NOVELTY - A moisture curable adhesive composition comprises a silane functional poly- alpha -olefin polymer; a thermoplastic component having a softening point of at least 120 degrees C and selected from thermoplastic elastomers, and/or thermoplastic polymers; a silane adhesion promoter having a flash point greater than 100 degrees C at atmospheric pressure and a boiling point greater than 100 degrees C at 0.5-15 mmHg; and optionally, a thermoplastic tackifying agent having a softening point greater than 80 degrees C.    USE - In the solar panel assembly for adhering component of solar panel assembly to solar panel; and in the framed solar panel assembly (claimed).    ADVANTAGE - The adhesive composition exhibits moisture vapor transmission rate (MVTR) of no greater than 2 g/m2/day; exhibits good green strength, ability to be handled shortly after application, good durability in a wide range of environmental conditions; provides good protection against moisture, which can adversely affect the efficiency of the solar panel; and provides efficient framing process and enables the manufacture of a framed solar panel assembly.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following:    (1) a solar panel assembly comprising a solar panel; a support; and the moisture curable adhesive composition, where the support is bonded to the solar panel through the adhesive composition;    (2) adhering a component of a solar panel assembly to a solar panel involving contacting at least one of a first component and a second component with the adhesive composition, where the first component comprises a component of the solar panel assembly other than the solar panel, and the second component comprises the solar panel; and allowing the adhesive composition to cure and bond the first component to the second component;    (3) a framed solar panel assembly comprising: a solar panel containing edges; a peripheral frame containing an interior surface; and the moisture curable adhesive/sealant composition disposed between the interior surface of the frame and the edges of the panel, where the panel being bonded to the frame through the adhesive/sealant composition; and    (4) framing (M1) a solar panel involving contacting at least one of the interior surfaces of a frame with a solar panel by means of a moisture curable adhesive/sealant composition; and fixing the frame to the solar panel.