From an environmental perspective, the Energy Saving Certificates contribute significantly to the fight against climate change by reducing CO2 emissions. Furthermore, from an economic standpoint, energy efficiency improvements translate into lower operating costs, which improves long-term profitability. Additionally, in a marketplace that is increasingly aware of the environmental impact of corporate activities,Energy Saving Certificates  serve as a hallmark that enhances competitiveness and strengthens the company's reputation.

Globally, there are several energy performance certificates that are used to evaluate and classify the sustainability and efficiency of buildings. Some of the most prominent are:

• LEED (Leadership in Energy and Environmental Design): This rating system is widely used around the world. It evaluates the sustainability and environmental impact of buildings, considering aspects such as the efficient use of energy, water, materials and the quality of the indoor environment.
• BREEAM (Building Research Establishment Environmental Assessment Method): This is another widely recognized assessment system. It focuses on sustainability and energy efficiency, considering aspects such as management, land use, occupant health and well-being.

• DGNB System: Developed by the German Sustainable Building Council, this system assesses the sustainability of buildings in terms of energy efficiency, environmental quality, resource use and social aspects.
   

  These certificates help to promote more sustainable building practices and reduce the environmental impact of buildings worldwide. Each has its own characteristics and evaluation criteria, but all share the common goal of promoting energy efficiency and sustainability in construction.