The provided pie charts illustrate the distribution of energy consumption in an average Australian household for various purposes, alongside the corresponding greenhouse gas emissions resulting from this energy utilization.
Overall, it is evident that heating accounts for the largest proportion of energy usage, in contrast to the lowest percentage of greenhouse gas emissions. Meanwhile, water heating, as the second highest energy consumer, is the biggest contributor to greenhouse gas emissions.
In terms of energy consumption, heating accounts for 42% of the energy consumed by an Australian household, making it the most substantial figure in the chart. Water heating follows at 30%. In contrast, other appliances consume only 15% of the total energy, while refrigeration, lighting, and cooling make up 7%, 4%, and 2% respectively.
Further analysis reveals that in terms of greenhouse gas emissions, water heating constitutes 32% of the total emissions. Other appliances are responsible for 28% of the total. By comparison, the percentages for heating, refrigeration, and lighting are 15%, 14%, and 8% respectively. Cooling, on the other hand, contributes just 3% to the overall greenhouse gas emissions.