The invention relates to a control unit for an electrical generation/consumption system including generation sources (200) and consumption units (300) connected by a distribution network (100), including a control center (400) which transmits, to controllable consumption units (310) and to controllable generation sources (210), modulation orders based on warning information received from an external operator (500), on information relating to the potential of the respective suppression of units (310), and on information relating to the respective potential of generation or of a decrease in generation of sources (210), or of the suppression of the latter, at each unit (310), a module (312) which transmits, to the center (400), data updated in real time representing the potential modulation suppression of the unit (310), and at the sources (210), a module (212) which transmits, to the control center (400), data which is updated in real time and which is representative of the potential of generation or of the decrease in the generation of the source (210), or of the suppression of the latter.