GIS-based assessment for the potential of implementation of food-energy-water systems on building rooftops at the urban level

• DOI: 10.1016/j.scitotenv.2021.149963
• Publication Date: 2021-08-28T19:51:34Z
• Authors: A.L. Montealegre; S. García-Pérez; S. Guillén-Lambea; M. Monzón-Chavarrías; J. Sierra-Pérez
• Keywords: Rainwater Harvesting

This research develops a bottom-up procedure to assess the potential of food-energy-water (FEW) systems on rooftops buildings in an urban district Spain considering morphology built environment and obtains accurate assessments production developmental patterns. A multicriteria decision-making technique implemented geographical information system (GIS) was used extract suitable rooftop areas. To implement this method, slope (tilt), aspect (azimuth), shading, solar radiation were calculated using LiDAR (Light Detection Ranging) data building footprints. The FEW implementation analysed at levels. results showed several differences between residential non-residential morphologies. Industrial areas contained highest productivity for systems. 2.51 kg tomatoes/m2, 48 kWh photovoltaic energy/m2, 0.16 l rainwater/m2. Regarding morphologies, more compact tents resulted better performance. Among systems, although water could best benefit from features entire roof surface, achieved by energy. food is less efficient since it requires flat roofs. methodology presented can be applied any city, considered optimal European context development self-production strategies environments.