National Greenhouse Gas Inventory for September 2018

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Quarterly Update

Australia’s National Greenhouse Accounts are made up of a series of comprehensive reports and databases that estimate, and account for, Australia’s greenhouse gas emissions. These publications fulfil Australia’s international and domestic inventory reporting requirements. The Quarterly Update of Australia’s National Greenhouse Gas Inventory reports on the latest estimates of Australia’s national greenhouse gas inventory.

This Quarterly Update provides:

  • estimates of Australia's national inventory of greenhouse gas emissions up to the September quarter of 2018
  • and emissions from the National Electricity Market (NEM) up to the December quarter 2018.

Key data

National emission levels for the September quarter 2018 decreased by 1.4 per cent relative to the previous quarter on a seasonally adjusted and weather normalised basis, driven by the lowest quarterly emissions output from the electricity sector in over a decade. Reduced emissions from diesel consumption across transport, agriculture and mining also contributed to this decrease. In trend terms, the emissions remained flat at 0.0 per cent.

Emissions for the year to September 2018 are estimated to be 536 Mt CO2-e, up 0.9 per cent (4.6 Mt CO2-e) on the previous year, primarily due to increased LNG exports (19.7 per cent).

Australia's emissions for the year to September 2018 were 15.1 per cent below the peak recorded in 2007 and 2.6 per cent below emissions in 2000 and 11.5 per cent below emissions in 2005.

Emissions per capita, and the emissions intensity of the economy, were at their lowest levels in 29 years. Emissions per capita in the year to September 2018 have fallen 35.8 per cent since 1990, while the emissions intensity of the economy has fallen 59.8 per cent since 1990 (Figure P1).

Emissions from the NEM for the year to December 2018 decreased 3.5 per cent on the previous year, and decreased by 0.4 per cent on a seasonally adjusted basis from the previous quarter.

See text above and below for a description of data in figure 1
Figure 1: Emissions per capita and emissions per dollar of real GDP, Australia, year to September 1990 to 2018. Source: Department of the Environment and Energy

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