Recently, a global market related to energy efficiency and energy saving technologies is being extended rapidly with the growth of a matter of primary concern about extreme climate change. Especially, in the home network environments where only its functional aspects have been focused on without considering energy consumption, it is urgent to develop new energy-efficient technologies specialized in the home network environments. In this paper, architecture of home energy saving system (HESS) based on energy-awareness and its basic functional requirements are designed and proposed for real-time home energy monitoring service, reducing or cutting off standby power caused by home appliances, and intelligent home energy management service.