Estimation of photovoltaic energy potential in the Universitas Gadjah Mada area
DOI:
https://doi.org/10.61511/ineq.v2i1.2025.2045Keywords:
digital surface model, electrical energy, problematicAbstract
Background: One of alternative energy that has great potential dan is environmentally friendly is solar energy or photovoltaic. Sunlight can be converted in to electrical energy using photovoltaic panel (PV panel). Indonesia has a great potential to utilize this energy, because it is located around the equator line which causes Indonesian territory to be exposed by sunlight for 10-12 hours every day. This study aims to determine the potential of photovoltaic energy in Univeristas Gadjah Mada area, as well as the suitable location and dimension for the utilization of photovoltaic energy. Methods: The amount of sunlight received on a surface on earth can be estimated using spatial analysis methods. Findings: The slope dan aspect of a surface can be information to estimate the value of radiation received on that surface. The information needed can be obtained from a digital surface model (DSM) which is a digital model of the surface of the earth. The object that being analyzed is the roof of the building. Furthermore, it can be estimated the electrical energy potentials that is generated by multiplying solar radiation, area, and the coefficient of efficiency and performance ratio of the PV panels used. Conclusion: It can be seen the estimated electricity is 13,224,850 MWH in 59,893 m² area a year on 357 rooftops in Universitas Gadjah Mada area. 7,730,132 MWH of them are produced in 18 faculty areas. Based on electricity usage data at the 18 faculties, photovoltaic energy is estimated to save energy by 71%. This value is also proportional to the cost that can be saved to meet electricity needs. Novelty/Originality of the Study: The uniqueness of this study lies in its accurate spatial estimation of photovoltaic (PV) energy potential using a Digital Surface Model (DSM) to analyze the suitability of roofs across Universitas Gadjah Mada (UGM).
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