Bulgaria’s Energy Performance Certificate (EPC) system is at a key stage in its adaptation to the revised Energy Performance of Buildings Directive (EPBD). The analysis was carried out within the framework of the EPBD.wise project identifies persistent challenges related to public perception, data management, the quality of certification processes and the availability of qualified professionals. Although EPCs have been part of the regulatory framework for years, problems remain linked to the complexity of procedures, limited oversight and a lack of public confidence in the results obtained.

To address these challenges, the report proposes a series of measures aimed at strengthening the usefulness and credibility of Energy Performance Certificates while aligning them with the new European requirements.

Key recommendations for Bulgaria:

• Separate the detailed energy audit from the EPC issuance process, incorporating virtual inspections where appropriate and machine-readable digital certificates.
• Establish an independent quality control system to ensure that at least 90% of issued EPCs are valid with a statistical confidence level of 95%, supported by clear enforcement and penalty mechanisms.
• Strengthen auditor training through more accessible and up-to-date programmes focused on new methodologies and best practices.
• Improve the national database to identify the worst-performing buildings and facilitate access to information for property owners, tenants, public authorities, NGOs and academic institutions.
• Simplify the calculation methodology and update the supporting software, drawing on recent experiences developed in neighbouring countries such as Hungary.
• Improve the quality of the recommendations included in EPCs so that they are more specific, practical and linked to renovation support services.
• Develop one-stop shops and communication campaigns tailored to different audiences in order to increase understanding, acceptance and the perceived value of Energy Performance Certificates.