This paper focuses on an approach to build ontology for home energy management domain which is compatible with Suggested Upper Merged Ontology (SUMO). Our starting point in doing so was to study general classifications of home electrical appliances provided by various home appliances vendors and manufacturers. Various vendors and manufacturers use their own arbitrary classification instead of using a single standard classification system for home appliances and there exists no uniformity of appliances specifications among these vendors. Although appliances vendors provide energy efficiency rating of home appliances but they do not provide the detailed specification of the attributes that contributes towards their overall energy consumption. In the absence of these attributes and non existence of a standard ontology it is difficult for reasoning tools to provide a comprehensive comparison of home appliances based on their energy consumption performance and also to provide a comparative ...