The Government will also restore the role of Australiaâs Climate Change Authority as an independent source of advice. 2.1.3 How the NDC is a progression and reflects highest possible ambition Australiaâs updated NDC is a progression on our previous 2030 target and a significant increase in ambition, committing Australia to reduce greenhouse gas emissions by 43% below 2005 levels by 2030 â half as much again as the previous target of 26 â 28% â and achieve net zero emissions by 2050. 2.1.4 Economy-wide absolute emissions reduction targets Australiaâs 2030 and 2050 targets are economy-wide absolute emissions reduction targets. 2.1.5 Special circumstances of LDCs and SIDS Not applicable.