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Suwondo Suwondo
Universitas Riau
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Journal : Bulletin of Electrical Engineering and Informatics

 1 
Optimizing tilt angle of the roof for the best performance ratio of rooftop photovoltaic Dani Ali, Nurhalim; Bahri, Syaiful; Ikhwan Siregar, Yusni; Suwondo, Suwondo; Anhar, Anhar; Lysbetti Marpaung, Noveri; Muhammad, Juandi; Hasyim Rosma, Iswadi
Bulletin of Electrical Engineering and Informatics Vol 14, No 6: December 2025
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/eei.v14i6.11126

Abstract

Rooftop photovoltaic (RPV) systems are becoming increasingly popular as a source of renewable energy. One key factor that significantly affects the performance of RPV systems is the tilt angle of the solar panels. This study aims to determine the optimal tilt angle to maximize electricity production for the RPV system installed on academic building, Department of Electrical Engineering, Faculty of Engineering, University of Riau. The research method used is the PVSyst simulation. The simulation data input was used as daily weather for one year. In this study, variations in roof tilt angles of 5°, 10°, 15°, 20°, and 25° were examined. The results show that the optimal tilt angles for this location are 5° and 10°. At a 5° tilt angle, the RPV can generate 247,128 kWh per year with a performance ratio (PR) of 83%. And then at a 10° tilt angle, the system can generate 248,012 kWh per year with a PR of 82%. Based on the simulation results, other tilt angles also produced higher energy outputs but yielded lower PR values. This study provides practical recommendations for designing RPV systems in regions with similar weather conditions.
Co-Authors ', Darmadi ', Yustina 1Ridwan Manda Putra Abdillah Lbs Abdillah Lbs Adriana Priharwanti Afrianti, Delvi Agus Budiono, Agus Ahmad Kurnain Almasdi Syahza Alwysihah, Hafid Andri Hendrizal Anggraeny, Enny Anhar Anhar Antoni Antoni Anugrahani, Romdha Anugraheni, Fitri Ariani, Dwi Arum Sekar Wulandari Asmura, Jacky Astalini Astalini Atang Sutandi Atika Azharo Atika Azharo Ayu Andira Azizah, Sundus Ghaida Noor Bakce, Riati Bambang Paramudya Besri Nasrul Bintal Amin Bochari - Budi, Idul Fitra Chatarina Umbul Wahyuni Dani Ali, Nurhalim Darmadi Darmadi Ahmad Darmadi Darmadi Darmaji Darmaji Darmawan Purba Delis Lesnawati Destiranda, Eko Deswati Deswati Deswati Deswati Dewi Amina, Nia Ditasari, Kania Elya Febrita Elya Febrita Febrita, Elya Febrita Endang Arisoesilaningsih Evi Suryawati Evi Suryawati Evi Suryawati Suryawati, Evi Suryawati Fadillah , Muhammad Hasnan Faridatunniswah, Ana Fauzi, M. Irsyad Firdaus LN Fitra Suzanti Gita Melisa Yolanda Gita Melisa Yolanda Gun Faisal Gunawan, Fachrul Gustriani, Riah Haryani Haryani Heriwati, S H Hidayat, Dimas Bayu Husna, Rizqa Alfajri I Gusti Bagus Wiksuana Imam Suprayogi Irdika Mansur istiqomah istiqomah Istiqomah Istiqomah Jacky Asmura Jacky Asmura Joleha, Joleha Juandi Juandi Krisyunianto, Andi Kurnia Khairi Khairi, Kurnia Khairi L.N Firdaus L.N Firdaus, L.N Firdaus L.N. Firdaus, L.N. Firdaus Larasati, Amira Lesnawati, Delis Lysbetti Marpaung, Noveri M Yunus Mariani Natalina Maulana, Jaya Meilianti, Dasni Elsa Meliana Meliana Muhammad Amin Muhammad Rizki Musrifin Galib Mustofa, Riyadi Myrna, Rena N, Ariesta Nadia Qotrunnada Nafian, Muhammad Nisa, Nova Khoirun Nizwardi Jalinus Nofrizal Nofrizal Nofrizal Nofrizal Nugrahani, Romdha Nurhasanah Nurmasari, Anita Nursal Nursal, Nursal Oktama R, Dhea Oshi Handayani, Oshi Panindias, A N Pendrice Pendrice Pendrice, Pendrice Perdana, Ramadhani Fajar Permatasari, Ivana Pertiwi, Sri Endah Pratiwi, Dewi Anggi Prilosadoso, B H Pujiono, B Rakhman , Rizali Rama, Ance Gusti Reby Oktarianda Reby Oktarianda Rezalia Eka Putri Ridwan Manda Putra Rika Az Zahrawani Risaundi, Dodi Ristiawati Rosma, Iswadi Hasyim Rosnita Rosnita Rosnita Rosnita Rudy Haryanto Sagita, Romi Salmiah, Ananda Sandria, Jeky Sanjaya, Edi Sari, Dwi Eliana Setiawan, R. Razak Setyowati, Lis Shafa, Dias Silaban, Maya Ismay Siregar , Elisa Weber Siti SITI AISAH Solikin, Muhammad Sri Indarti Sri Wulandari Sri Wulandari Sri Wulandari SRI WULANDARI Sugeng Priyanto, Sugeng Sumardjo Syafi’i, Wan SYAIFUL BAHRI Teguh Irawan Ucin Muksin, Ucin Usman Muhammad Tang Wan Syafii Wardhany, Farydha Sophia Waskito Waskito, Waskito Widodo, Teguh Sugeng Rahayu Winarno, Pujo Yuslim Fauziah Yusni Ikhwan Siregar Yustina Yustina Zakiyyah, Salma zira