locally at peak demand times. the idea they are a net exporter because wand generates more electricity than is needed at night time (a period of low demand) is laughable and is only put forward by innumerates.