Australian Household Energy Use The two charts demostrate the household energy use and the household greenhouse gas emission respectively. In the former one, it is shown that heating oppupies almost half of the energy use, with 42%, which is the largest figure among this chart. Water heating（30%）takes the second place, which is followed by other appliances（28%）, refrigeration（7%）, lighting（4%）, and cooling（2%）. In the latter one, however, intersting statistics are shown that the household that generates the biggest green house gas emissions turns out to be the water heating（32%）, which is almost the same as its energy use, rather than heating, which accounts for only 15% of the GGE, only one-third of its EU. The second biggest producer of GGE is other appliances with 28%, which nearly dobles its EU. This resembles refrigeration and the lighting , taking up14% and 8% of the GGE, compared to their 7% and 4% of EU respectively. Cooling remains almost the same as its EU. In summary, in comparison with their EU, the percentage of GGE of water heating and cooling remain almost the same, while other appliances , refrigeration and lighting double. Only the heating drop to one-third of its EU. To sum up, the EU is not necessarily connected with the GGE and we should save the energy and reduce the GGE.