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28th European Photovoltaic Solar Energy Conference and Exhibition; 3069-3072, In this work we show that deeply textured glass covers can solve an important issue which is the risk of glare due to sunlight reflection on PV modules. We introduce a quantitative measure of glare as the luminance value in the brightest direction and we observe that SGGAlbarino P glass covers allow a reduction of more than 2 orders of magnitude compared to reference smoothly textured cover glasses, from more than one million cd/m² to less than ten thousand cd/m². The physical explanation of this extremely efficient anti-glare property of SGGAlbarino P is to be found in its surface topography which shows both a very broad slope distribution and a randomized aspect.

24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 3359-3362, We compare our steeply textured glasses, two antireflective glasses and standard glasses under outdoor conditions at different sites in Germany, Spain (desert like area) and China (tropical, hot, humid). On textured glasses no dust accumulation higher than on non-textured glasses could be found after 36 months. On AR coated glasses we additionally see a faster drying due to the hyrdophilicity of these types of coatings. So the efficiency gain kept stable over a long period of time. We now show the dependency of output power due to climate impact as dust, rain and irradiation. We conclude that still after 3 years using our new types of glasses for PV modules allows not only increasing the electricity yield of solar modules in laboratory but does also keeps stable over long time period outdoor that means no dust accumulation and easier-to-clean functionality over longer periods due to wind or rain . The efficiency increase for modules with standard multicrystalline cells as installed outdoor lies in the 2% to 8% range and for higher angles of incidence (morning and evening hours) even between 10% and 40%.

23rd European Photovoltaic Solar Energy Conference and Exhibition, 1-5 September 2008, Valencia, Spain; 2808-2810, We compare our steeply textured glasses under outdoor conditions at different sites in Germany and Spain. We find that the gain of SGGALBARINO G and SGGALBARINO P compared to SGGALBARINO T (nontextured glass) under 30° in mean average is between 1% and 13% in Germany and between 1% and 9% in Spain depending on solar cell type and weather conditions. On textured glasses no dust accumulation higher than on non-textured glasses could be found. So the efficiency gain keeps stable over a long period of time.