Breaking the glass cartel
Triple Green, part 6: The days of float glass are numbered. The expenditure involved in its production drives up the price of modules and consumes too much energy. Inexpensive rolled glass, specially developed for solar modules, promises substantial savings in terms of energy, weight and material.
Anyone who talks about photovoltaic energy usually has solar cells in mind: silicon or wafer-thin semiconductor layers separated onto large glass surfaces. Glass appears to be the stepchild of the industry, destined to be a substrate. Yet module manufacturers know that, as Nikolaus Meyer of Sulfurcell points out, “Most of the energy is in glass.” …
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