This deliverable summarizes the results of Task 1.1 “EPC generation” included in Work Package 1 (WP1) of the TIMEPAC project. The objective of WP1 is to carry out a comparative study of the elements involved in the development of future scenarios to work with enhanced Energy Performance Certification (EPC), in each of the four identified stages of the EPC data flow: generation, storage, analysis and exploitation. As a result of this study, possible improvements, vulnerabilities, threats, and risks related to an upgrade of already-existing certification schemes are identified. Within WP1, the purpose of Task 1.1 is to objectively analyse the EPC generation procedures in six TIMEPAC countries (Austria, Croatia, Cyprus, Italy, Slovenia and Spain). The scope of the deliverable required a detailed analysis of national frameworks, regulations and the EPC generation tools in all six participating countries in relation to the requirements envisioned in the recast of the Energy Performance of Buildings Directive (EPBD), published in December 2021. The research work focused primarily on identifying good practices as well as potential barriers that need to be overcome in order to implement enhanced EPC schemes. The participants in this study were energy experts in the partner institutions and other institutions dealing with EPC generation. The outcomes of this deliverable provide a clear, cross-country comparison and can be useful for national and regional certification bodies dealing with the rules and regulations of the EPC generation process. Experts from all six Member States clearly indicated that existing models are not able to properly take into account key aspects that need to be considered in a building’s EPC, as envisioned in the EPBD recast. To capture information about the understanding of the EPC generation process from the end-user’s perspective and to better understand the end-user’s needs and expectations, a survey was conducted in all six participating countries. The analysis of the responses revealed that there are many aspects that need to be improved, concerning the quality and value of the energy certificate, in particular for the renovation of buildings. The integration of operational data is crucial for improving the quality, reliability and usability of the EPC. Experiences from the EPC of non-residential buildings in Slovenia clearly show that a dynamic rating based on the consumption data could help to improve the effectiveness of EPC. During the development of this task, contacts were established with expert groups that are working on improving EPCs, including the Concerted Actions (CAs) Energy Efficiency Directive, the CAs Energy Performance of Buildings Directive, the CAs Renewable Energy Sources, the EnR Club (network of energy agencies) and the European Energy Managers (EUREM). These contacts will help disseminate and communicate the activities of the TIMEPAC project.