Multicriteria roof sorting for the integration of photovoltaic systems in urban environments

Thebault, Martin (University Savoie Mont Blanc, Annecy-le-Vieux, France) ; Clivillé, Vincent (University Savoie Mont Blanc, Annecy-le-Vieux, France) ; Berrah, Lamia (University Savoie Mont Blanc, Annecy-le-Vieux, France) ; Desthieux, Gilles (School of Engineering, Architecture and Landscape (hepia), HES-SO // University of Applied Sciences Western Switzerland)

This work deals with the sorting of the suitability of the roofs for the integration of PV systems, implementable as a GIS (Geographical Information System). Such sorting can provide relevant information to help and guide urban actors further develop solar energy, and therefore contribute to the acceleration of the deployment of this source of energy in cities. Three scenarios of sorting are considered: the energetic, the economic and the multicriteria sorting. The energetic and economic sorting scenarios are actually similar to the great majority of the currently proposed sorting in publicly available solar GIS tools (solar cadastre), which consider only one attribute such as the solar irradiation or the payback period. Knowing the limits of these sorting scenarios, a multicriteria approach is adopted and takes into account more impactful attributes in the urban actors’ choices. The ELECTRE TRI methodology is used for this sorting problem. Different decisional criteria related to energy, economy, historic buildings and heritage, the structure and superstructure states of the roof are identified and detailed. The method is then applied to a set of alternatives (roofs) in a district of Geneva. The sorting results show that the proposed multicriteria scenario better integrates the complexity of the urban environment and provides a more relevant information regarding the suitability of the roofs for PV integration.

Article Type:
Ingénierie et Architecture
HEPIA - Genève
inPACT - Institut du Paysage, d'Architecture, de la Construction et du Territoire
Published in:
Sustainable Cities and Society
Numeration (vol. no.):
2020, vol. 60, article no. 102259
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 Record created 2021-03-19, last modified 2021-03-22

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