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All Journal Journal of Mechanical Engineering, Science, and Innovation
Arianto, Supri
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Control & Systems Engineering Energy Engineering Mechanical Engineering

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Simulation and Optimization of Hybrid Energy Systems for Green Hydrogen Production in Industrial Settings Arianto, Supri; Rahayu, Yeni Sri; Suwarno, Suwarno
Journal of Mechanical Engineering, Science, and Innovation Vol 5, No 2 (2025): (October)(Issue in Progress)
Publisher : Mechanical Engineering Department - Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jmesi.2025.v5i2.7795

Abstract

The global push toward Net Zero Emissions (NZE) has positioned green hydrogen as a key component in sustainable energy strategies. In Indonesia, the energy sector contributes over 40% of national emissions, prompting the need for increased renewable energy integration. However, green hydrogen production remains limited due to high costs and dependency on fossil-based electricity. This study focuses on a hydrogen production facility located in the Gresik industrial port area, which currently relies 91% on electricity from the national grid. To address this, we propose a hybrid energy system combining photovoltaic (PV) and grid power. The goal is to reduce the Levelized Cost of Energy (LCOE) while increasing the share of renewable energy in hydrogen production.A simulation-based approach was used, employing HOMER Pro software with real industrial operational data as input. Several scenarios were developed by varying PV capacity and daily load demand. The optimal configuration consisting of a 6.179 MWp PV system and a 5,000 kWh/day load resulted in the lowest LCOE of IDR 2,175/kWh, compared to the baseline of IDR 2,783/kWh. The renewable energy share also increased from 9% to 21%.Additionally, performance analysis showed that the actual PV system efficiency was 21%, slightly lower than its theoretical efficiency due to seasonal weather variations. These results indicate that higher PV integration and larger energy loads significantly improve both cost-effectiveness and renewable energy penetration.This study demonstrates a practical, data-driven approach for optimizing green hydrogen production systems in industrial environments.
Modelling and Cost Assessment of Hydrogen Production with Hybrid Energy Sources Rahayu, Yeni Sri; Arianto, Supri; Suwarno, Suwarno
Journal of Mechanical Engineering, Science, and Innovation Vol 5, No 2 (2025): (October)(Issue in Progress)
Publisher : Mechanical Engineering Department - Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jmesi.2025.v5i2.7796

Abstract

Green hydrogen production holds significant potential for supporting Indonesia's clean energy transition towards Net Zero Emissions (NZE) by 2060. However, its current Levelized Cost of Hydrogen (LCOH) of USD 4.3 to USD 8.3 per kilogram makes it less cost-effective than fossil fuel-derived hydrogen. This study aims to analyze the economics of a Hydrogen Plant (H2P) utilizing hybrid energy sources in Gresik. The methodology integrates advanced modeling techniques, including the Levelized Cost of Hydrogen (LCOH) and Net Present Value (NPV) analysis, to quantify production costs and assess long-term profitability. Data for this study was meticulously collected from a Hydrogen Plant in Gresik through historical operational records, technical specifications, projected energy demand, and meteorological data. By systematically comparing five alternative configurations: Grid+Solar PV (50,6 kWp), Grid+Solar PV (100 kWp), Grid+Solar PV (200 kWp), Grid+Solar PV (400 kWp), and Grid+Microhydro (76 kW). Configuration 5 was found to be the most economical under current assumptions, achieving the lowest LCOH of IDR 100.023/kg (USD 6,23/kg) and the highest NPV (IDR 22.935.241.285). This result is align with global decarbonization goals which are projected to be economically competitive at USD 2/kg by 2050.
Co-Authors Rahayu, Yeni Sri Suwarno Suwarno