PERANCANGAN DAN STUDI KELAYAKAN PLTS OFF-GRID UNTUK SPKLU DI KANTOR PT.PLN (PERSERO) UP3 PALU MENGGUNAKAN HOMER PRO

Abstract

The number of electric vehicle users in Indonesia continues to increase in line with efforts to reduce greenhouse gas emissions from the transportation sector. However, electric vehicle charging is still largely supplied by electricity generated from fossil fuel-based energy sources. Therefore, the utilization of renewable energy, particularly through Solar Power Plants (SPP), is required. Palu City has significant solar energy potential, with an average solar irradiation of 5.1 kWh/m²/day, making it suitable to support the operation of Electric Vehicle Charging Stations (EVCS). This study aims to design an off-grid solar power system as a zero-emission energy source for an EVCS. The system design and optimization were carried out using HOMER Pro version 3.18.3 to determine the optimal configuration of photovoltaic panels and battery storage, followed by an economic feasibility analysis. The results indicate that the optimal system consists of a 105 kWp solar PV array, 9 MPPT units, and 27 battery units. Economic analysis shows that the project is feasible, with a Net Present Value (NPV) of IDR 868,926,819,51, a Payback Period (PP) of 9.12 years, and a Cost of Energy (COE) of IDR 2,004/kWh over a project lifetime of 25 years.