The building sector is one of the major energy users and greenhouse gasses emitter. An energy audit is one of the effective approaches to identify efficient energy usages and energy savings. A details walk-through energy audit has been conducted to analyse the energy consumption pattern and potential energy conservation opportunities (ECOs) in Research and Development (R&D) building at Universiti Malaya from March to May 2017. Eight different appliances were categorised to analyse and the audit results were verified with the building’s utility bill which on average were between 160 MWh to 250 MWh and RM 80 k to RM 120 k per month. In this case, it was found that the air-conditioning (34%), lighting (18%) and PC/laptops (10%) are the main appliances that contributed to the total energy consumption for the building. The replacement to LEDs light in three different stages marked as Level A, Level A + B and Level A + B + C revealed to be a good solution for energy conservation which resulted in annual energy savings of 72,750 kWh, 110,381 kWh and 144,386 kWh. It concurrently contributes to annual savings of RM26554, RM40289 and RM52701 based on 9 h daily operating time with the payback period of about 1 year.

建筑部门是主要的能源使用者和温室气体排放者之一。能源审核是识别有效能源使用量和节能量的有效方法之一。2017年3月至2017年5月，对马来亚大学的研究与开发（R＆D）大楼的能耗模式和潜在节能机会（ECO）进行了详细的逐步能源审核。分类了八种不同的设备，并对这些设备进行了分析。该建筑的水电费账单核实了审计结果，该水电费账单平均每月在160 MWh至250 MWh和8万至12万令吉之间。在这种情况下，发现空调（34％），照明（18％）和PC /笔记本电脑（10％）是造成建筑物总能耗的主要设备。在三个不同阶段分别标记为A级，A + B级和A + B + C级的LED灯被证明是节能的良好解决方案，每年可节省72,750 kWh，110,381 kWh和144,386 kWh。根据每天运行9小时，每年可节省约26554令吉，40289令吉和52701令吉，投资回收期约为1年。