this post was submitted on 01 Aug 2023
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South Australia is 70% renewables, as per their own official energy site.
Batteries are the limiting factor for renewables. Building battery storage that can supply a large city is expensive. Even the battery South Australia had Elon Musk build can only supply a town for about an hour. I'm hoping battery tech improves soon, but it seems to have stagnated for a while.
Ah sorry, my mistake. I messed up there.
The battery in SA is really just for grid stabilisation, not long term storage. Batteries are not really a good soln for longer duration storage. You need surprisingly little storage though when they've modelled fully renewable grids which is why the projected costs aren't stupidly expensive.