Using Gis and Photogrammetry for Assessing Solar Photovoltaic Potential on Flat Roofs in Urban Area Case of the City of Ben Guerir / Morocco

Abstract

<p><strong>Abstract.</strong> Renewable energy sources are at the forefront of political discussions around the world because of the scarcity of fossil fuels and climate change caused by the accumulation of greenhouse gases. By 2030, Morocco will cover 52% of these energy needs through renewable energies, in order to preserve the environment (COP 22). This paper aims to estimate the potential of photovoltaic solar energy from flat roofs in the city of Ben Guerir, Morocco using remote sensing and GIS data. To achieve this goal, vector orthophoto resulting from the photogrammetric restitution acquired in 2015 were used to generate a 3D model (DSM). The annual solar irradiation is calculated by the analyser of the solar tool. Each roof is calculated based on algorithms for the most common solar panel technologies (mono-si and poly-si). The applicability of this methodology has been demonstrated in the urban area of Benguerir, Morocco, and can be widespread in any other region of the world. The results obtained for a total roofing surface of 135 Ha, i.e. more than 345 Gwh of electricity annually generate. For an average roof of 60 m<sup>2</sup> that could supply 5 to 6 households; A planned investment between 118,218 and 167,296 DH, and an annual maintenance charge of 2%. This study may be an initial assessment of solar potential in the city, which can be used to support the management decision regarding investment in the urban solar system.</p>

Assessment of Solar Photovoltaic Potential of Building Rooftops Using Photogrammetry and GIS

“…(Table 2.) represents the detailed calculation of solar PV potential of each building (23 buildings) evaluated for both Monocrystalline and Polycrystalline technologies along with their respective total usable area for solar panel installation, and the table 2 links (Figures 4. and Source: (Saadaoui et al, 2019) The results show the highest PV potential values from Monocrystalline than Polycrystalline panels. The table also shows the suitability of each building for solar panel placement.…”

“…The amount of power that solar panels can generate is determined by two technological parameters in addition to solar radiation (conversion efficiency, performance ratio). Based on the two current technologies on the market:high performance (Monocrystalline) and standard yield (Polycrystalline), it is possible to calculate the entire yearly electricity production (Saadaoui et al, 2019). The electric power production potential (E) is expressed as:…”

Evaluation Model of Distributed Photovoltaic Utilization in Urban Built-Up Area

“…Bodis et al assessed the potential PV power generation for the entire European Union, estimating 680 TWh per year [17]. In terms of assessment calculation methods, accurate quantitative studies incorporating GIS systems have also been used by an increasing number of scholars for assessing urban PV potential [18][19][20][21]. Alaa Alhamwi et al proposed the establishment of a GIS open-source platform for optimizing urban distributed energy systems [22].…”

Trends and Evolution of the GIS-Based Photovoltaic Potential Calculation

“…First, installation and maintenance require the definition of buffer areas located on the edges, which should be removed from the theoretically useful area. It is generally accepted that this buffer is equal to 1 m, a value considered in [12,75,78]. In one study [75], this constraint is combined with the requirement of a minimum surface for panel installation, equal to 5 m 2 .…”