PRAKOSO, BAGAS (2025) ANALISIS SISTEM PLTS ON-GRID BERBASIS PANEL MONOKRISTALIN UNTUK EFISIENSI ENERGI DI SITE 31B PT. MULTIMAS NABATI ASAHAN. S1 thesis, Universitas Mercu Buana Jakarta.
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Abstract
Renewable energy systems are being implemented as a cost-optimization and operational efficiency approach due to the industrial sector's growing demand for electrical energy. One of the strategies used to lessen reliance on traditional electricity is the installation of on-grid solar power plants, or PLTS. This study evaluates the performance of the On-Grid PLTS system at PT Multimas Nabati Asahan, with an installed capacity of 400 kWp, to identify the system’s contribution to energy efficiency and operational cost savings. The research method involves primary and secondary data collection through field observations and simulations using PVgis and PVsys software. The PLTS system comprises 925 monocrystalline solar panels with a capacity of 540 Wp and four inverters of the Solis-(100-125)K-5G-AU type. The evaluation focuses on technical parameters such as Performance Ratio (PR), Peak Sun Hours (PSH), and the electrical power generated. Quantitative analysis is applied to calculate energy savings and the financial impact post-PLTS implementation. According to the test results, the PLTS system produced a maximum of 2230.4 kW of energy in December 2023, and on average, it reduced monthly PLN electricity consumption by 17% to 23%. The system performed in close accordance with IEC 61724 standards, as evidenced by the Performance Ratio of 78.01% and the average Peak Sun Hours of 5.8 hours per day. It is anticipated that this system will pay for itself in two years and four months after successfully reducing operating costs by up to IDR 2.5 million per month. Keywords: Performance Ratio, sustainability, renewable energy, and on-grid PLTS Kebutuhan energi listrik yang terus meningkat dalam sektor industri mendorong implementasi sistem energi terbarukan sebagai langkah optimalisasi biaya dan efisiensi operasional. Pembangkit Listrik Tenaga Surya (PLTS) tipe OnGrid menjadi salah satu solusi yang diadopsi untuk mengurangi ketergantungan terhadap listrik konvensional. Penelitian ini mengevaluasi kinerja sistem PLTS OnGrid di PT Multimas Nabati Asahan dengan kapasitas terpasang 400 kWp, guna mengidentifikasi kontribusi sistem terhadap efisiensi energi dan penghematan biaya operasional. Metode penelitian melibatkan pengumpulan data primer dan sekunder melalui observasi lapangan serta simulasi menggunakan perangkat lunak PVGIS dan PVSYS. Sistem PLTS terdiri dari 925 panel surya tipe monokristalin berkapasitas 540 Wp dan empat inverter tipe Solis-(100-125)K-5G-AU. Evaluasi dilakukan terhadap parameter teknis seperti Performance Ratio (PR), Peak Sun Hours (PSH), dan daya listrik yang dihasilkan. Analisis kuantitatif diterapkan untuk menghitung penghematan energi serta dampak finansial pasca-implementasi PLTS, penelitian menunjukkan bahwa implementasi PLTS On-Grid. Hasil pengujian menunjukkan bahwa sistem PLTS mampu menghasilkan energi tertinggi sebesar 2230,4 kW pada Desember 2024 dengan rata-rata penurunan konsumsi listrik PLN sebesar 17% hingga 23% per bulan. Nilai Performance Ratio yang dicapai sebesar 78,01% dan Peak Sun Hours rata-rata 5,8 jam/hari menunjukkan kinerja sistem yang mendekati standar IEC 61724. Implementasi sistem ini berhasil menurunkan biaya operasional hingga Rp 2,5 juta per bulan dan diproyeksikan mencapai balik modal dalam 2 tahun 4 bulan. Kata Kunci: PLTS On-Grid, efisiensi energi, penghematan biaya, Performance Ratio
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