The world’s first solar roofing membrane with semi-flexible PV modules consisting of crystalline silicon solar cells had its world premiere at the BAU 2017 in Munich. EVALON® Solar cSi is the prototype consistently advanced by alwitra GmbH, Trier, Germany, for a new generation of roof-integrated PV systems with a multi-functional roof waterproofing.
Paralleling EVALON® Solar, EVALON® Solar cSi combines the high-quality synthetic roofing and waterproofing membrane EVALON® with high-performance PV modules. The roofing membrane prototype presented at the BAU integrates crystalline silicon solar cells. EVALON® Solar cSi features a special design, without glass, with a patented glass fibre reinforced duromer core, making the ingenious combination of a proven synthetic roofing membrane and high-performance PV modules flexible and adaptable to the existing roof dimensions.
Another advantage of the glass-free silicon modules is their low weight of only 3.3 kg/m². Thus, EVALON® Solar cSi can be installed even on roofs with a low bearing capacity. In relation to the installed PV modules and capacity, the new multifunctional membrane requires little roof area. Due to its high efficiency and the minimised module spacing, EVALON® Solar cSi needs less than 10 m² of roof area per kWp installed.
EVALON® Solar cSi is 1.55 m wide and 3.49 m long. The silicon solar cell PV modules with ETFE foil yield an output of 450 Wp per membrane. The new multifunctional membrane is easy to install. The topside connecting cables facilitate reliable and quick installation of the roof-integrated PV system.
Due to its dirt-repellent surface, high-quality materials and proven connection between PV modules and roofing membrane, EVALON® Solar cSi offers flexibility, strength and durability. Ideal prerequisites for installation on flat roof areas unused so far.
Almost twenty years of solar experience and more than fifty years of alwitra flat roof expertise constitute a priceless, essential part of this advancement. As manufacturer of the first power-generating roofing membrane EVALON® Solar, the flat roof pioneer has unequalled knowledge and practical experience in both flat roof waterproofing and PV systems.
“Interest in roof-integrated photovoltaics is unabated”, says alwitra owner Joachim Gussner. “The compelling feedback at the premiere of the EVALON® Solar cSi prototype encourages us to make the product available to the market and our clients as soon as possible.”
Having regard to constantly rising electricity costs, personal consumption is of interest for both private and commercial investors. Due to low area requirements of less than 10 m²/kWp, EVALON® Solar cSi is also suitable for small roof areas.
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