The first and second pie charts illustrate a comparison of how an average Australian household uses energy and the resulting gas emissions from that energy consumption.
From the first pie chart, it can be observed that heating accounts for the largest percentage of energy use at 42%. Water heating follows as the second highest category, utilizing 30% of energy. Other household appliances collectively use 15% of energy, while refrigerators, lighting, and cooling account for 7%, 4%, and 2%, respectively.
In terms of greenhouse gas emissions, other appliances produce 28% of the total emissions. Water heating contributes slightly more, at 32%, which is 2% above its energy usage proportion. Heating and refrigeration are responsible for 15% and 14% of emissions, respectively, while lighting and cooling account for 8% and 3%.
Overall, the usage and emissions are mostly similar, but there is a significant difference in heating. Households consume 42% of their energy for heating, yet it only produces 15% of the emissions.