A calculation method for the BIPV potential of Swiss façades at LOD2.5 in urban areas: A case from Ticino region

Saretta, Erika and Bonomo, Pierluigi and Frontini, Francesco (2020) A calculation method for the BIPV potential of Swiss façades at LOD2.5 in urban areas: A case from Ticino region. Solar Energy, 195. pp. 150-165. ISSN 0038-092X

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Abstract

urban areas represents a preliminary fundamental step. In fact, by knowing the BIPV potential, urban decision makers can support the integration of PV in the urban environment with appropriate policies to achieve energy transition goals. Specifically, to assess urban BIPV potential of façades, not only solar radiation algorithms are required but also the identification of construction façade characteristics, which significantly affect the real BIPV exploitability. However, current urban BIPV façade cadastres generally do not considered such characteristics since the majority of them are based on 3D city-models at LOD2, meaning that the influence of architectural elements (such as windows, balconies, etc.) is not evaluated. Therefore, this work proposes a calculation method capable to match existing solar radiation analysis at LOD2 with architectural characteristics of façades, through building typological indicators, in order to better estimate the urban BIPV potential of façades, namely defined as LOD2.5, without the need of LOD3 models, which involve important investments at urban level. The results demonstrate that such method can improve the current estimations and it creates the framework to be suitably implemented within city solar planning tools.

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