澳大利亚研究人员通过模型分析发现，家庭电气化的实施顺序对成本节省有重大影响1。研究建议采用特定的升级路径：首先提高能源效率，其次安装太阳能，再次淘汰燃气设备，最后才考虑安装家庭电池1。以墨尔本西郊一个三居室住宅为例，按照这一顺序进行改造，年能源成本可从基准的6,226澳元大幅降至约600澳元1。
研究分析了三条完整电动化路径的成本与收益1。无电池方案投资约32,600澳元，年省4,400澳元，投资回本周期为5.4年；中等规模电池方案成本约48,100澳元，年省5,300澳元，回本周期6.8年；大型电池方案成本约56,400澳元，年省5,900澳元，回本周期7.4年1。在联邦和州政府补贴后，三条路径的总成本分别降至约23,900澳元、35,800澳元和41,800澳元1。研究还显示，墨尔本安装11.76千瓦太阳能阵列的年产电量可达约15,400千瓦时1。
Australian researchers from Deakin University have conducted a comprehensive analysis of household electrification pathways, revealing an optimal sequence for upgrades that maximizes cost savings.1 The study modeled three distinct routes to full home electrification, using a benchmark three-bedroom house in Melbourne's western suburbs as the basis for comparison.1 The baseline scenario showed annual energy consumption of 5,300 kilowatt-hours of electricity, nearly 50 gigajoules of gas, and 1,230 liters of petrol, totaling 6,226 Australian dollars in annual energy costs.1
The researchers recommend a specific implementation order: first improving energy efficiency, then installing solar panels, subsequently eliminating gas appliances, and finally considering home battery installation.1 This sequence differs from common consumer practices, which often prioritize battery systems earlier in the upgrade timeline. The three electrification pathways analyzed show varying costs and payback periods. The fully electric pathway without battery storage costs approximately 32,600 Australian dollars, generates annual savings of 4,400 dollars, and achieves payback in 5.4 years.1 A medium battery option requires an investment of around 48,100 dollars, delivers 5,300 dollars in yearly savings, and returns capital in 6.8 years.1 The largest battery system costs approximately 56,400 dollars, saves 5,900 dollars annually, and requires 7.4 years for full cost recovery.1
Federal and state government subsidies significantly reduce these upfront expenses, bringing total costs down to approximately 23,900, 35,800, and 41,800 Australian dollars respectively across the three pathways.1 When fully electrified and equipped with appropriate solar capacity, the Melbourne home could reduce its annual energy costs to roughly 600 dollars.1 For the region, an 11.76-kilowatt solar array generates approximately 15,400 kilowatt-hours of electricity annually.1
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