NOVELTY - Photovoltaic module backsheet produced from at least one rigid thermoplastic polyurethane made by reacting at least one polyisocyanate with at least one diol chain extender, and optionally one or more hydroxyl terminated intermediates.    USE - The photovoltaic module backsheet is useful for producing photovoltaic module (claimed) for converting solar energy or other suitable sources of photons into electricity.    ADVANTAGE - The photovoltaic device may meet and/or exceed any suitable industry standard and/or test, such as for safety, reliability, and performance. It can have no dielectric breakdown or surface tracking when measured according to a dielectric withstand test as defined in IEC 61730 (part 2, 2004 edition) under a minimum of 6000 volts. Optionally, and/or alternatively, the photovoltaic device can have a measured wet insulation resistance times an area of the photovoltaic device at least above 40 megaohms meter squared when measured at 1000 volts as defined in IEC 61215 (2005 edition). According to one embodiment, the photovoltaic device can have a wet insulation resistance tested at 1000 volts of at least 40 megaohms meter squared after aging for about 1000 hours under about 85 degrees C and about 85% relative humidity as defined in IEC 61215 (2005 edition). The photovoltaic device can have a suitable cut resistance and/or puncture resistance. Particularly, the photovoltaic device can pass the Cut Susceptibility Test, MST 12, as defined in IEC 61730 part 2, section 10.3.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for:    (1) an integrated photovoltaic module backsheet and photovoltaic encapsulant, where a photovoltaic encapsulant layer is present on the forward-facing surface of the backsheet; where: (i) the backsheet is produced from at least one rigid thermoplastic polyurethane made by reacting a polyisocyanate with at least one diol chain extender, and optionally one or more hydroxyl terminated intermediates; or (ii) the photovoltaic encapsulant comprises at least one non-rigid thermoplastic polyurethane made by reacting a polyisocyanate with at least one diol chain extender, and one or more hydroxyl terminated polyether intermediates; or (iii) both (i) and (ii);    (2) a photovoltaic module comprising a backsheet produced from at least one rigid thermoplastic polyurethane made by reacting a polyisocyanate with at least one diol chain extender, and optionally one or more hydroxyl terminated intermediates; or a photovoltaic module comprising an integrated photovoltaic module backsheet and photovoltaic encapsulant, where a photovoltaic encapsulant layer is present on the forward-facing surface of the backsheet; and where (i) the backsheet is produced from at least one rigid thermoplastic polyurethane made by reacting a polyisocyanate with at least one diol chain extender, and optionally one or more hydroxyl terminated intermediates; or (ii) the photovoltaic encapsulant comprises at least one non-rigid thermoplastic polyurethane made by reacting a polyisocyanate with at least one diol chain extender, and one or more hydroxyl terminated polyether intermediates; or (iii) both (i) and (ii); or a photovoltaic module comprising an integrated photovoltaic module backsheet and photovoltaic encapsulant comprising: (a) the integrated photovoltaic module backsheet and photovoltaic encapsulant; (b) at least one solar cell; (c) a second encapsulant layer; and (d) a transparent superstrate layer; forming a photovoltaic module;    (3) a method for producing a photovoltaic module backsheet produced from at least one at least one rigid thermoplastic polyurethane made by reacting a polyisocyanate with at least one diol chain extender, and optionally one or more hydroxyl terminated intermediates involving extruding the rigid thermoplastic polyurethane to form the backsheet; and    (4) a method for producing an integrated photovoltaic module backsheet and photovoltaic encapsulant, where a photovoltaic encapsulant layer is present on the forward-facing surface of the backsheet, involving: (i) laminating the photovoltaic encapsulant layer onto the forward-facing surface of the backsheet, or (ii) co-extruding the backsheet and photovoltaic encapsulant resulting in an integrated photovoltaic module backsheet and photovoltaic encapsulant with photovoltaic encapsulant layer present on the forward-facing surface of the backsheet; and where: (i) the backsheet is produced from at least one rigid thermoplastic polyurethane made by reacting a polyisocyanate with at least one diol chain extender, and optionally one or more hydroxyl terminated intermediates; or (ii) the photovoltaic encapsulant comprises at least one non-rigid thermoplastic polyurethane made by reacting a polyisocyanate with at least one diol chain extender, and one or more hydroxyl terminated polyether intermediates; or (iii) both (i) and (ii).