Introduction
Energy efficiency is the reduction of energy consumption per unit or amount of product without causing a decrease in the standard of living and service quality in buildings, and the quality and quantity of production in industrial enterprises. Energy efficiency policies are one of the areas that need to be handled sensitively, due to the fact that they are directly related to the sustainability of economic growth and social development goals on the one hand, and the key role they play in reducing total greenhouse gas emissions, on the other.