Energy conservation:
Reduction in the amount of energy consumed in a process or system, or by an organization or society, through economy, elimination of waste, and rational use is referred as energy conservation.
OR
It is defined as reducing growth of energy consumption by avoiding unnecessary usages of energy by applying the energy conservation techniques.
OR
It’s the process of reduction in the growth of electrical power utilization and to avoid unnecessary use of electrical power and to increase the efficiency of every machine and material by minimizing the losses.