Building’s energy consumption and specially for large buildings is an important component of the total energy consumption. Therefore, improving energy efficiency in buildings has become a global issue today in the fight against climate change. Accordingly, there have been numerous directives and bonuses promoted by the EU in recent years, which set the goal of decarbonisation by 2050. and to locate the status of energy consumption for these buildings different energy monitoring systems have been developed as a result of the fact that an excellent data-based energy management analysis can only be performed through energy monitoring “You can't manage what you can't measure”.