The two pie charts show how Australian homes use energy and the amount of greenhouse gas emissions that come from this use.
Overall, the data shows that heating uses the most energy. However, water heating is the main source of greenhouse gases.
In terms of energy use, heating is clearly the most important part, accounting for 42%. Water heating is the next biggest category at 30%. The remaining four categories-refrigeration (7%), other appliances (15%), lighting (4%), and cooling (2%)-all use smaller amounts of energy.
The emissions chart shows a different result. Water heating creates the highest proportion of gas, at 32%. Importantly, the other appliances category is a significant polluter, contributing 28% of the gas, which is high compared to its 15% energy use. In contrast, even though heating uses 42% of the energy, it is only responsible for 15% of the emissions. The smallest shares are from refrigeration (14%), lighting (8%), and cooling (3%).
To sum up, although heating is the biggest thing for energy use, water heating is the largest problem for greenhouse gas. This shows that the energy system in Australian houses is not very efficient.