NOVELTY - A solar cell system comprises a solar cell (1) on a light-receiving side of which a transparent encapsulant foil (2) is present including a reinforcing layer (3) and two barrier layers. The first barrier layer (4) is positioned above the reinforcing layer and second barrier layer (5) is positioned below the reinforcing layer, determined from the light-receiving side of solar cell system. The reinforcing layer comprises a fiber-reinforced layer which includes fibers with an average length of greater than or equal to 2 cm.    USE - A solar cell system.    ADVANTAGE - The encapsulant foil has good long term resistance against damaging and against the long term influence of environmental conditions. The use of fibers with the specified length leads to a high stiffness and dimensional stability, particularly in the case of woven materials, and leads to less fibrils or other loose fiber ends; thus improving processing and having less dust formation. When an impacting object has damaged the first barrier layer and is stopped by the reinforcing layer, the second harrier layer is still intact and protects the solar cell from environmental substances and provides the required electrical safety. The presence of transparent encapsulant foil comprising reinforcing layer increases the mechanical stability and total strength of the product; decreases the mechanical load on the solar cell itself; and improves the bending properties of foil by bringing the force carrier capacity on both sides of solar cell more in balance, thus improving strength and flexibility properties of the product for production, storage, transport and installation. A reduction of thermal strain difference between highly inelastic and fragile solar cell itself and average expansion of solar cell system reduces the mechanical load change on solar cell itself during temperature changes, thus reducing failure behavior from fatigue and increasing reliability and lifetime of solar cell system.    DETAILED DESCRIPTION - At least one of barrier layers is a layer of fluoropolymer. The fibers in fiber-reinforced layer are glass fibers. INDEPENDENT CLAIMS are included for:    (1) manufacture of solar cell system;    (2) transparent encapsulant foil suitable for the encapsulation of solar cell; and    (3) manufacture of transparent encapsulant foil.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of a solar cell system.    Solar cell (1)    Transparent encapsulant foil (2)    Reinforcing layer (3)    First barrier layer (4)    Second barrier layer (5)