The particular grid economics of Southern Australia are not reproduced everywhere else. It is all about the dynamics and regulations of the spot market, existin

The particular grid economics of Southern Australia are not reproduced everywhere else. It is all about the dynamics and regulations of the spot market, existing short term generating capacity, and the capabilities of the other market participants. The batteries didn't "save" $40 million of electricity, they enabled one entity (Southern Australia's power operator) to trade more efficiently against the other participants, who were the losers in this battery deployment in the form of reduced profits.