The first graph presents a breakdown of energy consumption in an average Australian household, while the second graph illustrates the corresponding greenhouse gas emissions resulting from this energy use.
Overall, it is evident from the first graph that the majority of energy in a typical Australian household is used for heating and water heating, which collectively account for three-quarters of total energy usage. Conversely, the second graph shows that these activities contribute to only half of the total greenhouse gas emissions. The remaining energy consumption is attributed to appliances other than heating and water heating, which make up about one-quarter of the total energy usage and yet contribute to more than half of the total greenhouse gas emissions.
Specifically, heating and water heating represent 42% and 30% of the total energy consumption, respectively, totaling 72% of the overall energy usage. In terms of greenhouse gas emissions, these activities contribute 15% and 32%, amounting to 47% of the total emissions.
In contrast, appliances such as refrigeration, other household appliances, lighting, and cooling account for 7%, 15%, 4%, and 2% of the total energy consumption, adding up to 28% collectively. However, their greenhouse gas emissions represent 14%, 28%, 8%, and 3% respectively, totaling slightly more than half of the total gas emissions, precisely 53%. This indicates a higher emission intensity compared to their energy usage.