The economic assessment for South32's revised Dendrobium metallurgical coal mine expansion plan includes hugely varying estimates of greenhouse gas costs to NSW - ranging from $148,000 to $309 million.
A West Australian court has rejected arguments that the head of the environment department is obliged to consider whether to suspend or cancel or licence when a breach has occurred.
Proponents should use a range of carbon prices in cost-benefit analyses prepared for development consent applications, the NSW planning department has advised.
Western Australia's Supreme Court has rejected arguments by conservationists that the EPA should have comprehensively assessed Woodside's plans to process Scarborough field gas at its Pluto LNG plant.
The association representing upstream oil and gas companies has told the Queensland government it is opposed to the introduction of decarbonisation conditions in environmental licences.