Technical potential of rooftop solar photovoltaic for Ankara: A preliminary study

Kutlu, Elif Ceren
Cities are responsible for over two-thirds of total energy consumption due to the population's externalities. The buildings in the urban areas cause half of this energy consumption. 250 cities have 100% renewable energy target worldwide, including nineteen metropolitans such as London, Los Angeles, Tokyo, and Paris. Besides, these metropolitans aim at zero emissions in new buildings by 2030 and in the existing ones by 2050. By year of 2018, as a developing country, Turkey has a dependency ratio of 73.8 % for overall energy and 51.11% for electricity. In order to overcome problems like population-based pressure in cities and energy security, Turkey requires effective and realistic renewable energy solutions that can combat climate change. As policymakers emphasize, more decentralized solutions as city-wide and municipality-based policies, would provide faster and more effective results to reach renewable energy targets. The renewable energy potential is not the same for all cities. Although there are some rooftop technical solar PV potential studies in country-wide, one of the main motivations of this study is to focus on both building types and roof types to generalize for a city. We develop an accurate vi methodology to determine the rooftop technical PV potential reliable and applicable to every type of roofs. City of Ankara is a convenient starting point for this study due to its relatively high solar irradiance, high number of public buildings and increasing energy demand. In the study, buildings in Ankara divided into three categories: residential, public, and commercial (shopping mall). After the manual selection, the methodology is applied using a well-known Helioscope software program and suitable area constants (access factors) are determined for the three categories. Constant value method was used to generalize the constants to all buildings. The results indicate that the Mono-Si module application is the optimum one for both pitched-roof and flat-roof apartments. Bifacial modules have better results for detached houses, public buildings, and shopping malls, and the amount of energy production might be increased by row-spacing arrangement specifically to the building.


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Citation Formats
E. C. Kutlu, “Technical potential of rooftop solar photovoltaic for Ankara: A preliminary study,” M.S. - Master of Science, Middle East Technical University, 2020.