Australia's largest upstream oil and gas players have put carbon capture and storage (CCS) and hydrogen centre stage in their efforts to reach net zero carbon emissions by 2050.

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The country already is home to one of the world’s largest CCS projects at Chevron’s Gorgon liquefied natural gas scheme, but that development's troubled startreportedly has led to more than 7 million tonnes of additional carbon dioxide being vented into the atmosphere.