In this report, QUALICHeCK gives an overview of the building energy performance related quality and compliance situation in 9 focus countries: Austria, Belgium, Cyprus, Estonia, France, Greece, Romania, Spain and Sweden.
A review of 31 existing studies dealing with measured performance, reliability of input data, quality of the works and compliance frameworks shows in many of the above areas problematic situations. The 10 field studies conducted in the framework of QUALICHeCK, additionally show important issues in meeting the regulatory requirements. For example:
- In Austria, 20% of the EPC input data had not been updated between design and completion, resulting in errors in Space Heating Demand assessments in the range of 5-28%.
- In Estonia, 68% of the buildings investigated did not comply with the regulatory summer comfort requirement.
- In Greece, the percentages of non-compliance based on building design documentation for the U-values of external insulation and for the solar collector’s area are 56% and 73% respectively.
- In Romania, recalculation of the EPCs lead to a change in energy class in almost 40% of the sample for the total energy use.
- In Sweden, the non-compliance rate based on the availability of the EPC alone was found to be 56% on a sample of 100 new houses.
Generally, the data collected and analysed in the framework of QUALICHeCK confirms and quantifies problems with the quality of EPC input data, the quality of building works, as well as with compliance frameworks. However, despite these non-compliance issues, QUALICHeCK also reveals positive ongoing developments in many Member States. Ambitious and sophisticated systems are available in certain Member States (e.g. Austria, Estonia, Sweden), and though they have longer learning curves and are more difficult to implement in practice, they seem capable to lead substantial performance improvements.