Research on changes in power consumption by residential attributes using data from Home Energy Manegement System linked with ECHONET Lite

In order to achieve Japan's CO2 emission reduction targets in the residential sector, we believe it is important to accurately understand the actual status of energy use in the home. The aim of this study is to focus on the changes in the power consumption of household appliances in the house since before Coronavirus disease 2019 (COVID-19), and to analyze them subdivided by household structure and building location to determine if there are any differences. Therefore, home energy management system (HEMS) was installed in the actual environment where the residents live, and data was collected and analyzed from 2018 to 2023. As a result of the analysis, we found cases in which different characteristics were observed in the amount of electricity consumed by home appliances depending on the household structure and building location. We believe that the results of this research can be applied to energy conservation measures in the future.