It is easy to understand solar panels fixed on any surface are not optimal to collect the sunlight because the sun is moving in the sky all the day. Incidence angles change and optical reflection, optical transmission, photo response vary greatly from sunrise via noon and to sunset. The time around noon is accepted to be the best for PV generation, however even at this short period of time the fixed solar panel faced to South cannot sometimes provide a maximum photo response. Why it is happened? There are many reasons as seasonal variations of solstice, roofs not exactly face to South, panels are fixed and do not track the sun, etc. In spite of that the modern solar PV panels were developed well with highly transparent cover glasses, with antireflective coating or texture, are installed at angles meeting solstice, and nevertheless a half of the daylight period the panel loses light photons very hard. During these poor periods the incident light falls down not only at sliding angles but is affected by polarization splitting resulting in dramatic optical losses at oblique incidence. The solution of General Molded Glass is in properly developed microstructure of the solar glass intended for fixed panel mounts on roofs and facades of buildings.
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