NOVELTY - The assembly (188,190) has a restraining element and a retaining element. A biasing assembly is provided for supporting the restraining element and the retaining element. The biasing element resiliently urges retaining element toward securing element and restraining element toward lower surface of support structure (22), when mounting assembly is mounted on the support structure with restraining element below and facing lower surface of support structure and a securing element supporting a solar panel is positioned between retaining element and upper surface of support structure.    USE - Mounting assembly of solar panel mounting system (claimed), for supporting solar panel relative to support structure.    ADVANTAGE - The vertical flexibility that allows absorption of physical stresses and accommodates tolerance variations during manufacture can be ensured. The sufficient amount of resilience to support and retain the mounted solar panel on the support structure can be facilitated. Since the resilience is provided by biasing element, the lateral flexibility along the elongate slot of the support structure that accommodates thermal expansion and contraction of solar panels in the solar panel assembly can be provided. The absorption of physical stresses produced by ambient conditions can be facilitated and a sufficient amount of force to maintain the general relative positions of solar panels in the solar panel assembly can be provided. As mounting of one or more mounting assemblies to a solar panel assembly is performed and prepared off-site, the rapid on-site installation process requiring few tools and a low level of skill can be facilitated. The simplified process of maintaining of the array of solar panel assemblies can be facilitated.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following:    (1) a solar panel mounting system for mounting solar panel to base;    (2) a solar panel module for mounting to support structure; and    (3) the method of mounting solar panel to support.    DESCRIPTION OF DRAWING(S) - The drawing shows a cross-sectional view of two solar panels mounted on a support structure.    Support structure (22)    Retention device (130)    Array of solar panel assemblies (180)    Solar panel assembly (182,184)    Mounting assemblies (188,190)