In residential buildings, accurate forecast of time-varying electricity demands is important for the estimation and prediction of electricity consumption. Information of the end user's electricity consumption patterns is necessary as it has a significant impact on the load curve in the utility grid. Thus, this study aims to provide detailed information on the electricity use and indoor thermal environment for typical residential buildings. Field measurements were conducted in 19 selected dwellings in Kuala Lumpur, Malaysia to specifically measure the total and the air conditioner (AC) electricity usage along with the indoor thermal environment. There were significant differences in the total electricity consumption among low-, middle-, and high-income dwellings. However, for the AC electricity consumption, the different income groups do not display notable differences. This might be due to the occupant behaviour of using the air conditioner mostly during sleeping hours. The measurement results of all targeted dwellings showed that the daily averages of the total and the AC electricity consumption are 14.5 kWh/day and 3.9 kWh/day, respectively. The daily averages of the AC electricity usage in the living room and the bedroom are 2.7 kWh and 4.4 kWh, respectively. The fraction of the daily peak demand from all targeted dwellings shows that the peak at the nighttime is due to the use of the air conditioner. Moreover, the patterns of hourly indoor thermal environment showed an average of 30.1 °C (living room) and 29.3 °C (bedroom). Generally, the comfort level for the indoor temperature lies between 23 °C and 26 °C, while for relative humidity, the comfortable range is between 40% and 70%. These findings provide preliminary understanding of the detailed characteristics of residential electricity use and indoor environment in Malaysian dwellings and can be used to predict the electricity demand in the future.

在住宅建筑中，准确预测随时间变化的电力需求对于估算和预测用电量非常重要。最终用户的用电模式信息是必要的，因为它对公用电网中的负荷曲线有重大影响。因此，本研究旨在提供有关典型住宅建筑的用电量和室内热环境的详细信息。在马来西亚吉隆坡的19个选定住宅中进行了现场测量，以专门测量总和空调用电以及室内热环境。在低收入，中等收入和高收入住宅中，总用电量存在显着差异。但是，对于交流电消耗，不同的收入群体之间没有显着差异。这可能是由于大多数人在睡眠时间使用空调的行为。所有目标住宅的测量结果显示，总每日平均电量和交流电消耗分别为14.5 kWh /天和3.9 kWh /天。客厅和卧室的交流电平均每日使用量分别为2.7 kWh和4.4 kWh。来自所有目标住宅的每日高峰需求的一小部分表明，夜间的高峰是由于使用了空调。此外，每小时室内热环境的模式显示平均为30.1°C（客厅）和29.3°C（卧室）。通常，室内温度的舒适度在23°C至26°C之间，而相对湿度则为 舒适范围在40％至70％之间。这些发现提供了对马来西亚居民住宅用电和室内环境的详细特征的初步了解，并可用于预测未来的用电需求。