A lot of people conveniently forget that South Australia has always had Australia’s highest power prices, even before the first wind and solar farms were built. A lot of it is due to SA’s reliance on gas for power generation, and in the past, coal that had to be imported from other states.
Even with SA’s incredible renewable performance (now consistently hitting 70-80% on average over long periods of time) that still means 20-30% generated by gas, which is about the second most expensive way to generate electricity other than nuclear.
There also may be other contributory market issues that I’m not aware of. But renewables are not to blame.
One very interesting factoid that I have dug up is that over the past 10 years, as SA’s renewable generation has skyrocketed, SA has on average actually become
less and less reliant on power imports from VIC, and increasingly exporting more!
”How good is that”