Green building studies generally focus on singular performance aspects (e.g., energy, waste, water, indoor environment) with few tackling the relationships between each other, particularly the relationship between indoor environmental quality (IEQ) and building energy consumption. This study aims to explore the relationship between IEQ performance and energy consumption in National Australian Built Environment Rating System (NABERS) certified buildings. A verified climate normalization factor was localized to standardize energy use intensity in buildings from different climate zones of Australia. The normalized energy use intensity (NEUI) was calculated for all office buildings and correlated with their NABERS Energy and IE rating scores. Multivariate linear regression results reveal that one unit increase in NABERS Energy rating score and IE score can reduce NEUI by 21.98 kWh/m² and 9.88 kWh/m² per annum, respectively. Also, this study develops an Energy and Indoor Environment Index to benchmark the energy and IEQ performance of Australian office building. Buildings with excellent NABERS Energy and IE ratings (scores equal to/higher than 5) have been classified as high-performance NABERS buildings (HNBs) and the rest as low-performance NABERS buildings (LNBs). A comparison between 49 HNBs and 48 LNBs demonstrates that, on average, HNBs can deliver 12.6% better indoor environment quality with 35.9% less energy consumption than LNBs. In contrast, many LNBs either use excessive energy to provide a sufficient IEQ, or sacrifice IEQ to reduce energy costs and/or achieve a high NABERS Energy rating.

绿色建筑研究通常侧重于单一的性能方面（例如，能源、废物、水、室内环境），很少处理彼此之间的关系，尤其是室内环境质量 (IEQ) 与建筑能耗之间的关系。本研究旨在探讨澳大利亚国家建筑环境评级系统 (NABERS) 认证建筑的 IEQ 性能与能耗之间的关系。一个经过验证的气候标准化因子被本地化，以标准化来自澳大利亚不同气候区的建筑物的能源使用强度。计算所有办公楼的归一化能源使用强度 (NEUI)，并与它们的 NABERS 能源和 IE 评级分数相关联。^{分别为 2}和 9.88 kWh/m ²每年。此外，本研究还制定了能源和室内环境指数，以衡量澳大利亚办公楼的能源和 IEQ 表现。具有优秀 NABERS 能源和 IE 评级（分数等于/高于 5）的建筑被归类为高性能 NABERS 建筑 (HNB)，其余为低性能 NABERS 建筑 (LNB)。49 台 HNB 和 48 台 LNB 之间的比较表明，平均而言，HNB 可以提供比 LNB 低 35.9% 的能耗和 12.6% 的室内环境质量。相比之下，许多 LNB 要么使用过多的能源来提供足够的 IEQ，要么牺牲 IEQ 来降低能源成本和/或实现高 NABERS 能源评级。