As a part of this process, the Government will consider a potential long term emissions reduction goal for Australia, beyond 2030, taking into account international trends and technology developments.Attachment: Australiaâs intended nationally determined contribution Target: 26 to 28 per cent below 2005 levels by 2030 Reference point Base year 2005 Time frames Period covered 2021 â 2030 Scope and Coverage Target type Absolute economy-wide emissions reduction by 2030, to be developed into an emissions budget covering the period 2021-2030 Gases covered Carbon dioxide (CO2 ); Methane (CH4 ); Nitrous oxide (N2 O); Hydrofluorocarbons (HFCs); Perfluorocarbons (PFCs); Sulphur ); Nitrogen trifluoride (NF3 ) Sectors covered Energy; Industrial processes and product use; Agriculture; Land-use, land-use change and forestry; Waste % of base year emissions covered 100 per cent of greenhouse gas emissions and removals in Australiaâs national greenhouse gas inventory Assumptions and methodological approaches for emissions estimates and accounting Metrics Australia intends to apply 100 year Global Warming Potentials (GWPs) as contained in inventory reporting guidelines, currently IPCC Fourth Assessment Report 100 year GWPs, or as otherwise agreed. Emissions estimation methodology Australia intends to apply the IPCC 2006 Guidelines and IPCC 2013 Revised Supplementary Methods, or as otherwise agreed.