Abstract: A device for managing a surplus of power of a photovoltaic generator that supplies power to electrical appliances connected to the photovoltaic generator, the surplus of power being the difference between the maximum potential electrical power that the photovoltaic generator could produce at a given time taking into account its illumination, and the electrical power actually consumed at that time by the electrical appliances. The device includes a photoelectric control sensor to measure solar light intensity received by the photovoltaic panels and to deduce the maximum potential electrical power; a means for determining the surplus of available power between the value of the maximum potential electrical power and the value of the electrical power actually consumed by the electrical appliances; and a means for managing the surplus of available power, the means being configured to redirect and distribute the surplus of available power between the electrical appliances.