TECHNOLOGY FOCUS - ELECTRICAL POWER AND ENERGY - Preferred Photovoltaic Module: The photovoltaic module is a concentrating photovoltaic module or a thin film photovoltaic module. The photovoltaic module comprises an acrylic concentrating lens.    TECHNOLOGY FOCUS - POLYMERS - Preferred Composition: The thermoformable backsheet composition is selected from a methacrylic-based polymer, polycarbonate, blend of polycarbonate/methacrylate polymers, a blend of polycarbonate/polyester polymers, and a fiber-reinforced composite (preferably a methacrylic-based polymer). The thermoformable backsheet is white or transparent. The thermoformable backsheet composition has a Tg of greater than or equal to 115 (preferably greater than or equal to 120, especially greater than or equal to 125) degrees C. The methacrylic-based composition is a copolymer comprising methyl methacrylate units (at least 50 wt.%), and at least one monomer unit (3-25 wt.%) selected from methacrylic acid, acrylic acid, itatonic acid, substituted styrenes, alpha methyl styrene, maleic anhydride, isobornyl methacrylate, norbornyl methacrylate, t-butyl methacrylate, cyclohexyl methacrylate, phenyl methacrylate, maleimide, substituted maleimides, glutarimide, methacrylamide, N-isopropylacrylamide, and acrylamide. The thermoformable backsheet composition comprises a blend of a methacrylic polymer or copolymer and a polymer that is miscible/semi-miscible/compatible with the methacrylic polymer or copolymer, where at least one of the blend polymers has a Tg of greater than 110 degrees C. Preferred Layer: The thermoformable backsheet composition layer has a thickness of 0.5-5 (preferably 1.5-2.5) mm. The fluoropolymer layer is 5-150 (preferably 10-50) microns thick. The fluoropolymer layer comprises vinylidene fluoride units (at least 50, preferably 75-95 wt.%) and hexafluoropropylene units (5-40 wt.%). The fluoropolymer is an acrylic modified fluoropolymer. The fluoropolymer layer or thermoplastic composition layer contains titanium dioxide or barium sulfate (BaSO4) particles (0-40 vol.%), based on the volume of pigments and fluoropolymer. The fluoropolymer layer is crosslinkable. The thermoplastic composition layer is crosslinkable, and reactive with multi-functional groups. EXAMPLE - No suitable example is given.