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Optimization of Solar Panel Tilt for Enhanced Electrical Power Output based on Solar Radiation Variations in Cilacap Soolany, Christian; Pangestu, Nur Aji Bangkit Barkah; Waluyo, Didi Zinedine; Sutisna, Setya Permana
Jurnal Rekayasa Mesin Vol. 17 No. 1 (2026)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v17i1.2185

Abstract

The performance of photovoltaic (PV) systems in tropical regions such as Indonesia is strongly influenced by the panel tilt angle, which determines the amount of solar radiation captured. An inappropriate orientation can cause substantial energy losses and reduce overall system efficiency. This study experimentally investigates the optimal tilt angle for a 100 Wp monocrystalline solar panel to maximize power generation in Cilacap, Indonesia (7.6252° S, 109.1134° E). The experiment was conducted in November 2024 under clear sky conditions, with hourly measurements of solar irradiance, and electrical power output at three tilt angles: 30°, 45°, and 60°. The results show that the 30° tilt angle consistently produced the highest performance, reaching a maximum power output of 194.5 W and an efficiency of 19.5% under peak solar irradiance of 1030 W/m² at 11:00 WIB. In contrast, the 60° configuration exhibited the lowest output, particularly during the afternoon period. It is concluded that a fixed tilt angle of 30° provides the most effective configuration for photovoltaic installations in Cilacap, aligning with the solar geometry of tropical regions.
Co-Authors Adelia Putri, Tantri Akbar, Barkah Al Ikhsan, Safaruddin Hidayat Ali Khoirul Hidayat Anton Royanto Ahmad Anugrah, Zamil Arien Heryansyah Aris Haryanto Armansyah Halomoan Tambunan Asari, Muhamad Azis Aulia Putri, Meilani Budi Hartono budi hartono Chairunnisa, Alfiani Darmawan, Dwiki Dodih Dwi Pratiwi, Sinta Edy Hartulistiyoso Fadillah, Muhamad Rizky Fahmi Aldiansyah Fahri, M. Faisal Faizal, Muhamad Nur Farizki Ade Korsa Fauzan, Rifqi Fauzi, Maulana Fitriani Fitriani Fitriyah, Atiqotun Gustiana, Muhamad Halif Hablinur Alkindi Hakim, Muhammad Iqbal Furqonul Hari Kuncoro, Purwoko Hasibuan, Musta'anul Husaini Henggar Jaya, Gigieh Husaini Hasibuan, Musta'anul I Dewa Made Subrata Ibrahim, Maulana Malik Ilyas, Muslim Imam Muftadi Ismaya, Jimmy Jamaludin . Khofifah, Wasfah Komara, Sofyan Akbar Supni Kurniawan Setyo Nugroho Kurniawan, Ainul Septian Kusaeri Maimunah, Maimunah Mamat Rahmat MAMAT RAHMAT Maulana, Erwin Mega Ayu Yusuf, Mega Ayu Mewavianti, Salsabila Safha Muhammad Ilham Fadillah Muhammad Nanang Prayudyanto Muhammad Nuh Lubis Muhammad Ridwan Mutia Pamikatsih Nashrullah, Nuruddin Nasution, Addiena Syahvina Nurbayti, Nabilah Pangestu, Nur Aji Bangkit Barkah Pariatiara, Dicky Nur Prakasa, Anggit Pramono, Gatot Eka Pramono, M.T., Gatot Eka Pramuditha, Anggie Randy Putro, Ady Munanggar Suryo Radite Praeko Agus Setiawan Rakeisya Maulida, Nadia Ramadhani, Tiara Rasiban Rizki, Asep Roy Waluyo Rudi Tri Jaya Rusydi Rusydi Sahid Agustian Hudjimartsu Salundik Saragih, Michael Yudhea SETIAWAN, Ahmad Setyawan, Gigih Bayu Shah, Syed Humayon Siti Khodijah Parinduri Slamet Widodo Soolany, Christian Suhenda, Muhammad Fikri Pratama SUMADI SUMADI Supriatma, Etim Supriyadi, Tachli Sutoyo, Edi Tika Hafzara Siregar Tri Susilo Tri Wahyudi Waldiansyah, Rian Waluyo, Didi Zinedine Yakin, Ahmad Ainul Yusuf, Aditia Maulana