What is the difference between a National Annex and a National Data Sheet?

Each country/region can make a specific set of choices, according to the template of Annex A of a given EPB standard, for the assessment of the energy performance. Or different sets, depending on the application.

Once this template of Annex A is filled in with the national data and choices, it can be published.

• If it is published by the National Standardization Body, as Annex to the standard, it is called a National Annex. This is the preferred option (most transparent and accessible).
• If it is published by a national/regional building authority, it is called a National Data Sheet.

So for the user it is only a matter of where to find it.
The National Annex can be found as Annex to the EPB standard and the National Data Sheet can be found e.g. embedded in regulations. There is no difference in the type of content, or template used.

Read more on national-annexes
Read more in EC Recommendation 1

2019.07.22