Qld and NSW get their power from black coal which is tied to the international price.
" Rising gas and coal prices globally have contributed to a spike in wholesale power prices to record levels. Repairs or outages to as much as a third of the coal-fired power fleet have also contributed to the recent jump. "
And then there's the unreliability of an aging fleet. You'd think after half a century of operation they'd be more reliable, wouldn't you ?
Funny how you left out this bit when talking about Qld.
"The March quarter jump in wholesale prices may have a way to run. Aemo said outlooks were influenced by the closure timing of plants in NSW and the delayed return of major units on outage including Callide C4 and Swanbank E in Queensland. "
" By contrast, Queensland 2023 prices are at $108/MWh, South Australia’s $78/MWh, while Victoria’s were the lowest among the mainland states at $61/MWh. "
Isn't funny how the southern states are cheaper ? As far as I know, solar and wind aren't influenced by cartels, whack job dictators and greedy corporations.