TECHNOLOGY FOCUS - POLYMERS - Preferred Component: The interlayer sheet comprises a poly(vinyl butyral) composition containing 20-26 wt.% triethylene glycol di-2-ethylhexanoate plasticizer, where the interlayer sheet has a pummel value of greater than or equal to 1, and a compressive shear strength of greater than or equal to 1000 psi, and the interlayer sheet provides glass laminates which pass EN 356 P2A test; and which optionally further has characteristic(s) of a compressive shear strength of 1000-2500 psi; a pummel value of 2-7; an E50 value of greater than or equal to 300 psi; an E120 value of 8-15 N/mm2 and a thickness of 20-45 mils. The solar cell laminate further comprises a second encapsulant layer that is laminated to an opposite side of the solar cell layer from encapsulant layer(s). The second encapsulant layer comprises a composition comprising poly(vinyl butyral) having an E120 of 8-15 N/mm2 or a composition comprising a material from ionomers, poly(ethylene-co-vinyl acetate), acoustic poly(vinyl acetal), acoustic poly(vinyl butyral), poly(vinyl butyral), thermoplastic polyurethane, polyvinylchloride, metallocene-catalyzed linear low density polyethylenes, polyolefin block elastomers, ethylene acrylate ester copolymers, acid copolymers, silicone elastomers or epoxy resins. The encapsulant layer is laminated to the light-receiving side of the solar cell layer; or further comprises an incident layer as an outer layer of the laminate on the light-receiving side of the solar cell layer, where the incident layer is made of a transparent material. The transparent material is optionally from glass or fluoropolymers; or further comprises a backing layer as an outer layer of the laminate on the side of the solar cell laminate that is opposite the light-receiving side. The backing layer is optionally made of a sheet or film from glass, plastic sheets or films, and metal sheets or films; or where the solar cells are multi-crystalline solar cells, thin film solar cells, compound semiconductor solar cells, or amorphous silicon solar cells.