All of the articles in this proceedings volume have been presented at the International Conference on Sustainable Energy: Toward Energy Transition and Net-Zero Emission (ICoSE) during 6–7 November 2025 in Teaching Industry Learning Center, Sekolah Vokasi, Universitas Gadjah Mada, Yogyakarta. These articles...

Kulai chili (Capsicum annuum L. var. Kulai) is a key horticultural crop in Malaysia, valued for its high yield potential and importance to local cuisine and livelihoods. However, domestic production falls short of national demand, resulting in significant imports and underscoring the need for more sustainable...

Green ammonia offers a zero direct CO₂ emission pathway compared to conventional production, addressing the need for industrial decarbonization. PT Green Ammonia Indonesia (GAI) is developing a 300 metric ton per day plant in North Kalimantan powered by renewable hydroelectric energy from the Kayan River....

Agriculture plays a dual role in climate change, acting both as a source and a potential sink for greenhouse gas emissions. Achieving net zero emissions requires innovative farming practices that not only sustain crop productivity but also enhance carbon sequestration. This study investigates the effects...

Closer relationship between China and countries in Southeast Asia has become important modality for economic relations, especially amid geopolitical turbulent. However, China’s engagement in energy sector presents a contradictory picture, positioning it as both an indispensable enabler of renewable energy...

The Java, Madura, and Bali (JAMALI) power system is critical to Indonesia’s electrical infrastructure. In 2023, reliability issues were identified in the Krian-Gresik subsystem of East Java, particularly at the 500/150 kV Inter-Bus Transformer (IBT), which operated above 60% of its rated capacity, violating...

This paper proposes a Regulatory Readiness Index (RRI) and a Minimum Evidence Package (MEP) to assess the implementability of medium‑scale timber buildings (3–5 stories; 300–3,000 m2) under Indonesia’s SNI/PBG regime and Japan’s Building Standards Law, including the Performance‑Based Fire Safety Verification...

The growth of the human population causes an increase in pollution generated because of the activities carried out. One of the causes is from the vehicle fuel used with the resulting exhaust gases that can cause global warming. From the fuel problem, there is an alternative solution through fuel from...

Industrial activities in Indonesia generate large volumes of hazardous used oil waste. This waste causes environmental pollution and health risks. Conventional treatment systems use centralized facilities and create high transportation costs. These systems also fail to apply circular economy principles....

Integrated farming systems, such as cattle grazing within oil palm plantations, influence both carbon sequestration and methane emission dynamics, while conventional monoculture practices yield different environmental outcomes. This study estimated and compared carbon stocks in young and mature oil palm...

This study aims to explore and explain whether the existing policies under the umbrella of energy transition, stated in the Indonesia energy regulation, led to its stated goals and how they are so. The study is conducted through the lens of the New Institutionalism Theory operationalized through legal-normative,...

This study investigates the autecological determinants influencing the distribution of Vachellia nilotica (L.) P.J.H. Hurter & Mabb., an invasive species in Java and the Lesser Sunda Islands, Indonesia. Using a Species Distribution Modeling (SDM) approach, we aimed to identify the environmental factors...

There is pedestrian bridge on the east side of the City Square to facilitate pedestrian crossing over Amir Mahmud Street. The purpose of this study is (1) to assess the level of service of the pedestrian bridge, (2) to identify appropriate types of pedestrian crossing, and (3) to assess the technical...

Performance improvement of the Pemkot-Jati Serut Intersection is needed to reduce congestion and enabling smoother traffic flow. The objective of this study is to identify the performance of the Pemkot-Jati Serut Intersection and to formulate recommendations for intersection countermeasures. The method...

In orthodox black tea processing, for instance in PTPN VIII Kebun Malabar, the drying process is typically carried out using hot air that produced by absorbing heat from wood pellet combustion. Unfortunately, when the drying process ends, there is still significant amount of residual heat in the heater...

Rising demand for palm oil increases waste production, mainly empty fruit bunches (EFB), which causes environmental pollution. However, EFB can be converted to biochar as a soil amendment. This research investigates how the integration of EFB biochar (EFBB) and Trichoderma biofertilizer (TBF) impacts...

Indonesia’s rising electricity demand and the need to reduce greenhouse gas emissions require strategic long-term energy planning. This study proposes an integrated framework that combines ARIMA–Lasso forecasting with Par-ticle Swarm Optimization (PSO) to project electricity consumption and optimize...

In previous research, the Bellman-Ford algorithm was used to optimize the drinking water distribution pipe network in the management of Perusahaan Umum Daerah Air Minum Tirta Raharja in Cicalengka. The initial pipe network model as input in this algorithm is a connected, undirected, and weighted graph...

The financial evaluation of fuel stations or SPBU in Indonesia reveals that the current profit margin is insufficient to ensure business sustainability as energy distributors. Financial indicators such as the Internal Rate of Return (IRR) and Payback Period (PP) indicate the need for regulatory reform...

In response to climate change and the urgent need to reduce greenhouse gas emissions, industries are under pressure to adopt advanced technologies that enhance operational efficiency while minimizing environmental impact. Industry 4.0 plays a pivotal role in this transition by leveraging technologies...

The sustainability agenda established under the 2030 corporate commitment framework supports the achievement of the Sustainable Development Goals (SDGs) at the national level, particularly in Indonesia. This commitment has directly motivated the authors to undertake research on these challenges by conducting...

The global energy transition demands a holistic view of the externalities associated with critical minerals such as nickel. One of the unavoidable externalities of mining is land clearing, which, paradoxically to the intended use of nickel in emissions reduction technologies, results in additional emissions...

ZSM-5 zeolite was successfully synthesized from natural granite, providing a low-cost and sustainable alternative to conventional chemical precursors. The granite powder was purified, hydrothermally crystallized, and calcined at 200–500 ℃, with the resulting samples characterized by X-ray diffraction...

This study explores the use of a solar power plant and electric motor as an alternative to diesel engines, aiming to save costs and reduce environmental impact. The economic analysis used two methods: calculating the Levelized Cost of Energy (LCOE) and estimating diesel cost savings. A fishing vessel...

Improving condenser performance is essential for sustaining the efficiency of geothermal power plants within Indonesia’s Net Zero Emission roadmap. This study investigates the application of machine learning (ML) models to predict condenser valve openings at PLTP Darajat. Three models were evaluated:...

This study presents the optimization of fly ash utilization in the cement manufacturing process at PT Indocement Tunggal Prakarsa Tbk., Plant 9/10, Cirebon. Fly ash, a non-hazardous by-product from nearby coal-fired power plants, was previously disposed of in landfills, creating environmental issues....

Urban physical expansion poses a threat to environmental sustainability at the local, regional, and global levels. Urbanization will have implications for land conversion, from green land to built-up land. This process will certainly have a direct impact on ecosystem services, one of which is climate...

Reliable operation of geothermal power plants depends on stable turbine performance and early detection of degradation. This study builds a thermodynamics-informed, data-driven workflow in Orange to forecast hourly isentropic turbine efficiency from operational logs. The dataset comprises 1,487 hourly...

This article critically analyses and evaluates Indonesia’s early-retirement plans for coal-fired power plants (CFPPs), focusing at Cirebon 1 and Pelabuhan Ratu power plants. Retiring CFPPs early is not merely a technical exercise but part of the economic and political dynamics driving the energy-transition...

The Global Sumud Flotilla (GSF) 2025 represents a landmark humanitarian initiative aiming to deliver essential aid to Gaza while challenging maritime blockades. This study investigates the concept of resilience through the lens of the Gaza Solidarity Flotilla (GSF), October 2025, emphasizing the intersection...

Sugarcane and other sugar crops serve as vital renewable feedstocks within the global bioeconomy, underscoring the urgent need for sustainable valorization of their lignocellulosic agro-industrial residues. However, conventional first-generation (1G) biorefineries face limitations such as food-versus-fuel...

This study evaluates the cooling energy savings and economic feasibility of double pane and triple pane windows for Indonesia’s Type E office buildings. Type E buildings, which represent government office facilities with high occupancy and long operating hours, were selected because they contribute significantly...