The invention relates to a floating module (1) for producing electricity, comprising: - at least one photovoltaic panel (10) and - a floating armature (20), on which the panel (10) is mounted, characterised in that the photovoltaic panel (10) comprises an upper face and a lower face which are capable of generating electricity by the photovoltaic effect, and in that the floating module (1) further comprises a reflective device (40) which is capable of reflecting light rays towards the lower face (11) of the panel, the reflective device (40) comprising a plurality of floating reflective balls (41) and/or a tank (42) which is attached to the armature (20).