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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.

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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.