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Journal Of Renewable Energy Engineering
Published by Universitas Negeri Gorontalo
ISSN : 29861063     EISSN : 2988554X     DOI : 10.56190
Core Subject : Science, Engineering,
Energy Engineering
Journal Of Renewable Energy Engineering (JREE) is a peer-reviewed journal published twice a year (April and October) by the Vocational Program of the State University of Gorontalo. The Vocational Journal of Science and Technology provides direct open access to its content. The aim of this journal is to provide the expression of ideas, as well as places for knowledge fields that can understand applied science and technology issues and knowledge, with a new space of journals covering the fields of science and technology. applied science and technology research including Mathematics, Physics, Technology, and Informatics
Arjuna Subject : Energi (semua kategori) - Energi Terbarukan, Keberlanjutan dan Lingkungan
Articles 50 Documents
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KONVERSI BIOWASTE MENJADI BIOENERGI DAN BIOPRODUK: TINJAUAN DALAM CIRCULAR BIO ECONOMY Siti Fauziah; Ervan hasan Harun; Jumiati Ilham
Journal Of Renewable Energy Engineering Vol. 4 No. 1 (2026): Journal Of Renewable Energy Engineering (April)
Publisher : Program Vokasi-Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56190/jree.v4i1.67

Abstract

The transition toward low-carbon energy systems has repositioned biowaste as a strategic resource within the circular bioeconomy, offering potential to enhance resource efficiency, reduce greenhouse gas emissions, and generate value-added bioproducts. This review aims to analyze the relationship between biowaste characteristics and the selection of conversion pathways, evaluate recent advances in conversion technologies, and propose strategies for developing biorefineries that are technically, environmentally, and economically feasible. The study employs a systematic literature review approach, covering foundational and recent studies on pretreatment optimization, biological and thermochemical processes, and the integration of life cycle assessment (LCA) and techno-economic analysis (TEA). The synthesis reveals that no single technology is universally optimal for all types of biowaste; conversion efficiency depends on the alignment between feedstock composition, pretreatment methods, process configuration, and desired end-products. Anaerobic digestion remains the most suitable option for wet organic waste, while thermochemical processes such as pyrolysis and gasification are more appropriate for lignocellulosic biomass. Additionally, emerging approaches involving microalgae, nanotechnology, and machine learning contribute to improving system efficiency and product selectivity. In conclusion, the development of sustainable circular biorefineries requires feedstock standardization, data-driven process design, and the integration of LCA and TEA to support large-scale industrial implementation.
INOVASI TEKNOLOGI SURYA GENERASI BARU UNTUK KONVERI ENERGI, INTEGRASI TERMAL, PENGERINGAN, DESALINASI, DAN BANGUNAN CERDAS Sarinah Pakpahan; Fuad Pontoiyo; Jamal Darusalam Giu
Journal Of Renewable Energy Engineering Vol. 4 No. 1 (2026): Journal Of Renewable Energy Engineering (April)
Publisher : Program Vokasi-Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56190/jree.v4i1.68

Abstract

This article presents a comprehensive Systematic Literature Review (SLR) of cutting-edge advancements in solar energy technology, mapping the paradigm shift from single-component efficiency to multi-functional system integration. Utilizing a data corpus from JREE and PLTS comprising high-repute publications from the 2023–2026 period, this study identifies five primary innovation clusters: (1) optimization of photovoltaic (PV) systems and perovskite solar cells; (2) integration of thermal energy storage utilizing Phase Change Materials (PCM); (3) hybrid solar drying applications for the agro-industrial sector; (4) desalination technologies based on interfacial evaporation; and (5) smart building implementation via data-driven control systems. In response to critical reviews, this article strengthens its methodological foundation by providing technical justification for selecting the data corpus, ensuring it is representative of global trends, and mitigating the limitations of abstract-based analysis through an in-depth examination of key studies. Specific focus is placed on the role of Artificial Intelligence (AI), as this review transitions from a descriptive narrative to a systematic analysis of the requirements for interpretable and robust models in system monitoring. The analytical results indicate that the synergy between advanced materials such as nanofluids and metamaterials—and multi-objective optimization algorithms is pivotal to achieving decarbonization targets. Overall, this review provides a roadmap for researchers in developing solar systems that are not only technically efficient but also economically viable and sustainable, supported by a comprehensive reference list that reinforces the reliability of this data synthesis.
INTEGRASI HIDRO, ANGIN, SURYA, DAN PENYIMPANAN ENERGI DALAM SISTEM KELISTRIKAN RENDAH KARBON: TINJAUAN KOMPREHENSIF ATAS FLEKSIBILITAS, OPTIMASI OPERASI, DESAIN TEKNO-EKONOMI, DAN ARAH RISET TERKINI Aswin; Lanto Mohamad Kamil Amali; Burhan Liputo
Journal Of Renewable Energy Engineering Vol. 4 No. 1 (2026): Journal Of Renewable Energy Engineering (April)
Publisher : Program Vokasi-Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56190/jree.v4i1.69

Abstract

The transition to a low-carbon electricity system is driving the strategic role of hydropower, both as a manageable renewable generator and as the backbone of system flexibility to accommodate the intermittency of wind and solar energy. In recent years, the evolution of studies is no longer limited to conventional reservoir operations but has expanded to hybrid hydro–wind–photovoltaic systems, pumped hydro energy storage (PHES), hydro–PV–storage, hydro–hydrogen, and multi-energy configurations integrating compressed air energy storage (CAES) and liquid air energy storage (LAES). This review article synthesizes the literature to map recent developments on four main themes: (1) the role of hydropower flexibility in the integration of variable renewable energy (VRE), (2) modeling and optimization of multi-scale operations, (3) capacity design and techno-economic evaluation of storage technologies, and (4) issues of reliability, safety, ecology, and artificial intelligence (AI) for prediction and control. Recent literature indicates that coordinating hydro with wind, solar, and storage can increase renewable energy utilization, reduce curtailment, improve operational stability, and enhance economic benefits, particularly when operating models incorporate spatio-temporal correlations, hydraulic constraints, market mechanisms, and flexibility requirements. Gaps remain in multi-scale integration, the incorporation of ecological indicators into market optimization, standardization of economic evaluations, and field validation of intelligent control strategies.
PENGARUH KARAKTERISTIK TANAH DAN MATERIAL ELEKTRODA TERHADAP RESISTANSI PEMBUMIAN PADA KONDISI TANAH TROPIS Aditya Kisman; Lanto Mohamad Kamil Amali; Yasin Mohamad; Taufiq Ismail Yusuf
Journal Of Renewable Energy Engineering Vol. 4 No. 1 (2026): Journal Of Renewable Energy Engineering (April)
Publisher : Program Vokasi-Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56190/jree.v4i1.74

Abstract

Keandalan sistem tenaga listrik ditentukan oleh efektivitas sistem pembumian dalam mengalirkan arus gangguan secara aman ke tanah, yang sangat dipengaruhi oleh karakteristik tanah dan material elektroda. Penelitian ini bertujuan menganalisis pengaruh jenis tanah dan material elektroda terhadap nilai resistansi pembumian serta menentukan material yang paling efektif pada kondisi tanah tropis. Penelitian menggunakan pendekatan eksperimen komparatif yang dilaksanakan di empat lokasi di Kabupaten Bone Bolango yang merepresentasikan tanah berbatu, sawah, liat, dan pasir pesisir. Sampel penelitian terdiri atas empat jenis elektroda yaitu tembaga, kuningan, stainless steel, dan besi. Data dikumpulkan melalui pengukuran langsung menggunakan earth tester digital dengan metode fall-of-potential konfigurasi tiga titik pada kondisi geometris yang seragam, kemudian dianalisis secara deskriptif komparatif. Hasil penelitian menunjukkan bahwa nilai resistansi pembumian bervariasi menurut jenis tanah dan material elektroda. Resistansi terendah diperoleh pada elektroda tembaga di tanah pasir pesisir sebesar 0,84 Ω, sedangkan resistansi tertinggi terjadi pada elektroda besi di tanah berbatu sebesar 959 Ω. Tanah dengan kelembapan dan kandungan ion tinggi cenderung menghasilkan resistansi lebih rendah, sedangkan material dengan konduktivitas listrik lebih tinggi menunjukkan kinerja pembumian yang lebih baik. Tembaga secara konsisten memberikan nilai resistansi terendah pada seluruh jenis tanah, diikuti kuningan, stainless steel, dan besi. Secara umum material tembaga direkomendasikan sebagai material paling optimal untuk aplikasi lapangan pada kondisi tanah tropis
ANALISIS HOTSPOT DAN VALIDASI PENGUKURAN THERMOVISI PADA PERALATAN GARDU INDUK TRANSMISI. Rival Septian; Yasin Mohamad; Taufiq Ismail Yusuf; Lanto Mohamad Kamil Amali
Journal Of Renewable Energy Engineering Vol. 4 No. 1 (2026): Journal Of Renewable Energy Engineering (April)
Publisher : Program Vokasi-Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56190/jree.v4i1.75

Abstract

Thermal monitoring of transmission equipment is an essential component in maintaining the reliability, continuity, and efficiency of electric power systems, particularly for substation equipment that operates continuously under high loading and open-environment exposure. This study aims to analyze hotspot phenomena while simultaneously evaluating the reliability of thermovision measurements on Main Transmission Equipment at Bay GT of the Anggrek Substation. The research employed a quantitative descriptive approach through direct field measurements using thermovision under peak-load conditions. The results show that Bay GT 1 exhibited higher thermal characteristics than Bay GT 2, with maximum clamp temperatures of 33.2 °C and 27.6 °C, respectively. Several points in both bays recorded ΔT values greater than 10 °C, indicating the presence of localized thermal anomalies. Emissivity values ranged from 0.47440 to 0.53377 for Bay GT 1 and from 0.51073 to 0.56425 for Bay GT 2, suggesting that the material condition remained relatively stable. Validation results further showed precision levels of 0.6% and 0.5%, with corresponding accuracy values of 98.7% and 91.9%.
ANALISIS KINERJA PEMBANGKIT LISTRIK TENAGA SURYA (PLTS) 2 MWp SUMALATA BERDASARKAN PERFORMANCE RATIO (PR) Julpandi gobel; Romi Djafar; Ervan Hasan Harun; Jamal Darusalam Giu
Journal Of Renewable Energy Engineering Vol. 4 No. 1 (2026): Journal Of Renewable Energy Engineering (April)
Publisher : Program Vokasi-Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56190/jree.v4i1.79

Abstract

The performance of Solar Power Plants (PLTS) in tropical regions is significantly influenced by fluctuations in environmental parameters and system operational effectiveness. This study evaluates the performance of a 2 MWp grid-connected solar PV plant in Sumalata, Gorontalo, utilizing the Performance Ratio (PR) as the primary metric during the seasonal transition period (October–December 2025). Data were harvested from a SCADA monitoring system to analyze the correlation among energy yield, solar irradiation, and performance degradation. The results demonstrate monthly PR values of 75% (October), 74.2% (November), and 64.2% (December), with a mean period efficiency of 71.1%. The significant decline in PR during December is attributed to environmental factors, specifically increased cloud cover and humidity, as well as technical constraints such as module soiling accumulation and inverter operational disturbances. These findings underscore that, while the average performance remains within the operational benchmark (70%), adaptive Operation and Maintenance (O&M) strategies tailored to the humid tropical climate are essential to ensure long-term stability in system efficiency.
PEMETAAN PENELITIAN ENERGI TERBARUKAN MENGGUNAKAN METODE BIBLIOMETRIK: ANALISIS KEYWORD, AUTHOR, DAN TREN PUBLIKASI Bintang; Putri Najiha; Putri Bintang Lubis
Journal Of Renewable Energy Engineering Vol. 4 No. 1 (2026): Journal Of Renewable Energy Engineering (April)
Publisher : Program Vokasi-Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56190/jree.v4i1.80

Abstract

The exponential growth in renewable energy publications makes it difficult to understand the research landscape without a systematic approach. This study applies bibliometric analysis to 17,617 Scopus documents from 2023 to 2026 using VOSviewer and Bibliometrik to map publication trends, thematic structures, and scientific collaboration networks. Results show a ±137% surge in publications from 2023 to 2025, driven by the global energy crisis and commitments from COP27/28. Five major clusters were identified, covering power systems, policy–investment–carbon, green hydrogen, energy market optimization, and storage materials, with hydrogen and artificial intelligence emerging as research frontiers. The collaboration network is dominated by intra-national patterns within China, with limited cross-regional connectivity. This study also identifies four major research gaps: energy justice, Global South collaboration, AI–hydrogen integration, and island-based ocean energy, underscoring the need for a more integrative and contextual research approach.
BIBLIOMETRIC ANALYSIS OF THE INTEGRATION OF RENEWABLE ENERGY IN LEAN MANUFACTURING PRODUCTION SYSTEMS Putri Bintang Lubis; Putri Najiha; Bintang
Journal Of Renewable Energy Engineering Vol. 4 No. 1 (2026): Journal Of Renewable Energy Engineering (April)
Publisher : Program Vokasi-Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56190/jree.v4i1.81

Abstract

This study presents a bibliometric analysis of the integration of renewable energy into lean manufacturing production systems using Scopus-indexed data from 2022 to 2026. The objective is to map research trends, identify dominant thematic clusters, and examine existing research gaps at the intersection of operational efficiency and energy sustainability. A total of over 1,400 documents were analyzed using VOSviewer to construct keyword co-occurrence networks and thematic maps. The findings reveal four major research clusters: (1) lean manufacturing and sustainable development, (2) Industry 4.0 and digital twins, (3) production control and optimization, and (4) hydrogen production and renewable energy systems. Despite stable publication trends in both lean manufacturing and renewable energy domains, the results indicate weak structural connections between the two fields, suggesting limited integrative research. This study highlights a significant research gap in combining lean operational principles with renewable energy applications, particularly in real-world manufacturing contexts and developing countries. It contributes by providing a comprehensive bibliometric mapping and proposing future research directions that integrate lean efficiency with sustainable energy metrics within interdisciplinary production system frameworks.  
EVALUASI FAKTOR KERUSAKAN MODUL SURYA DAN DAMPAKNYA TERHADAP KINERJA SISTEM PLTS 2 MWP SUMALATA GORONTALO Rehan Mukmin; Yunita Djamalu; Arifin Matoka; Aswin
Journal Of Renewable Energy Engineering Vol. 4 No. 1 (2026): Journal Of Renewable Energy Engineering (April)
Publisher : Program Vokasi-Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56190/jree.v4i1.82

Abstract

The performance of a solar power plant (SPP) is significantly influenced by the condition of the solar modules, which are the primary components in the energy conversion process. Damage to the modules can lead to a decrease in efficiency and disrupt the stability of the power generation system. This study aims to identify the types and characteristics of solar module damage, analyze the dominant contributing factors, and evaluate their impact on the performance of the 2 MWp Sumalata SPP system in North Gorontalo. The method used is quantitative descriptive analysis with a direct field inspection approach, supported by operational data in the form of the number of damaged modules and inverter power output. The research findings indicate that PV module damage is primarily caused by burnt modules and a combination of cracked and burnt modules, as well as the occurrence of hotspots due to environmental and technical factors. Based on the inspection summary for the January–December 2025 period, a total of 507 damaged modules were recorded, comprising 238 modules on Transformer 1 and 269 modules on Transformer 2; indications of performance degradation were also found in the form of low open-circuit voltage (Voc) values in some modules. The impact of the damage is evident in the reduction of inverter output power and the potential decrease in daily energy production. On December 2, 2025, with an irradiance of 6.80 kWh/m², inverter number 41, with 22 damaged modules, produced 17.942 kW of power, which was lower than inverters 35–40, which were in the range of 18.4–20.74 kW. These results indicate that solar panel damage directly impacts the overall performance of the PV system, particularly in terms of generation efficiency and power output stability.
ANALISIS PERFORMA DAN EVALUASI CAPACITY FACTOR PADA PEMBANGKIT LISTRIK TENAGA SURYA (PLTS) 2 MWp SUMALATA GORONTALO Gabriel Stella Sinay; Mohammad Lanto Kamil Amali; Fuad Pontoiyo; Sarinah Pakpahan
Journal Of Renewable Energy Engineering Vol. 4 No. 1 (2026): Journal Of Renewable Energy Engineering (April)
Publisher : Program Vokasi-Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56190/jree.v4i1.84

Abstract

Solar Power Plants (PLTs) are among the main pillars of Indonesia's renewable energy transition, especially in regions with high solar irradiation potential, such as Gorontalo. This study aims to evaluate the operational performance of the 2 MWp PLTS in Sumalata by calculating the Capacity Factor (CF). The data used includes monthly energy production and solar irradiation during the 2024 operational period. The research method is descriptive-quantitative, calculating the ratio between actual energy output and maximum installed capacity. The results showed that the highest energy production occurred in September at 247,640 kWh, while the lowest was in December at 124,200 kWh. The average Capacity Factor obtained was 15.03%. This value is significantly influenced by weather fluctuations, cloud cover, and solar panel cleanliness (soiling). Although the CF value is within the standard range for PLTS in tropical regions, optimization in preventive maintenance and regular panel cleaning is required to improve system efficiency. This study concludes that the Sumalata PLTS makes a vital contribution to the regional energy mix, but its efficiency remains highly dependent on local meteorological conditions.

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