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STUDY OF DIESEL POWER PLANT REPLACEMENT WITH AN OFF-GRID SOLAR PHOTOVOLTAIC SYSTEM Gustiyadi Fathur Rahmandi; Atok Setiyawan; Hendro Nurhadi
JIPOWER : Journal of Intellectual Power Vol. 2 No. 03 (2025): December 2025 - Maret 2026
Publisher : Yayasan Inspirasi Merah Putih Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63786/jipower.v2i03.63

Abstract

The electrification ratio on the island of Kalimantan has increased significantly from 2014 to 2024, significantly impacting people's lives, especially in Central Kalimantan Province. North Barito Regency is one of the regions that continues to strive to meet the electricity needs of its residents who still lack access to electricity, especially in the 3T (Outermost, Frontier, and Disadvantaged) areas through the Electrification Ratio (RE) program. This vast area presents a unique challenge in ensuring the equitable distribution of electricity to these 3T areas. To meet the National RE target and utilize the various types of power plants currently available in North Barito Regency, as well as to support the transition to New and Renewable Energy (EBT), PLN is connecting the existing electricity grid to the new grid through a network expansion scheme in urban areas. Meanwhile, in the 3T areas, renewable energy is being utilized, such as the construction of solar power plants (PLTS) capable of providing a 24-hour electricity supply. The main obstacles facing PLN (State Electricity Company) in Kalimantan in implementing this RE program include inadequate road access and road conditions for transporting electricity grid infrastructure materials, weather conditions (rain can slow work progress), and permits for 20 kV electricity grid infrastructure from individuals, groups, organizations, or business entities. This research will outline a plan to replace diesel-powered plants (PLTD) with off-grid solar power plants (PLTS) as a renewable energy source, taking into account operating load patterns and the efficiency of the solar power plants, based on the PV panel materials used: monocrystalline and polycrystalline. It is hoped that this study will provide information on the impact of PLTS development on the existing electricity system, enabling PLN to be more efficient in supporting the achievement of a 23% renewable energy mix by 2025.
TECHNO-ECONOMIC ASSESMENT OF REPLACING DIESEL POWER PLANTS WITH OFF-GRID SOLAR PHOTOVOLTAIC SYSTEMS IN REMOTE ELECTRIFIED VILLAGES: A CASE STUDY OF GUNUNG PUREI, INDONESIA Gustiyadi Fathur Rahmandi; Atok Setiyawan; Hendro Nurhadi
Multidiciplinary Output Research For Actual and International Issue (MORFAI) Vol. 6 No. 2 (2026): Multidiciplinary Output Research For Actual and International Issue
Publisher : RADJA PUBLIKA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.18491819

Abstract

The electrification of remote and isolated areas remains a major challenge in Indonesia, particularly in 3T (Outermost, Frontier, and Disadvantaged) regions that still rely on diesel power plants with limited operating hours. This study evaluates the technical and economic feasibility of replacing an existing diesel power plant (PLTD) with an off-grid solar photovoltaic (PV) system integrated with battery energy storage at the Gunung Purei Village Electricity Unit (ULD), Central Kalimantan.The proposed system is designed to transform a 14-hour diesel-based operation into a continuous 24-hour electricity supply. Technical analysis was conducted using PVsyst to assess energy production and performance ratio (PR), while economic feasibility was evaluated using HOMER Pro through indicators such as Net Present Value (NPV), Levelized Cost of Energy (LCOE), Profitability Index (PI), and Discounted Payback Period (DPP). The study compares monocrystalline and polycrystalline PV modules under different battery autonomy scenarios.Results show that the optimal configuration consists of a 588 kWp off-grid solar PV system using 940 monocrystalline PV modules, five 100 kW inverters, a 500 kW power conversion system, and 27 battery sets with a total capacity of 2.94 MWh (one-day autonomy). This configuration achieves a performance ratio of 34.78% and satisfies the annual load demand of 896.19 MWh. From an economic perspective, the system is feasible, yielding a positive NPV of IDR 8.36 billion, a PI of 1.30, and a DPP of 24.77 years.The findings confirm that off-grid solar PV–battery systems using monocrystalline modules provide a technically reliable and economically viable solution for replacing diesel generation in remote electrified villages, while supporting Indonesia’s renewable energy mix target of 23%.