Photovoltaics; Buildings; Architecture; BIPV; sustainability
Park Jeeyoung, Hengevoss Dirk, Wittkopf Stephen (2019), Industrial Data-Based Life Cycle Assessment of Architecturally Integrated Glass-Glass Photovoltaics, in Buildings
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Martins Ana C., Chapuis Valentin, Virtuani Alessandro, Ballif Christophe (2019), Robust Glass-Free Lightweight Photovoltaic Modules With Improved Resistance to Mechanical Loads and Impact, in IEEE Journal of Photovoltaics
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Martins Ana C., Chapuis Valentin, Virtuani Alessandro, Li Heng-Yu, Perret-Aebi Laure-Emmanuelle, Ballif Christophe (2018), Thermo-mechanical stability of lightweight glass-free photovoltaic modules based on a composite substrate, in Solar Energy Materials and Solar Cells
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Martins Ana C., Chapuis Valentin, Sculati-Meillaud Fanny, Virtuani Alessandro, Ballif Christophe (2018), Light and durable: Composite structures for building-integrated photovoltaic modules, in Progress in Photovoltaics: Research and Applications
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Swiss roofs and façades have a theoretical potential of providing up to one third of the Swiss electricity demand (~ 20 TWh). Because of (i) land scarcity, (ii) need to renew a large fraction of Swiss roofs and façades in the coming decades, (iii) aesthetic criteria, and (iv) the legal frame, a strong fraction of this potential could be exploited through building integrated photovoltaics (BIPV). Theoretically BIPV systems can provide not only a large fraction of Swiss electricity production but they can also lead to low electricity cost (<10 cts/kWh), as integrated PV elements can substitute part of the building envelope, thereby reducing the extra-costs linked to PV.Practically however, only a small fraction of today’s installed PV systems fulfill the criteria of aesthetic and cost effective integration into the buildings. The general reasons or obstacles are treated in detail in the joint project. As key factors though, the low volume and the complexity of most BIPV products, linked to the lack of awareness of possible users and/or the conservative approach (“no risk” on my building), can be mentioned. This is a paradox at a time when “standard” PV components have come to prices, which are in the range of tiles or façade elements.The objectives of this project are thus to:- Understand the reasons of failures/success of most BIPV solutions, in terms of technological choice, cost potential and acceptance and to propose a global new methodology for the development of BIPV products- Analyze, based on evolution of the mainstream PV technology, which kind of BIPV solutions have the potential to reach sufficient acceptance (aesthetics and reliability, ease of installation) and hence sufficient volumes (allowing for low costs), targeting implementation in the archetypical Swiss urban landscape - Demonstrate a novel generation of BIPV products, satisfying manufacturability, durability (reliability), low ecological footprint, with a potential for both providing a substantial part of Swiss electricity and for generating a clean-tech value (e.g. through dedicated elements assembly and manufacturing or export of solutions), and to make detailed case studies (and implementation) at specific representative building categories in Neuchâtel.- Establish sets of recommendation for technological developments, for stakeholders of building sectors and for political/legal aspects