The energy quality of a building is a measure of its ability to use energy efficiently while maintaining comfort of use. It determines how much energy is needed for heating, cooling, ventilation, hot water preparation and lighting - in terms of square meter of area per year. The lower the energy requirement, the higher the energy quality of the facility.
The primary document confirming the energy quality of the building is the energy performance certificate, commonly known as the energy certificate. Obtaining it is mandatory when selling, renting and putting the building into use. This document classifies the object on a scale from A+ (highest efficiency) to G (lowest), similar to the energy labels used for household appliances. The Central Register of Energy Performance Certificates shall Ministry of Development and Technology, where you can verify the credentials of the auditors and download the current forms. In practice, energy quality depends on many interrelated factors: the insulation of external partitions, the tightness of the building shell, the efficiency of the installation and the method of obtaining energy.
Already at the stage Design of an individual house The architect makes decisions that decisively shape the future energy quality of the building. The orientation of the solid relative to the sides of the world, the size and arrangement of the glazing, the choice of insulating materials and the functional layout - all these elements affect the energy balance of the object. Changes made after the project is completed are usually costly and often impossible to fully implement.
The requirements for the energy quality of buildings are systematically tightened in Poland. The current regulations introduce a near-zero energy building standard, regulated by Regulation of the Minister of Infrastructure on the technical conditions to be met by buildings - the so-called Technical Conditions (WT). They impose specific limits on the EP indicator, i.e. non-renewable primary energy, the fulfilment of which is verified at the stage of the use permit. These standards apply to both residential and public buildings. At adaptation of the finished project the adapting architect is obliged to check compliance with current requirements - the project taken from the catalog may not meet the current standards.
It is worth noting that Poland implements the EU requirements resulting from European Parliament Directives on the Energy Performance of Buildings (EPBD)which sets the course for the entire European Union. According to its provisions, all new buildings are to achieve a zero-emission standard. Detailed guidelines for the calculation of energy performance are also published Institute of Construction Technology, which is a national research unit in the field of construction.
The tool that allows you to precisely analyze and optimize energy quality at the design stage is technology BIM (Building Information Modeling). The BIM model makes it possible to simulate the energy balance of the entire building - taking into account insolation, thermal bridges, installation characteristics and materials used - before creating even one executive drawing. This makes design decisions based on data, not intuition.
From an investor's perspective, energy quality is not only a matter of compliance, but above all a long-term economic factor. A building with high energy quality generates lower heating and cooling bills throughout its lifetime — often decades. The difference between a basic standard and a passive building can mean savings of the order of several hundred zlotys per month, which translates into tens of thousands of zlotys in the perspective of 20-30 years. Rising energy prices make this calculation increasingly clear in favor of a higher standard. An additional financial boost is provided by subsidy programs such as Clean Air Program run by the National Fund for Environmental Protection and Water Management, which rewards higher energy standards.
The architect's role is to consciously design energy quality as an integral part of the building — not as a requirement to be met at the end of the process, but as a value built into every design decision. A good design is one in which comfort of use, aesthetics and energy efficiency reinforce each other, not mutually exclusive.
