Lightweight photovoltaic module and photovoltaic system

The utility model discloses a light photovoltaic module and a photovoltaic system. The light photovoltaic module comprises a composite front plate, a first packaging film layer, a battery layer, a second packaging film layer and a composite rear plate which are stacked in sequence, the composite front plate and the battery layer are bonded and fixed through a first packaging film layer; the battery layer and the composite rear plate are bonded and fixed through a second packaging film layer; the composite front plate comprises a first transparent plate layer and a tempered glass layer which are arranged in a stacked mode, one side of the tempered glass layer is connected with the first packaging film layer, the other side of the tempered glass layer is connected with the first transparent plate layer, and the thickness of the tempered glass layer is smaller than or equal to 2.0 mm. Therefore, the weight of the photovoltaic module can be effectively reduced, the water vapor permeability of the composite front