NOVELTY - Blend composition comprises an ethylene copolymer-1 (10-90 wt.%) and an ethylene copolymer-2 (10-90 wt.%), based on the total weight of the blend composition, where the ethylene copolymer-1 consists essentially of copolymerized units of ethylene, optionally 10-40 wt.% of copolymerized units of a first olefin (I), and 2-30 wt.% of copolymerized units of a second olefin (II), based on the total weight of the ethylene copolymer-1, and the carboxylic acid groups (10-90 wt.%) are neutralized to form carboxylate salts.    USE - The blend composition useful for making a sheet, solar cell module and an extruded sheet (all claimed); and as a crosslinkable encapsulant layer.    ADVANTAGE - The ethylene copolymer-1 and ethylene copolymer-2 reduces the blend composition crystallinity, thus improving the clarity of the encapsulant layer.    DETAILED DESCRIPTION - Blend composition comprises an ethylene copolymer-1 (10-90 wt.%) and an ethylene copolymer-2 (10-90 wt.%), based on the total weight of the blend composition, where the ethylene copolymer-1 consists essentially of copolymerized units of ethylene, optionally 10-40 wt.% of copolymerized units of a first olefin of formula (CH2=C(R1)CO2R2) (I), and 2-30 wt.% of copolymerized units of a second olefin of formula (CH2=C(R3)COOH) (II), based on the total weight of the ethylene copolymer-1, and the carboxylic acid groups (10-90 wt.%) are neutralized to form carboxylate salts. The ethylene copolymer-2 consists essentially of copolymerized units of ethylene, optionally 20-40 wt.% of copolymerized units of the first olefin, and 3-15 wt.% of copolymerized units of a third olefin of formula (CH2=C(R4)-M1) (III), based on the total weight of the ethylene copolymer-2, where none of the first, second or third olefins is a dicarboxylic acid or a di-ester, mono-ester or anhydride of the dicarboxylic acid.    R1, R3 and R4 = H or alkyl;    R2 = alkyl;    M1 = -CO2R5, -CO2R6-R5, -R6-R5, -O-R5 or -R5;    R5 = moiety containing epoxy; and    R6 = alkylene.    INDEPENDENT CLAIMS are also included for:    (1) a product of cross-linking the blend composition, where at least a portion of the carboxylate groups of ethylene copolymer-1 are reacted with at least a portion of the epoxy groups of ethylene copolymer-2 to form cross-links between ethylene copolymer-1 and ethylene copolymer-2;    (2) making a sheet consisting essentially of the blend composition, comprising combining the ethylene copolymer-1 and the ethylene copolymer-2 in a melt at a temperature below 120 degrees C, and forming a sheet from the melt;    (3) a sheet formed by the process;    (4) a solar cell module (10) comprising a solar cell assembly and at least one encapsulant layer, where the at least one encapsulant layer consists essentially of the blend composition or a product of cross-linking the blend composition;    (5) preparing a solar cell module, comprising providing a solar cell assembly and at least one encapsulant layer, where the encapsulant layer consists essentially of the blend composition, the blend composition is uncross-linked, and the encapsulant layer is formed by extrusion from the melt at less than or equal to 120 degrees C, and laminating the assembly at a lamination temperature of greater than or equal to 135 degrees C, to provide a solar cell module where the blend composition is cross-linked;    (6) a solar control module that is the product of the process (P1);    (7) making the blend composition, comprising providing ethylene copolymer-1 and ethylene copolymer-2, and combining ethylene copolymer-1 and ethylene copolymer-2 in a melt at a temperature below 120 degrees C; and    (8) an extruded sheet that is the product of the process, where the extruded sheet have a thickness of 1-120 mils (0.025-3 mm).    DESCRIPTION OF DRAWING(S) - The figure shows a cross-sectional view of a solar cell module.    Solar cell module (10)    Incident layer (11)    Front encapsulant layer (12)    Solar cell assembly (13)    Back encapsulant layer (14)