Energy consumption is the utilization of energy resources or transformed energy for various purposes, quantifying the amount of energy used by individuals, systems, processes, or entities over a specific period. As a research concept and academic field, it investigates the sources, types, patterns, efficiency, and total quantity of energy used across different sectors (e.g., industrial, residential, transportation, commercial), examining the processes of energy conversion, distribution, and end-use, and analyzing the associated economic, environmental, and social implications. Its significance lies in informing energy policy, promoting resource sustainability, mitigating climate change, and understanding economic and societal development.