Hilarious, that last graph really shouldve been in this puff piece article.
https://fred.stlouisfed.org/series/PNRGINDEXM
Energy independence in the form of renewables is now more advantageous than ever. Tethering your economy to global price hikes like this is a vulnerable position to be in.
Also renewables were supposed to decrease the exposure to such global price fluctuations, or at least act as a backstop for the marginal kWh.
Apparently the backstop is still much higher. And batteries do not generate energy.
They are based on the (Australian) national energy market (NEM) which sets price based on supply and demand across South Eastern Australia (WA and NT aren't in the NEM)