A method for managing in an Energy Management System (EMS) includes receiving, from a mobile terminal, a user command for at least one target smart appliance controlled by the EMS, determining, upon receiving the user command, determining whether the at least one target smart appliance includes at least one power-controlled smart appliance, wherein each power-controlled smart appliance operates in a power control mode, generating, upon a determination that there is at least one power-controlled target smart appliance, a notice message for informing the mobile terminal that the at least one power-controlled target smart appliance operates in the power control mode, and sending the notice message to the mobile terminal, and determining, upon receiving a response message to the sent notice message, whether to continue the power control mode of the at least one power-controlled smart appliance according to selection information included in the response message.