No. Each EPB standard is unambiguous, however allows specific choices to be made at national/regional level for accommodating differences in climate, building tradition, policy and user behaviour.
Example 1: The energy performance depends much upon the outdoor climate (e.g. temperature and solar radiation). Using different climates leads to different results.
Example 2: Each country/region can choose to include or exclude the lighting outside the building (e.g. for car parks) in the EPB assessment. Obviously this will affect the results.
The National Annexes/National Data Sheets are designed to provide information on the choice in a specific country/region. Note that such differences will also have an effect on the national/regional levels for the minimum EP requirements and EP ratings, which may to some extent compensate the differences in the calculated energy performance.
A more detailed discussion on this subject can be found in e.g. CEN ISO/TR 52003-2.
Read more on page on flexibility/national choice
See also FAQs on “National choices” further on.
2019.07.22