A method for controlling electrical power usage by at least one power consuming device connected—via a telecommunications network—to at least one electrical power generating and/or storing component includes: in a first step, an electrical power consumption profile information is transmitted to or accessed by an electrical power management entity, the electrical power consumption profile information being related to the at least one power consuming device or to a mode of operation thereof; and in a second step, subsequent to the first step, a first electrical power control information and/or a second electrical power control information is transmitted, by the electrical power management entity, to the at least one power consuming device, the first electrical power control information indicating to activate a power consumption mode of operation corresponding to the electrical power consumption profile information transmitted to or accessed by the electrical power management entity.