ANNEX

General framework for the calculation of energy performance of buildings (Article 3) 1. The methodology of calculation of energy performances of buildings shall include at least the following aspects: thermal characteristics of the building (shell and internal partitions, etc.). These characteristics may also include air-tightness; heating installation and hot water supply, including their insulation characteristics; air-conditioning installation; ventilation; built-in lighting installation (mainly the non-residential sector); position and orientation of buildings, including outdoor climate; passive solar systems and solar protection; natural ventilation; indoor climatic conditions, including the designed indoor climate. 2. The positive influence of the following aspects shall, where relevant in this calculation, be taken into account: active solar systems and other heating and electricity systems based on renewable energy sources; electricity produced by CHP; district or block heating and cooling systems; natural lighting. 3. For the purpose of this calculation buildings should be adequately classified into categories such as: single-family houses of different types; apartment blocks; offices; education buildings; hospitals; hotels and restaurants; sports facilities; wholesale and retail trade services buildings; other types of energy-consuming buildings.

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Source: EUR-Lex (Cellar) · retrieved 2026-10-30 · Text as adopted (Official Journal); later amendments are not incorporated in this text.