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All Journal Leuser Journal of Environmental Studies Grimsa Journal of Science Engineering and Technology
Omrie Ludji
Graduate School of Renewable Energy, Darma Persada University, Jl. Radin Inten 2, Pondok Kelapa, East Jakarta 13450, Indonesia
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Earth & Planetary Sciences Energy Engineering Environmental Science Medicine & Pharmacology Physics Other

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Integrated Risk Management for Energy Efficiency: A Case Study of Batam’s Manufacturing Sector Ayub Timba; Erkata Yandri; Omrie Ludji; Rendy Sidharta; Clizardo Amaral; Ratna Ariati
Grimsa Journal of Science Engineering and Technology Vol. 3 No. 2 (2025): October 2025
Publisher : Graha Primera Saintifika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61975/gjset.v3i2.87

Abstract

The manufacturing sector in Batam faces increasing pressure from rising energy costs and operational inefficiencies. This study investigates how integrating risk management frameworks, specifically ISO 31000 and FMEA, can enhance energy efficiency in manufacturing operations. A mixed-methods approach was employed, combining quantitative analysis of energy consumption data from selected firms with qualitative insights from interviews with key industrial stakeholders. Baseline energy performance was established, and operational risks were assessed and prioritized. Findings show that outdated machinery, poor maintenance, and unplanned downtimes significantly contributed to energy inefficiency. Implementation of risk-based interventions led to measurable improvements in energy use and cost reduction. Firms adopting the integrated approach reported that 15% energy saving in PT X results in operational cost savings of $ 29.994, and 10% energy saving in PT Y results in operational cost savings of $ 23.952. The Return on Investment (ROI) from implementing an integrated energy risk management strategy is estimated to reach 18 months to 20 months, based on reduced energy consumption and increased productivity. The study underscores the importance of tailored risk-energy frameworks in industrial settings and suggests avenues for future research in broader contexts.
From Waste to Resource: Sustainable Recycling Strategies for Monocrystalline Solar Panels in Indonesia Muhammad Ihsan Nur Faizin; Andry Riyanto; Hernawan Heriyanto; Mei Budi Utami; Omrie Ludji; Erkata Yandri
Leuser Journal of Environmental Studies Vol. 3 No. 2 (2025): October 2025
Publisher : Heca Sentra Analitika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.60084/ljes.v3i2.340

Abstract

The rapid growth of photovoltaic (PV) installations in Indonesia, projected to exceed 8.5 GW by 2030, is expected to generate over 1 million tons of solar panel waste by 2050, highlighting the urgent need for end-of-life (EoL) management. This study evaluates the environmental impacts of monocrystalline PV panels and examines suitable recycling strategies for Indonesia. A Life Cycle Assessment (LCA) framework compares landfill and recycling scenarios using Global Warming Potential (GWP) and Cumulative Energy Demand (CED), supported by sensitivity analysis. Results show that aluminum recycling can reduce GWP by up to 83% and CED by 95% compared to primary production. Mechanical recycling and direct reuse are the most feasible options given local market conditions and technological readiness, while advanced recycling requires additional support. Extending panel lifespan and further improving efficiency further reduce emissions and accelerate carbon payback. The study emphasizes the need for a national PV waste management framework that integrates recycling with circular economic strategies. Policy measures such as Extended Producer Responsibility and fiscal incentives, combined with cross-sector collaboration, are crucial to ensuring a sustainable, low-carbon solar energy transition in Indonesia.  
Co-Authors Andry Riyanto Ayub Timba Clizardo Amaral Erkata Yandri Erkata Yandri Hernawan Heriyanto Mei Budi Utami Muhammad Ihsan Nur Faizin Ratna Ariati Rendy Sidharta