The study under taken at SERIS clearly demonstrates the advantage
of AR-treated glass as used by REC over standard glass types. The
results confirm that w ith higher angles of incidence, higher rates of
reflection from the cell surface can be expected. With sensible system
design however, the higher angles of reflectivity will only be seen w hen
the sun is low in the sky e.g., in the w inter months and at dusk and
dawn, and therefore the strength of the sunlight will be at its weakest.