Increasingly stringent sustainability and decarbonization objectives drive investments in adopting environmentally friendly, low, and zero-carbon fuels. This study presents a comparative framework of green hydrogen, green ammonia, and green methanol production and application in a clear context. By harnessing publicly available data sources, including from the literature, this research delves into the evaluation of green fuels. Building on these insights, this study outlines the production process, application, and strategic pathways to transition into a greener economy by 2050. This envisioned transformation unfolds in three progressive steps: the utilization of green hydrogen, green ammonia, and green methanol as a sustainable fuel source for transport applications; the integration of these green fuels in industries; and the establishment of mechanisms for achieving the net zero. However, this research also reveals the formidable challenges of producing green hydrogen, green ammonia, and green methanol. These challenges encompass technological intricacies, economic barriers, societal considerations, and far-reaching policy implications necessitating collaborative efforts and innovative solutions to successfully develop and deploy green hydrogen, green ammonia, and green methanol. The findings unequivocally demonstrate that renewable energy sources play a pivotal role in enabling the production of these green fuels, positioning the global transition in the landscape of sustainable energy.

Climate change necessitates urgent action to decarbonize the transport sector. Sustainable vehicles represent crucial alternatives to traditional combustion engines. This study comprehensively compares four prominent sustainable vehicle technologies: biofuel-powered vehicles (BPVs), fuel cell vehicles (FCVs), electric vehicles (EVs), and solar vehicles. We examine each technology’s history, development, classification, key components, and operational principles. Furthermore, we assess their sustainability through technical factors, environmental impacts, cost considerations, and policy dimensions. Moreover, the discussion section addresses the challenges and opportunities associated with each technology and assesses their social impact, including public perception and adoption. Each technology offers promise for sustainable transportation but faces unique challenges. Policymakers, industry stakeholders, and researchers must collaborate to address these challenges and accelerate the transition toward a decarbonized transport future. Potential future research areas are identified to guide advancements in sustainable vehicle technologies.

New strategies and market segments considering integrated approaches have emerged as critical components in the energy transition. Agrivoltaics is one approach that has shown a lot of promise for offering advantages in the food-energy-water nexus. The agrivoltaic system involves the installation of photovoltaic panels above agricultural lands to generate electricity while also allowing for crop production. The paper “SWOT and TOWS Matrix Analysis of Agrivoltaic System” comprehensively analyses the potential strengths, weaknesses, opportunities, and threats (SWOT) associated with implementing an agrivoltaic system. This study utilizes a SWOT analysis framework to identify and evaluate the internal and external factors that could impact the implementation and success of the agrivoltaic system. A TOWS matrix analysis is also conducted to formulate strategic recommendations based on the identified SWOT factors. The analysis results reveal that the agrivoltaic system has numerous strengths, including its potential to generate renewable energy, increase crop yield, and provide economic benefits to farmers. However, the system also faces several weaknesses and threats, such as high initial investment costs, land use conflicts, and potential environmental impacts. Based on the TOWS matrix analysis, this study provides strategic recommendations to maximize the potential of the agrivoltaic system while mitigating its weaknesses and threats. These recommendations include adopting a flexible pricing strategy, researching the system’s environmental impact, promoting collaboration between various stakeholders like government agencies, farmers, and energy service companies. Overall, this study provides valuable insights into the potential of agrivoltaic systems and the factors that should be considered when implementing such a system. The findings can help stakeholders make informed decisions and take appropriate actions to ensure the integration of agrivoltaic systems into agricultural practices.

The United Nations’ Sustainable Development Goals (SDGs) highlight the importance of affordable and clean energy sources. Solar energy is a perfect example, being both renewable and abundant. Its popularity shows no signs of slowing down, with solar photovoltaic (PV) panels being the primary technology for converting sunlight into electricity. Advancements are continuously being made to ensure cost-effectiveness, high-performing cells, extended lifespans, and minimal maintenance requirements. This study focuses on identifying suitable locations for implementing solar PV systems at the University Malaysia Pahang Al Sultan Abdullah (UMPSA), Pekan campus including buildings, water bodies, and forest areas. A combined technical and economic analysis is conducted using Helioscope for simulations and the Photovoltaic Geographic Information System (PVGIS) for economic considerations. Helioscope simulation examine case studies for PV installations in forested areas, lakes, and buildings. This approach provides comprehensive estimations of solar photovoltaic potential, annual cost savings, electricity costs, and greenhouse gas emission reductions. Based on land coverage percentages, Floatovoltaics have a large solar PV capacity of 32.3 Megawatts (MW); forest-based photovoltaics (Forestvoltaics) achieve maximum yearly savings of RM 37,268,550; and Building Applied Photovoltaics (BAPV) have the lowest CO emissions and net carbon dioxide reduction compared to other plant sizes. It also clarifies the purpose of using both software tools to achieve a comprehensive understanding of both technical and economic aspects.

Electrical energy has become one of the basic necessities of an individual in today's era. Electricity generation using Photovoltaic (PV) system is considered as one of the cleanest methods of energy generation. Conversion of solar energy to electrical energy is achieved using solar PV panels. Solar panels can be used for stand alone system or in a grid connected system. The maximum energy conversion takes place when there is more amount of direct or beam radiation. So, In order to optimize the energy conversion, tracking of the Sun and the positioning of the solar panel are very important. In this paper, an attempt is made to study the affect of tracking on the energy yield of a rooftop PV system using PVsyst simulation tool. In this paper, the PV system is modeled using mono crystalline, poly crystalline and amorphous silicon panels. Comparison is drawn based on the parameters considered in the study for three different tracking schemes, i.e. no tracking, single axis tracking and double axis tracking.