The IEA has discontinued providing data in the Beyond 2020 format (IVT files and through WDS). Data is now available through the .Stat Data Explorer, which also allows users to export data in Excel and CSV formats.
Source: International Energy AgencyLast updated: 5 November 2017
Wallonia supports the energetic audit as well of buildings (either private, public or commercial) through the "Audit Energétique des bâtiments PAE2" for residential buidlings or through the "Audit AMURE ou UREBA" for other types of buildings. The "audit AMURE" also investigates the EE potential of industrial or commercial processes. The audit quality is ensured by technical criterions and the qualification level of accredited auditors.