National Greenhouse Accounts Factors - December 2014
The National Greenhouse Accounts has been updated to include specific scope 2 emission factors for the North-West Interconnected System (NWIS) and the Darwin-Katherine Interconnected System (DKIS). The scope 2 emission factors for other States and Territories have not changed. Scope 2 emissions factors for electricity grids to be used for calculating a carbon dioxide equivalent net abatement amount in accordance with a methodology determination under the Carbon Credits (Carbon Farming Initiative) Act 2011 are also included in this update.
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 2014 (No. 1) 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 2012. 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 emission factors reported in the December 2014 update are the same as those listed in the NGA Factors July 2014. 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 2014 (No. 1).