energieprestatieniveau

Energieprestatieniveau is a term used to describe the level of energy performance of a building, system, or appliance, indicating how efficiently energy is used and how much energy is required to deliver its services. It is used in policy, regulation, and market transactions to compare and improve efficiency. In buildings, the energieprestatieniveau is commonly expressed through an energy performance certificate (EPC) or energy label, which assigns a rating on a scale (for example A to G) or a numerical score. The rating reflects expected or actual energy consumption based on standardized calculations or measured data.

Calculation inputs include the thermal properties of the building envelope (insulation, airtightness, glazing), heating and cooling equipment efficiency, ventilation, hot water generation, and typical occupancy and operating patterns. Climate data and reference conditions defined by national or regional standards are used to ensure comparability. Methods range from simplified calculation tools to detailed dynamic simulations.

Applications of the energieprestatieniveau include informing buyers, renters, and investors; guiding renovation decisions; and supporting compliance with building codes and energy-related incentives. Limitations include sensitivity to assumptions about behavior and climate, as well as the possibility that post-assessment changes to the building or usage can alter actual performance. Regular updates or re-certifications may be required after major renovations.

Related concepts include energy efficiency, primary energy factor, energy intensity, EPC, and energielabel.