The coal basins of Queensland and NSW hold large coal seam gas resources. Parts of South Australia and Victoria have smaller potential resources.
Australia has an estimated 203 trillion cubic feet (TCF) of proven coal seam gas resources (enough to power a city of 1 million people for more than 4000 years) and 391 TCF of total proven gas resources (from sandstone and shale rocks). Once contingent resources are taken into account, the country has more than 800TCF of likely gas resources. More discoveries are considered likely.
In 2013, the entire Australian economy consumed only 1.1 tcf of gas, with a further 1.1 tcf exported.