In Portugal, an Energy Performance Certificate (EPC) is a mandatory requirement for both new and existing buildings, whether residential or commercial, when they are sold or rented. The EPC assesses a building's energy efficiency, giving it a rating from A+ (most efficient) to F (least efficient). This certificate helps potential buyers or tenants understand the energy consumption and environmental impact of a property, encouraging more sustainable choices. The certification takes into account factors like insulation, heating and cooling systems, and the building’s overall design, offering recommendations for improvements that can enhance energy efficiency.

Obtaining an EPC is essential for property transactions in Portugal and is typically carried out by a licensed energy performance assessor. The process involves a detailed evaluation of the building’s structure and systems, with the resulting certificate valid for 10 years. In addition to helping reduce energy costs for homeowners, the EPC promotes environmental sustainability by highlighting areas where energy consumption can be minimized. For property owners, having a high energy rating can increase the appeal of a property, as consumers are becoming more conscious of energy efficiency and climate impact.