Meita Rumbayan

Indonesia faces growing pressure to strengthen waste management while expanding renewable energy generation, particularly from high-moisture biomass such as palm oil mill effluent (POME) and the organic fraction of municipal solid waste (OFMSW). Anaerobic digestion technology (ADT) is technically suitable for both feedstocks; however, its deployment depends on broader operational, financial, social, and institutional conditions. This study evaluates ADT readiness for biomass waste-to-energy (BWTE) development in Indonesia using a multistakeholder Japanese Technology Readiness Assessment (J-TRA) framework. The results and discussion are supported by a literature review, secondary data analysis, and interviews with government agencies, industry actors, financiers, non-governmental organizations, and researchers. The results reveal a clear divergence in readiness outcomes. POME-based ADT reaches Technology Readiness Levels (TRLs) of 6–8, supported by a stable and homogeneous feedstock supply, established industrial operations, and corporate incentives to mitigate methane emissions. Key remaining constraints relate to high capital costs for smaller mills, low electricity purchase tariffs, and competing export incentives for untreated POME. In contrast, OFMSW-based ADT remains at TRL 2–4, constrained by inconsistent waste segregation, insufficient operation and maintenance capacity, limited municipal budgets, residential safety concerns, and fragmented governance across waste and energy institutions. Across both cases, readiness is shaped by five interacting forces. The first three are technical: feedstock characteristics, operations and maintenance (O&M) capability, and financial certainty. The remaining two are enabling conditions: social acceptance and institutional coordination. This study concludes that Indonesia’s BWTE transition requires integrated technological, behavioral, and policy interventions, supported by further research on hybrid valorization pathways and context-specific life-cycle and cost analyses.

The purpose of this study is to design and simulate a PV water pumping system at Sam Ratulangi University in Indonesia. The methods employed in this study consist of a literature review, design, and simulation using HOMER (Hybrid Optimization of Multiple Energy Resources) software. The comparison between PV water pumps and dieselpowered water pumps is analysed in terms of net present cost, cost of energy (COE), and emissions to meet the water requirements in the laboratory. The simulation results are based on two design scenarios for a solar photovoltaic water pumping system at a laboratory scale. In Scenario 1, the system has a daily load of 1.5 kWh/day, 0.52 kW PV modules, 4 batteries of 80 Ah each, and a 1 kW inverter. In Scenario 2, the system has a daily pump load of 2.5 kWh/day, 0.87 kW PV modules, 4 batteries of 80 Ah each, and a 1 kW inverter. The results indicate that the utilization of solar energy to power a PV water pumping system performs well and serves as a case study showcasing the use of solar energy. Further studies on the application of PV water pump should be implemented and tested to evaluate the system’s performance.

This feasibility study aims to assess the potential of implementing a micro hydro system in Lalumpe Village, located in North Sulawesi, Indonesia. The study focuses on evaluating the technical and economic aspects of the proposed micro hydro project. Data collection was carried out through field surveys, interviews with local stakeholders, and analysis of available hydrological and topographical data. The technical assessment involved conducting a resource assessment to determine the water availability and potential for harnessing hydroelectric power in the area. The study also examined the village’s energy demand and determined the suitable capacity of the micro hydro system required to meet the community’s needs. Economic analysis included estimating the initial investment costs, operation and maintenance expenses, and potential revenue generation from the sale of excess electricity to the local grid. Financial viability indicators such as payback period and net present value were calculated to assess the economic feasibility of the project.

The background issue of the Student Community Service Creativity Program (PKM-PM) activity in the village of Tulaun is the underdevelopment of this village as a tourist destination despite its abundant tourism potential. The objective of this community service activities is to provide a solution to the challenges faced by partners in developing the tourist village through the construction of supporting facilities, namely independent energy gazebos. The following are the approach strategies implemented in various stages, including: (1) Survey stage (2) Design planning stage (3) Gazebo material procurement stage (4) Gazebo construction stage (5) Independent energy gazebo facility installation stage. The result of the PKM activity is the introduction and installation of a solar-powered lighting system developed using a 50 WP solar panel capacity. A battery with a total capacity of 10 AH is used to store the generated electrical energy and as a source of energy for supplying power to the independent energy gazebo lighting. The implementation result of the PKM activity includes the enhancement of the Tulaun tourist village facilities in Minahasa and the promotion of renewable energy usage in the village

In Indonesia, traditional drying methods for preserving fish face numerous challenges, including a lack of solar heat, rain, and other issues that make the drying process inefficient. This study has the objective s of designing and developing a solar dryer using solar energy photovoltaics to power electricity for supporting the fish drying process. The research method used in this work consist of several stages of Research and Development (R&D), including analysis requirement, model design, prototype construction, and further development. The results of using the fish dryer with solar power can be produced more quickly and efficiently with additional pair DC fan and coil thermal that supply by electricity power from solar energy Photovoltaic (PV). For further development, the solar energy-based food dryers would be tested for other kinds of fish species and agriculture crops in remote coastal communities that face limited access to electricity from the grid.

The purpose of this study is to design and install a solar water pumping system in Bunaken Island of Indonesia. This activity becomes an implementation of solar

Desa wisata artinya desa yang memiliki daya tarik atau potensi khasnya tersendiri. Di era perkembangan teknologi digital, pemanfaatannya sangat penting untuk mengikuti perkembangan zaman. Dengan memanfaatkan teknologi Augmented Reality dalam membangun desa wisata digital yang menggabungkan lingkungan maya dan nyata dihasilkan aplikasi AR Desa Wisata Digital dengan menggunakan metode marker base tracking. Aplikasi dapat memvisualisasikan potensi wisata desa dalam bentuk 3D. Menggunakan metode pengembangan Multimedia Development Life Cycle yang terdiri atas 6 tahap. Hasil evaluasi pengguna menunjukkan bahwa 94% responden menganggap aplikasi menarik dan memberikan manfaat bagi pengguna untuk mengetahui potensi wisata yang ada di desa Lalumpe.

There are some barriers to monitoring and evaluating power plant systems in a remote location; thus, Internet of Things (IoT) enabled systems can be leveraged remotely. This solution is a part of implementing renewable energy-based technology for coastal communities on the small remote island, such as Bunaken Island. Furthermore, this study aims to develop an IoT-based monitoring system of solar energy utilization as a renewable energy source for off-grid solar home systems in remote areas. The methods of this study refer to the stages of the method research and development (R&D) that consist of designing and testing the product of IoT-based solar PV monitoring system. Moreover, this study indicates that the IoT-reported system can report the performance of the remote solar power systems installed in Bunaken Island.