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All Journal ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika JURNAL INTEGRASI Journal of Applied Electrical Engineering Brilliance: Research of Artificial Intelligence Jurnal Pengabdian kepada Masyarakat Politeknik Negeri Batam
Fauzun Atabiq
Politeknik Negeri Batam, Indonesia
Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Electrical & Electronics Engineering Engineering Mathematics Mechanical Engineering Other

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Robust Battery Capacity Optimization of Off-Grid PV Systems for Dynamic Load Uncertainty YUSIRAN YUSIRAN; FAUZUN ATABIQ
ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Vol 14, No 3: Published July 2026
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/elkomika.v14i3.320

Abstract

Off-grid solar power systems face fluctuating loads, complicating battery sizing. This study applies Monte Carlo simulation with the bootstrap method to optimize battery capacity for an 8.12 kWp PV system. Data include 113-day aggregated data and four high-resolution (5-minute) load profiles. 5,000 bootstrap scenarios were simulated over a capacity range of 16–48 kWh, targeting a probability of achieving a self sufficiency ratio (SSR) above 80%. Results indicate that a 30 kWh capacity achieves P(SSR > 80%) = 95.1%, meeting the target, while 32 kWh yields a marginal increase (95.8%). Diminishing return analysis shows that beyond 30–32 kWh, each additional 2 kWh improves probability by less than 0.5%. The technically optimal capacity is 30–32 kWh. Validation using high-resolution data confirms that a 16 kWh battery is safe for normal loads (lowest SOC = 27%) but proves insufficient under extreme conditions, with SOC dropping to 14%.
Co-Authors AFRIZAL AFRIZAL Aji Sanjaya Alfy Ariswan Annisa Fyona Ari Wibowo Arie Budiansyah Arif Febriansyah Juwito Arif Febriansyah Juwito Arif Febriansyah Juwito Arif Wahyu Budiarto Candra, Rudi Arif Didi Istardi Fitriyanti Nakul Handri Toar Hasnira Hasnira Ihsan Saputra Ilham Kurnia Ilham, Dirja Nur Irfan Syahri Irwanto Zarma Putra James Siregar Kartika Kartika M. Prihadi Eko M. Syafei Gozali Meida Perwira Antartika Muhammad Agil Wildan Muhammad Andi Nova Muhammad Nurhidayat Muhammad Prihadi Eko Wahyudi Muhammad Ridlo Alfianto Muhammad Syafei Gozali Natalia Parhusip Nugroho Pratomo Ariyanto Nurul Laili Arifin Olfhie Stevani Qoriatul Fitriyah Rahman Hakim Rahman Hakim Ridwan Ridwan Rizky Pratama Hudhajanto Wowo Rossbandrio Yogantara Yogantara Yohanes Suyanto YUSIRAN YUSIRAN