The provided pie charts illustrate the breakdown of energy consumption and the resulting greenhouse gas emissions across various categories within an average Australian household. Overall, heating accounts for the largest share of household energy use, but water heating and other appliances become the primary contributors to greenhouse gas emissions, indicating a disproportionate environmental impact from certain energy uses. In terms of energy consumption, heating was by far the predominant category, constituting 42% of the total. Water heating followed, accounting for a significant 30%. Other appliances made up 15% of energy usage, while refrigeration consumed 7%. The lowest energy users were lighting and cooling, responsible for 4% and 2% respectively. A different pattern emerges when examining greenhouse gas emissions. Water heating became the highest emitter, contributing 32%, a slight increase from its energy share. Notably, emissions from other appliances almost doubled to 28%, making it the second-largest source. In stark contrast, heating, despite being the largest energy consumer, generated only 15% of the total emissions. Similarly, refrigeration and lighting also saw proportional increases, accounting for 14% and 8% of emissions, compared to their much smaller energy use figures. Cooling remained the least impactful category, contributing 3% to greenhouse gases.
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