The reduction of energy consumption is a key point in building and real estate markets, since it can be attributed to them almost 40% of energy consumption and 20% of polluting emissions.

Energy Certification of buildings are carried out to classify both existing and new buildings, according to their energy performance through an energy consumption classification or label to be associated with each unit.

Attention is paid to limit the power used for construction and / or renovation of the building, as well as to any improvement for energy efficiency in the course of its life cycle, limiting all utilities, from heating to air conditioning, from the production of domestic hot water to lighting, but always supplying optimal values for human well-being. This path takes into account all the parameters given in EC directives: the energy consumed, the use of eco-friendly construction materials, the installation of renewable energy plants and interior comfort. Restag offers a complete analysis, starting with a preliminary study, proceeding with building's energy consumption monitoring and producing a final report on possible optimizations.