Future wholesale electricity prices in Queensland jumped by up to $15 per megawatt hour after CS Energy announced the return of its Callide C coal-fired power station will be further delayed by another six months to October.

With the state-owned power company still awaiting an independent report into what caused the catastrophic failure at the power station near Biloela in May 2021, concerns have been raised about the ongoing absence of 932 megawatts of capacity on the state’s energy security and electricity prices.