TECHNOLOGY FOCUS - POLYMERS - Preferred Components: At least one olefinic polymer is selected from polyisobutylene, polybutene, polyethylene, polypropylene, polybutene, polyisobutene, butyl rubber (polyisobutene-isoprene), styrene block copolymers, and its combinations. At least one olefinic polymer is a polyolefin, fluorinated polymer, or its combination. At least one wax is a polyethylene wax. At least one silane is selected from 3-(2-aminoethyl)-aminopropyltrimethoxysilane, DFDA-5451 NT (silane grafted PE from Dow Chemical), DFDA-5481 NT (moisture curing catalyst from Dow Chemical), amorphous poly alpha olefins (such as, for example, Vestoplast 206, Vestoplast 2412), alkoxy silanes, amino silanes, and its combinations. The antioxidant is selected from Tetrakis (methylene(3,5-di-tert-butylhydroxyhydrocinnanamte)) methane, hindered phenols, hindered amines, thioethers, mercapto compounds, phosphorus esters, benzotriazoles, benzophenones, antiozonants, and its combinations. At least one filler is selected from titanium dioxide, calcium carbonate, fumed silica, carbon black, and its combinations. The opening in the solar module is an opening in either the first substrate or the second substrate. The solar module further comprises an edge seal disposed around the periphery of the solar module between the first substrate and the second substrate to form a moisture vapor barrier to hinder moisture vapor from reaching the at least one photovoltaic cell, where the opening in the solar module is an opening in the edge seal. Preferred Parameters: The at least one wax has a softening/melting point from about 50 degrees C to about 200 degrees C. The potting compound has a moisture vapor transmission rate of less than about 0.3 g/m2 per 24 hours. Preferred Composition: The potting compound further comprises at least one of a desiccant and water scavenger included in an amount from about 0.1% to about 10%, where the at least one of a desiccant and water scavenger is selected from Mississippi lime, molecular sieves, or anhydrous inorganic salts.