The invention relates to an installation (10) for restoring power to equipment, comprising at least one photovoltaic cell (20A-20D; 22A-22B), at least one device for supplying power (12) comprising electrical connection means (14), at least one power storage assembly (18A, 18B), connected on the one hand to at least one of the photovoltaic cells and on the other hand to at least one of the power supply devices to supply it with electrical power, and an inverter (28, 30) interposed between at least one of the power storage assemblies and at least one of the power supply devices, so that the electricity transmitted to the supply device is in the form of alternating current. The invention also relates to a charging module comprising at least one power storage assembly and at least one inverter.