PERKASA, Praditya Yuda Adji and Silviana, Silviana and Saptadi, Singgih (2026) ANALISIS EFISIENSI EKONOMI SOLAR CELL DI INDUSTRI PERTAMBANGAN BATU ANDESIT. Masters thesis, UNIVERSITAS DIPONEGORO.

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Abstract

Bangunan Kantor Quarry XYZ memiliki konsumsi energi listrik sebesar 41,84 kWh per hari atau setara dengan 15.272 kWh per tahun. Ketergantungan terhadap pasokan listrik dari PLN menyebabkan tingginya biaya operasional, sehingga diperlukan alternatif sumber energi yang lebih efisien dan berkelanjutan. Penelitian ini bertujuan untuk menganalisis kelayakan penerapan sistem Pembangkit Listrik Tenaga Surya (PLTS) atap sebagai sumber energi listrik pada bangunan kantor. Simulasi teknis dilakukan menggunakan perangkat lunak Helioscope dengan mempertimbangkan kondisi atap, orientasi modul, serta potensi iradiasi matahari di lokasi penelitian. Analisis kelayakan ekonomi dilakukan menggunakan metode Payback Period, Net Present Value (NPV), dan Profitability Index (PI). Hasil simulasi menunjukkan bahwa luas atap sebesar 474,41 m² dapat dipasang 54 modul surya berkapasitas 550 Wp dengan kapasitas terpasang sebesar 29,70 kWp. Sistem PLTS tersebut mampu menghasilkan energi listrik sebesar 44.505,7 kWh per tahun, lebih besar dibandingkan kebutuhan listrik eksisting kantor. Analisis arus kas menunjukkan saving cost tahunan sebesar Rp 21.537.450, biaya operasi dan pemeliharaan tahunan sebesar Rp 2.544.471, serta arus kas bersih tahunan sebesar Rp 18.992.979. Hasil analisis finansial menghasilkan nilai NPV sebesar Rp 20.076.884, PI sebesar 1,078, dan Discounted Payback Period selama 22,1 tahun. Dari aspek lingkungan, penerapan PLTS berpotensi menurunkan emisi karbon sebesar 12,98 ton CO₂ per tahun atau 259,6 ton CO₂ selama 20 tahun masa operasional.
Kata kunci : Analisis Ekonomi, Helioscope, NPV, Sel Surya

The XYZ Quarry Office Building consumes 41.84 kWh of electricity per day, equivalent to 15,272 kWh per year. Dependence on electricity supplied by PLN results in high operational costs, necessitating more efficient and sustainable alternative energy sources. This study aims to analyze the feasibility of implementing a rooftop solar power system (PLTS) as an electricity source for office buildings. Technical simulations were conducted using Helioscope software, taking into account the roof conditions, module orientation, and solar irradiation potential at the research site. Economic feasibility analysis was conducted using the Payback Period, Net Present Value (NPV), and Profitability Index (PI) methods. The simulation results show that a roof area of 474.41 m² can accommodate 54 solar modules with a capacity of 550 Wp and an installed capacity of 29.70 kWp. The solar power system is capable of generating 44,505.7 kWh of electricity per year, which is greater than the existing electricity needs of the office. Cash flow analysis shows annual cost savings of IDR 21,537,450, annual operating and maintenance costs of IDR 2,544,471, and annual net cash flow of IDR 18,992,979. The financial analysis results show an NPV of IDR 20,076,884, a PI of 1.078, and a Discounted Payback Period of 22.1 years. From an environmental perspective, the implementation of the solar power plant has the potential to reduce carbon emissions by 12.98 tons of CO₂ per year or 259.6 tons of CO₂ over a 20-year operational period.
Keywords: Economic Analysis, Helioscope, NPV, Solar Cell

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