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All Journal Heca Journal of Applied Sciences Leuser Journal of Environmental Studies
Erkata Yandri
Graduate School of Renewable Energy, Darma Persada University, Jl. Radin Inten 2, Pondok Kelapa, East Jakarta 13450, Indonesia; Center of Renewable Energy Studies, Darma Persada University, Jl. Radin Inten 2, Pondok Kelapa, East Jakarta 13450, Indone
Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences Energy Engineering Environmental Science Health Professions Medicine & Pharmacology Other

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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.  
A Bibliometric and Quantitative Review of Renewable Energy–Powered Mine Dewatering Systems: Trends, Performance, and Gaps Miftahul Fadillah; Erkata Yandri
Leuser Journal of Environmental Studies Vol. 4 No. 1 (2026): April 2026
Publisher : Heca Sentra Analitika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.60084/ljes.v4i1.388

Abstract

Renewable energy integration into mine dewatering systems has gained increasing attention amid rising energy costs, decarbonization pressures, and hydrological variability in mining operations. However, existing studies remain fragmented across hydrogeological modeling, hybrid energy optimization, and environmental assessment, limiting cross-study comparability and system-level integration. This study conducts a structured bibliometric and quantitative synthesis to examine the evolution of research, collaboration patterns, thematic concentration, and methodological gaps in renewable energy–based mine dewatering systems between 2015 and 2025. A PRISMA-based dataset of 43 eligible publications was analyzed using co-authorship networks, keyword co-occurrence mapping, temporal overlay visualization, and composite bibliometric scoring. The results reveal a transition from hydrogeology-focused research toward hybrid renewable integration and energy storage–oriented systems. Publication activity increases significantly after 2020, with a peak in citation impact around that time. Energy storage, renewable integration, and groundwater management emerge as dominant research hotspots, while system-level optimization, stochastic hydrological modeling, real-time control, and long-term validation remain underdeveloped. Quantitative evidence indicates energy savings of approximately 12–25% and carbon emission reductions of 20–40%, although these remain constrained by heterogeneous baselines and deterministic modeling approaches. This study proposes a conceptual analytical framework integrating bibliometric structural analysis, temporal performance evaluation, and gap-driven synthesis to support uncertainty-aware and system-level evaluation of renewable-based mine dewatering systems. The findings guide scalable, integrated dewatering strategies across diverse mining contexts.
Development of a Scoring-Based Renewable Energy Readiness Index for Commercial Buildings: An Integrated Framework Based on Energy Audit Findings Andry Riyanto; Erkata Yandri
Leuser Journal of Environmental Studies Vol. 4 No. 1 (2026): April 2026
Publisher : Heca Sentra Analitika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.60084/ljes.v4i1.405

Abstract

The building sector plays a significant role in global energy consumption and carbon emissions, necessitating the integration of renewable energy systems. However, conventional energy audits primarily focus on technical efficiency and do not provide a structured assessment of a building’s readiness for renewable energy implementation. This study addresses this gap by developing a Renewable Energy Readiness Assessment Framework (RERAF) and its corresponding Renewable Energy Readiness Index (RERI), which integrate energy audit findings with multidimensional readiness factors. The framework comprises nine dimensions—technical, managerial, economic, regulatory, environmental, social, digital, resilience, and institutional—operationalized through an evidence-based scoring approach using a standardized Likert scale (0–4). To maintain methodological neutrality at the initial development stage, all dimensions and indicators are assigned equal weights (equal weighting scheme), thereby avoiding subjective bias in the absence of expert-based validation. The framework was applied to a commercial office building in Indonesia using energy audit data, supporting documents, and operational information. The results show a RERI score of 2.39 (equivalent to 60.00 on a normalized scale), indicating a moderate level of readiness. The analysis reveals a structural imbalance between relatively strong technical readiness and weaker non-technical dimensions, particularly in managerial, economic, digital, and institutional aspects. These findings highlight that technical feasibility alone is insufficient to ensure successful renewable energy adoption. The proposed framework contributes to bridging the gap between energy audit practices and renewable energy readiness assessment by providing a transparent, evidence-based, and reproducible decision-support tool for stakeholders in the building sector.
Structural Feasibility Assessment of an Adjustable-Height Photovoltaic Mounting System Using Conceptual Design and Finite Element Simulation Muhammad Ihsan Nur Faizin; Erkata Yandri
Heca Journal of Applied Sciences Vol. 4 No. 1 (2026): March 2026
Publisher : Heca Sentra Analitika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.60084/hjas.v4i1.383

Abstract

The performance of photovoltaic (PV) systems is influenced not only by module efficiency but also by the flexibility and structural reliability of mounting systems, particularly those allowing height and tilt adjustments to accommodate site-specific and seasonal variations. While automatic tracking systems can increase energy yield, their high cost and mechanical complexity limit widespread adoption, underscoring the need for simpler, more economical alternatives. This study evaluates the structural feasibility of an adjustable-height PV mounting system that improves installation flexibility while maintaining mechanical integrity. A conceptual engineering design approach was employed to develop a modular mounting structure with a mechanical height-adjustment mechanism. Structural performance was assessed using finite element–based static simulations under gravitational loading representative of a commercial bifacial PV module. The evaluation focused on Von Mises stress distribution, total deformation, and safety factor as indicators of mechanical reliability at the conceptual design stage. The results indicate that maximum Von Mises stress remains well below the assumed material yield strength, while total deformation is negligible relative to overall structural dimensions. The calculated safety factor confirms an adequate structural safety margin, indicating that integrating a height adjustment mechanism does not compromise structural stability. The proposed mounting system demonstrates sufficient structural feasibility and mechanical simplicity for early-stage development, offering a practical, adaptable solution for ground-mounted and rooftop PV installations.
Co-Authors Andry Riyanto Hernawan Heriyanto Mei Budi Utami Miftahul Fadillah Muhammad Ihsan Nur Faizin Omrie Ludji