@jws Out here, most large towns have reticulated natural gas (sizeable reserves to the southeast in Bass Strait) while smaller places & rural areas use LPG (Liquefied Petroleum Gas) which is propane, butane or a mix of the two. Some properties have a large storage cylinder (sometimes underground) which feeds the building, others have a pair of 45 kg bottles. These are refilled from a tanker or exchanged for filled units. See http://www.elgas.com.au/for-home/refill-gas-bottles-lpg-supply-bottled-gas //