than the cavity wall includes rounded projections 39 on opposing cavity walls portions fig1 shows a portion of the solar panel mounting system 10 that includes an alternative base and fastening system showing the solar panel 14 coupled to the end clamp 12 fig1 shows a portion of the solar panel mounting system 10 with an alternative base and fastening system showing the solar panels 14 coupled to the mid clamp 13 fig1 shows an exploded perspective view of the solar panel mounting system 10 of fig1 fig1 shows a top view of the solar panel mounting system 10 of fig1 including the panel mount top surface 25 panel mount base 20 the alignment projection 26 and the position of the grounding pins 27 in relation to the alignment projection 26 as previously described fig1 also shows hollow caps 40 fig1 shows a sectional view of fig1 in fig1 16 the hollow cap 40 helps to secure the panel mount 11 the raised portion 34 of the flashing plate 15 in fig1 and 19 the hollow cap 40 engages a hollow projection 41 extending upward from the surface of the base plate 18 the interior of the hollow cap 40 and the exterior of the hollow projection 41 have complementary threading.