澳大利亚从7月1日起向现有住宅开放家庭能源评级系统，旨在帮助房主了解其居住房屋的能源效率水平，并为节能改造提供指导。1 该举措针对的是澳大利亚广泛存在的能源效率问题——约70%的1100万套房屋和公寓建于最低效率标准推出前，其中典型现有住宅的平均能源评级仅为2-3星，远低于新建房屋7星的最低强制标准。1
为支持居民进行节能改造，各州政府推出了相应的资金扶持计划。1 新州居民可获得2000至15000澳元的零利息贷款，用于能源评估和升级工程。1 维州则将从明年3月实施最低租赁标准，要求房东关注隔热、防风和电器升级等方面。1 成本效益最高的升级方案是安装门窗密封条，这种改造成本最低但效果显著。1 以Bruce Pearson的山地住宅为例，通过升级后，其能源评级从初始的1.2星提升至2.5星。1
Australia has introduced a Home Energy Ratings system for existing residential properties, opening to homeowners from July 1st.1 The initiative aims to help residents understand their homes' energy efficiency and direct investment toward cost-effective improvements.
The country faces a significant energy efficiency challenge, with approximately 70 percent of its 11 million homes and apartments built before stringent efficiency standards were established.1 While new construction must meet a minimum 7-star energy rating, existing dwellings average only 2 to 3 stars.1 State governments have responded with financial support, including interest-free loans ranging from 2,000 to 15,000 Australian dollars available to New South Wales residents for energy assessments and upgrades.1
One homeowner's experience illustrates the potential for improvement. Bruce Pearson's mountain residence initially received a 1.2-star rating but achieved 2.5 stars after targeted upgrades.1 Among retrofit options, installing weatherstripping around doors and windows emerged as the most cost-effective solution, offering significant efficiency gains at minimal expense.1 Victoria will introduce minimum rental standards beginning in March of the following year, requiring landlords to prioritize improvements such as insulation, weatherproofing, and appliance upgrades.1
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