Guest Editors
Prof. Hussain H. Al-Kayiem
Email: prof.hussain@acaress.org
Affiliation: Academic and Research Services Sdn. Bhd, Perak, 31750, Malaysia; College of Engineering Technologies, University of Hilla, Babylon, 51001, Iraq
Homepage: https://www.acaress.org
Research Interests: sustainability, renewable energies, integrated energy systems

Dr. Ali M. Tukkee
Email: ali.muslim@uokerbala.edu.iq
Affiliation: Department of Petroleum Engineering, University of Kerbala, Karbala, 56001, Iraq
Homepage:
Research Interests: solar energy, thermofluids, thermodynamics

Summary
The current global geopolitical status demonstrates the fragile energy scenario in terms of resources, market, and connectivity. Such a situation is highly influencing the Sustainable Development Goals implementations in developed, developing, and low-income countries. It is no secret that it is called an Energy Crises. The current energy scenario is mainly sourced from fossil fuels, which is unsustainable over the long term due to depletion, negative climate change impacts, negative health impacts, and the challenge of preserving the ecosystems. Deviation from Fossil to clean, renewable resources is combined with huge challenges. Hence, all types of efforts are made to improve the energy systems' efficiencies, reduce carbon emissions, and balance the production cost of energy.
This collection compiles state-of-the-art research and development on energy resources, energy systems, energy processes, energy conversion, energy storage, and all related materials to energy and fuel technologies. The collection accepts mainly papers presenting research results and limited reviews and outlooks of hot energy systems and process topics.
The special issue aims to highlight innovative research and developments that contribute to sustainable energy solutions. Key focus areas include:
·Emerging Energy Resources: Exploration of alternative energy sources, such as solar, wind, geothermal, and bioenergy, emphasizing their potential for cost-effectiveness and environmental impact.
·Innovative Energy Processes: Examination of new technologies and processes that enhance the efficiency of energy production, conversion, and storage, leading to reduced costs and improved sustainability.
·Integrated Energy Systems: Discussion on the integration of various energy systems (e.g., smart grids, microgrids) that promote efficient energy distribution and usage across different sectors.
·Advanced Materials for Energy Applications: Highlighting developments in materials science that support the longevity, efficiency, and affordability of energy technologies, including batteries, photovoltaic cells, and thermal systems.
·Policy and Economic Considerations: Addressing the socio-economic aspects of transitioning to affordable and sustainable energy while ensuring equity and accessibility.
Keywords
energy systems, energy materials, fuel technology, hybrid energy technologies, oil & gas technologies, process control, renewable energies, systems control
Published Papers