Energy constraints refer to limitations or restrictions in the availability or capacity of energy resources. This research area focuses on understanding and analyzing the challenges and obstacles related to energy production, distribution, and consumption, particularly in the context of increasing global energy demand and finite energy resources. Researchers in this field aim to develop innovative solutions and strategies to overcome these constraints and ensure the efficient and sustainable use of energy. Key areas of study in energy constraints include energy storage technologies, renewable energy sources, energy efficiency, and energy policy.