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National Greenhouse Accounts Factors - August 2015

Department of the Environment, 2015

Update

This publication incorporates the updated Global Warming Potentials (GWPs) adopted by the Parties to the UN Framework Convention on Climate Change and its Kyoto Protocol, and reflecting GWP values contained in the Fourth Assessment Report of the Intergovernmental Panel on Climate Change (IPCC).

The updates to the GWPs resulted in changes to emission factors across all sectors.

About the document

The National Greenhouse Accounts (NGA) Factors has been prepared by the Department of the Environment and is designed for use by companies and individuals to estimate greenhouse gas emissions. The NGA Factors is not published for the purposes of reporting under the National Greenhouse and Energy Reporting Act 2007 (the NGER Act). While drawing on the National Greenhouse and Energy Reporting (Measurement) Determination 2008, the methods described in the NGA Factors have a general application to the estimation of a broader range of greenhouse emissions inventories.

Unless otherwise stated, the methods for calculating emissions listed in this document are "Method 1" from the National Greenhouse and Energy Reporting (Measurement) Determination 2008 incorporating the National Greenhouse and Energy Reporting (Measurement) Amendment Determination 2015 (No. 1) and (No. 2), and the National Greenhouse and Energy Reporting (Measurement) Technical Guidelines July 2014. The Technical Guidelines are available and have been designed to support reporting under the NGER Act 2007.

The default emission factors listed have been estimated by the Department of the Environment using the Australian Greenhouse Emissions Information System (AGEIS) and are determined simultaneously with the production of Australia's National Greenhouse Accounts. This ensures that consistency is maintained between inventories at company or facility level and the emission estimates presented in the National Greenhouse Accounts. The emission factors are referred to in this document as National Greenhouse Accounts default emission factors.

More information on the estimation methods employed in the National Greenhouse Accounts is available in the National Inventory Report 2013. The methods used at the national level, and reflected in the factors reported here, are consistent with international guidelines and are subject to international expert review each year.

The factors and methods in this document correspond to those detailed in the National Greenhouse and Energy Reporting (Measurement) Determination 2008 as amended by the National Greenhouse and Energy Reporting (Measurement) Amendment Determination 2015 (No. 1) and (No. 2).

As the updates to the GWPs resulted in changes to emission factors across all sectors, the previous National Greenhouse Accounts Factors - December 2014 publication remains available for comparative purposes.

Further resources